Was buying a home
easier back then?

What does this comparison show about Australian housing affordability?

Buying a home has three different hurdles: the price, saving a deposit, and paying the mortgage. A low interest rate can reduce repayments without making the deposit smaller. This explorer separates those questions instead of assigning one score to an entire generation.

In this national comparison, a home represents 3.27 times annual household income in 2000 and 5.75 times in 2025. The prices, income definition and deposit assumptions below explain that comparison; they are not the finances of a typical first-home buyer.

The 2000 price is reconstructed from the historical index. The 2025 income uses a projected household count. Household income is the national-accounts mean after tax and before interest—not a wage, median household income or first-home-buyer income. The price includes the deposit and loan principal once only.

Source: Rate Challenge compilation of the BIS residential property price index and ABS national dwelling values, with the household-income method below. Figures are rounded for display. The data edition ends in December 2025.

Where do the home-price figures come from?

From 2012 to 2025, the price measure uses the supplied ABS national mean dwelling-value estimates, averaged across the four quarters of each year. It covers dwellings, not only detached houses. A mean is not the same as a median or the price of a typical first home.

For 1980–2011, the project uses movements in the BIS nominal residential-property-price index for eight Australian cities, linked to the full-year 2012 national mean of $490,300. These earlier dollar figures are reconstructed benchmarks, rather than directly observed national mean prices. The city index and national dwelling measure are not identical in coverage.

Recorded older prices are also available for individual cities and regions. Those are local medians and cannot simply replace an Australia-wide mean. Explore recorded local prices ↓

The chart does not follow the same home through time or isolate changes in dwelling quality and composition. Dollar amounts are nominal—the money of the period—not inflation-adjusted purchasing power.

Sources: ABS dwelling values and BIS price history via FRED. The later ABS release is used for historical revisions only; this edition contains no observed 2026 prices.

Explore recorded prices by city and region

These local price records let you look beyond the national estimate. Choose houses or units, then compare places. They are published local medians—not the national mean used in the affordability calculations above.

What do approvals, starts and completed homes measure?

Approvals count dwelling units given permission to build. Starts count dwellings where construction began. Completions count finished dwellings. These are separate stages—not the same group of homes progressing from one stage to the next within that year.

Annual approvals add 12 monthly source counts, and annual starts and completions add all four quarters. No partial year is multiplied up to look complete. Approvals and starts use the archived seasonally adjusted source series. Completion counts retain the project’s separate quarterly series. The full original metadata for that completion history has not been independently recaptured in this edition.

Homes under construction is the number of new residential dwellings still being built at the end of the December quarter. It is a stock at one point in time. Summing four quarterly snapshots would count unfinished homes repeatedly, so the explorer does not do that. This new-residential count is narrower than the ABS total including some conversions and other dwelling categories.

These numbers are not net additions after demolitions or a direct measure of a housing shortage. Approvals, completion timing, household size, vacant dwellings and local demand all affect how much housing is available.

Sources and definitions: Australian Bureau of Statistics · Australian Bureau of Statistics. Historical numerical observations are reused from the original Rate Challenge ABS-source extract; no new 2026 observation is included.

How are building costs, house size and material prices measured?

Average house build cost is the published Australian average construction cost of completed new detached houses. It excludes land and landscaping. It is not a median sale price, current builder quote, or land-and-house package. Averages can change because the size, quality and mix of completed homes change—not only because materials or labour became more expensive.

The completed-house tables cover 2007–08 to 2024–25 financial years. The point marked 2025 therefore means July 2024–June 2025. The same time labels stay attached to average floor area and the indicative cost-per-square-metre calculation. Other lines mainly use calendar years or December snapshots; no missing half-year figures are invented to align them.

Build cost per square metre divides the published average cost by the published average floor area. It is a ratio of averages, not an average of individual project quotations. Building-material prices uses the ABS material-input index for house construction; it is an index, not the whole build cost. Building prices (all buildings) is a separate broader output-price index that includes non-residential as well as residential construction. It is deliberately not called a house-only index.

Both recovered price indexes cover 2013–2025 and are averaged across four quarters. Their source base is 2011–12 = 100. Growth view can rebase them again to the first shared positive year, but it never creates a dollar price from an index.

Sources: Master Builders Association of NSW / ABS · Australian Bureau of Statistics · Australian Bureau of Statistics. The cost and floor-area values are transcribed from the published national tables. Older uncollected cost and index periods remain blank.

What does “household income” mean here?

It is an estimated mean annual income per household built from the ABS national accounts, not a single wage, median salary or the income of the average first-home buyer. It includes income beyond wages and does not follow one family's earnings, employment or retirement through time.

The project starts with household gross disposable income and adds back dwelling, consumer and unincorporated-business interest payable before dividing by the estimated number of households. Income tax is already taken into account; it is not deducted a second time. Using disposable income before interest avoids reducing the income denominator by the financing expense being compared.

Mean household income = annual household disposable income before interest ÷ number of households

The household counts use published estimates from different releases and interpolation between selected estimates. Counts for 2022–2025 are projections. The main view withholds 1980–1990 income figures because the earlier household counts are less certain. “Include 1980–1990 estimates” shows the separate rough annual estimates, with labels; it does not turn them into observed facts or fill missing lifetime-income results.

Sources: ABS national accounts, household income account, ABS household estimates and projections, and the RBA's discussion of dwelling-price-to-income measures. The numerical inputs are the project's retained research exports, not a live feed from these links.

How are the survey mean and median household incomes compiled?

The two survey-income measures use gross income before income tax from the ABS Survey of Income and Housing (SIH). They include household income beyond wages. The median is the middle household: half have more and half have less. The mean is the average and can be pulled upwards by high incomes. Neither is adjusted for household size (“equivalised”), and neither describes only first-home buyers.

We transcribed the mean and median gross-income columns in the published ABS Household Income and Wealth, 2019–20 web table. It contains 11 survey periods from 2000–01 to 2019–20. Its weekly figures are expressed in 2019–20 dollars, so they cannot be placed unchanged alongside the explorer’s historical dollar home prices.

To show approximate dollars of each period, we reverse that inflation adjustment using the ratio of financial-year CPI averages, then multiply by 52. The CPI average uses the September and December quarters of the first year and the March and June quarters of the ending year. The 2019–20 CPI mean is 115.65 in the retained 2011–12 = 100 series.

Annual income equivalent = published weekly income in 2019–20 dollars × CPI for the survey financial year ÷ CPI for 2019–20 × 52

The source weekly values and CPI inputs are rounded published figures. The result is therefore a derived nominal estimate, marked with ≈ for the converted periods—not a fresh capture of an exact nominal SIH workbook. Multiplying by 52 creates an annual equivalent; it does not reproduce the survey’s separately collected annual-income variable or a household’s actual income receipts for a year.

For example, the 2019–20 median gross weekly household income is $1,786. Multiplying by 52 gives a $92,872 annual equivalent. No CPI conversion is needed in that base period. The original source weekly amount, conversion, period and sources remain in the selected chart CSV.

Only survey years are populated. 2020 on the axis means 2019–20. Dotted lines connect survey points as a visual guide; they do not fill missing years. There are no SIH projections after 2019–20 in this edition. Changes in income measurement, including the 2003–04 improvements and the 2007–08 income standards change, affect comparisons; the income line is interrupted at 2007–08. Sampling variability means small changes need not be statistically significant.

The main Household income line remains the national-accounts mean after tax and before interest. The survey measures do not replace it, recalibrate it or change its mortgage scenarios. Their different coverage and tax basis explain why they should not be read as competing estimates of exactly the same quantity.

Sources: ABS Household Income and Wealth, Graph 1 · ABS CPI, December 2020, Table 3 · SIH income definitions · Survey changes over time.

What do the surveyed owner and renter housing-cost figures mean?

Why keep survey results as well as the loan model? The model asks what a new 80% mortgage would cost under the same rules in each year. The survey describes existing mortgage owners or private renters, with different balances and circumstances, using their own before-tax incomes. Both are useful, but one cannot be substituted for the other. The survey does not tell us how long buyers took to save a deposit.

These two measures retain the ABS-published housing costs as a proportion of gross household income for owners with a mortgage and households renting from a private landlord. There are twelve survey-period results from 1999–00 to 2019–20. Each ratio relates to its own tenure group, not to the income of all Australian households.

For these statistics, housing costs include rent, general and water rates, and mortgage or unsecured-loan payments where the original purpose was to buy, add to or alter the occupied dwelling. The owner measure therefore includes qualifying principal and interest, not interest alone. It does not include every cost of ownership, such as all maintenance and insurance. Rent Assistance is included in income rather than deducted from housing costs.

The 2019–20 published ratios are 15.5% for mortgage owners and 20.2% for private renters. These are not the percentages of households in housing stress, median rents, a first-home-buyer result or a new-loan repayment estimate. Existing owners have different loan balances, incomes and stages of repayment from the standardised new-purchase mortgage in the main illustration.

We do not recalculate these percentages using the national-accounts income, infer mortgage interest rates from them, or fill unsurveyed years. Compare them as reported survey context alongside—not as a replacement for—the modelled repayment share.

Sources: ABS Housing Occupancy and Costs, Graph 3 · SIH housing-cost definitions.

How are full-time earnings and “one wage” comparisons compiled?

Full-time earnings · reference uses before-tax full-time adult ordinary-time earnings for persons, multiplied by 52 to express an annual equivalent. It is not a median salary, a household’s combined income, take-home pay, or a worker’s actual annual receipts. Ordinary-time earnings and total earnings including overtime are different measures.

For 1981–82, we use the late-year observations in Table 3 of the supplied ABS Average Weekly Earnings, Australia, 1941–1990, catalogue 6350.0 (printed page 6; PDF page 8). The 1981 late-year figure is $278.50 per week and the 1982 figure is $324.80. These are the persons/full-time-adult/ordinary-time column, not the male-only total-earnings series.

For 1983–2025, we select one annual reference from the Commonwealth Superannuation Corporation’s published ABS earnings table: the entry with a period ending on 31 October of that year. CSC describes its rate as based on ABS trend full-time adult ordinary-time earnings. We retain the original period label and publication date, including releases in the following year; the period label is not treated as a measured full-year average.

This produces a source-linked, published-vintage late-year reference, not a freshly downloaded single-vintage ABS original or annual-average series. The chart marks the 1983 source change. Full-time earnings before 1981 are not fabricated by substituting the older male-only figures. ABS also cautions that its historical linked earnings series is more suited to trends than definitive levels at every earlier date.

Annual earnings equivalent = weekly reference × 52
Home price vs one full-time wage = national dwelling-price benchmark ÷ annual earnings equivalent

The price-to-one-wage comparison combines the existing annual dwelling benchmark with a late-year earnings reference. Pre-2012 prices remain estimated. It does not assume that one wage is every household’s actual income, deduct tax or living expenses, or establish a borrowing limit. Changes in the employee mix can affect average earnings even without a uniform pay rise.

Sources: ABS historical earnings publication 6350.0 · CSC published ABS earnings references · ABS November 2025 earnings check · ABS earnings methodology.

How were the SIH comparison workbooks and data-item list used?

The supplied SIH–ASNA income comparison and SIH–ASNA wealth comparison workbooks reconcile survey estimates with the Australian System of National Accounts. Their population income, asset and debt amounts are aggregate totals—often in billions of dollars—not average household incomes or sale prices. Their scope adjustments, including non-cash items where applicable, are not applied as an unexplained correction factor to this explorer.

Data Comparability between SIH and other ABS Sources helps explain survey coverage and household characteristics, including comparison with other ABS collections. SIH 2019–20 Data Item List identifies variables and definitions; it is a catalogue, not a file of household responses. The historical earnings PDF supplies the early earnings reference described above.

These files are retained in the internal source package, with their original names and hashes. The added survey chart values come from the separately identified published ABS tables. We have not presented the aggregate wealth workbook as a new house-price series or claimed to have extracted first-home-buyer deposits from the variable list.

Survey scope, measurement and timing differ from national accounts. Retaining both well-named comparisons gives useful perspectives without confusing their definitions. The model’s fixed 20% deposit and standard repayment terms remain deliberate assumptions, not measured averages inferred from these workbooks.

Sources: ABS SIH and national-accounts comparison · ABS guide downloads and data-item list.

How do population and migration fit the housing comparison?

Population is estimated resident population at 31 December, rounded to 100 people. People added each year is the change between consecutive December levels. Population growth is the percentage change over the year to December. These are national population measures, not the number of households or homes required.

The archived project export retained exact annual population-growth ratios, rather than its original level column. The explorer restores the earlier rounded levels by reversing that calculation from the published ABS December 2025 anchor. No guessed growth rate is used. Every recovered level lands on the original 100-person rounding; the 2004–2025 levels also reconcile to the separately published ABS annual growth balances within 50 people. The earlier years retain the archived ratios rather than a fresh original-workbook recapture.

Net overseas migration sums all four archived quarterly observations. The source chart rounded each quarter to 0.1 thousand people. A negative value is valid: it means departures exceeded arrivals on the population-residency measure. It is not a count of all border crossings, and changes in statistical methods can affect comparisons over decades.

Homes completed per 1,000 people divides annual completions by the December population and multiplies by 1,000. It helps compare home building in a smaller or larger Australia. It does not account for demolitions, household size, vacant homes or where demand is located, so it is not an exact housing-shortage calculation.

Sources: Australian Bureau of Statistics · Australian Bureau of Statistics, with archived project ratios and counts retained as described above.

Why are there different mortgage rates—and how far back do they go?

Advertised benchmarks describe published reference rates. They are not the average rate borrowers obtained after discounts. New loan averages describe newly funded loans; existing loan averages describe loans already on lenders' books. The modern averages here are for owner-occupier principal-and-interest loans and include fixed and variable loans. Owner-occupier means a borrower living in the property; principal-and-interest repayments pay back the borrowed amount as well as interest.

Standard variable rate

Advertised benchmark. Monthly and complete-year coverage: 1980–2025.

Discounted variable rate

Advertised benchmark. Monthly: June 2004–December 2025. Complete years: 2005–2025.

3-year fixed rate

Advertised benchmark. Monthly: September 1990–December 2025. Complete years: 1991–2025. Three years is the fixed-rate period, not the full repayment term.

New loan average

Newly funded owner-occupier principal-and-interest loans. Monthly: July 2019–December 2025. Complete years: 2020–2025.

Existing loan average

Outstanding owner-occupier principal-and-interest loans. Monthly: July 2019–December 2025. Complete years: 2020–2025.

Older variable loans (sample)

Existing owner-occupier variable principal-and-interest loans in the securitisation sample. Monthly: June 2015–January 2020. Complete years: 2016–2019. Not the whole mortgage market.

The older sample is not joined to the modern new-loan or existing-loan average: their coverage differs. We have not established an equivalent observed new-loan average back to 1980. No line on this page is the RBA cash rate or a fees-inclusive comparison rate.

All rates use one captured RBA version dated 7 September 2026, restricted to observations through December 2025. The discounted benchmark has a documented reporting change in June 2019. Its monthly line is interrupted there, and the annual 2019 value is shown separately. The reporting effect is not quantified, so no adjustment is invented.

Sources: RBA tables F5 and F6, F5 reporting-break notes, the new and existing rate definitions and the older sample's coverage.

Why do monthly charts and yearly comparisons sometimes differ?

Monthly charts are available when all selected measures are mortgage rates. Adding home prices, income or another annual measure returns the chart to yearly values. Annual prices are not repeated as invented monthly observations.

A yearly rate is the arithmetic mean of all 12 stored monthly observations. Incomplete years stay blank. For the paid-rate series, those monthly observations are already published weighted averages; the annual figure is not reweighted by the value of lending in each month.

The hover box and Explore panel follow the selected chart frequency. The side-by-side year table uses complete-year values even when the chart is monthly. In a monthly chart, A–D comparison markers are placed at December. The older and modern paid-rate series overlap monthly in 2019–2020, but do not share a complete annual year, so they cannot form a common-base annual growth comparison.

How are repayments and lifetime mortgage interest worked out?

Starting monthly repayments use the selected year's complete annual-average rate, the original 80% loan and the chosen 5, 10, 15, 20, 25, 30 or 35-year repayment term. Starting-rate choices are the standard-variable benchmark, discounted-variable benchmark and new-loan average, within their available years.

Monthly repayment = L × r ÷ [1 − (1 + r)⁻ⁿ]
L is the loan; r is the annual percentage rate ÷ 1,200; n is the term in months.
At a zero rate, repayment = L ÷ n.

Starting repayments as a share of income equal 12 monthly payments divided by annual household income. This is not a lender's serviceability test or an observed measure of borrower stress.

Total mortgage interest uses a separate monthly model, starting in January at the purchase year's annual price benchmark. Each month, interest is applied to the remaining balance and the payment is recalculated over the remaining term. This means the starting rate is not held unchanged for the entire mortgage.

The “Historical rates + recent averages” path uses the standard benchmark through June 2019, followed by the existing owner-occupier principal-and-interest average from July 2019. “Standard variable rates only” keeps the advertised benchmark throughout. These are reference paths, not individual loan contracts. The discounted rate, three-year fixed rate and older sample are not silently substituted into a lifetime path. No extra repayments, offsets, redraws or refinancing costs are included.

“Home price + interest” adds the original purchase price and modelled mortgage interest. The price already contains both the deposit and borrowed principal; they are not added twice. “Interest on $100,000” scales interest to an initial $100,000 loan, removing the effect of different home prices. These totals are nominal amounts, not inflation-adjusted or discounted values.

Which results use future assumptions or uncertain historical estimates?

The historical cutoff is 31 December 2025. A mortgage that continues beyond that date needs assumed rates for later months. The combined historical path uses 5.50% after 2025; the standard-variable-only path uses 8.02%. Future household-income calculations assume 3% nominal growth each year. These are fixed scenarios, not forecasts or promises.

A 2025 purchase over 30 years has 12 reference months in 2025 and 348 assumed payment months afterwards. That does not make its lifetime cost an observed historical fact. Older scenarios fully within the historical window are still modelled loans rather than records of actual borrower outcomes.

Dashed segments and small labels identify reconstructed prices, rough older income, projected household counts or totals with future payments. A gap is not zero. Enabling the older annual income estimates does not fill unsupported lifetime-income figures. Changing chart units or indexing does not remove those limitations.

Does a longer loan mean better affordability—and how long did people really take?

A longer term can lower monthly repayments while increasing total interest. The explorer uses the same chosen term across purchase years rather than assigning a supposed typical payoff time to each generation.

The available evidence does not establish a precise national first-purchase-to-mortgage-free duration for every historical cohort. A loan account can end through refinancing or a sale, and the amount of interest also depends on when repayments occurred. We therefore do not treat assumed terms as observed payoff times. A five-year payment may be impractical, and a 35-year loan is not assumed to have been offered to every borrower.

“Repayment share over time” averages each month's repayment divided by that month's household-income measure. It does not follow the same family, and a longer term includes more income years. A lower average share alone is not proof that a longer loan is better overall. Read it alongside interest dollars and starting repayments.

What can this housing affordability chart tell me?

This interactive page from Rate Challenge looks at three parts of buying a home: the price and deposit needed to get started, the income needed for repayments, and the interest added over the life of a mortgage. These can tell different stories. A lower mortgage rate can reduce starting repayments without reducing the price or deposit.

Choose up to four measures and compare up to four purchase or reference years. Keep the same repayment term across years to compare like with like. The figures describe a benchmark Australian dwelling and a national household-income measure—not a particular home, suburb or first-home-buyer family.

This is an illustrative comparison, not an affordability score, valuation, borrowing limit, loan quote or lending assessment. A change in one measure is not a complete verdict on which generation had it harder, and two lines moving together do not establish that one caused the other.

What does “start at 100” mean—and what is the original value?

Actual values show the selected measure in its own units: dollars, interest rates, percentages of income, income multiples or years. Mortgage-rate measures can share a percentage axis. The home-building flow measures can also share a count axis. Other measures have separate charts so that different units and stock-versus-flow concepts are not mixed.

Compare growth puts every selected line at 100 on the first date in your chart range with a usable, positive value for all those measures. Each later point shows the change relative to that shared starting point.

Index = value at the selected date ÷ value at the starting date × 100

An index of 150 means the value is 50% higher than at the start. In a comparison starting in 1991, the 2025 home-price value of $1,044,350 is about 714.5 on the index: a rise of about 614.5%, not 714.5%. Changing the starting date changes the index, but not the original dollar amount.

The hover box and Explore panel show both numbers. “Value” means the original figure behind the index; it can still be an estimate or a modelled scenario. The side-by-side year table always uses original values. Adding a measure with a shorter history can move the shared starting date forward. Dates before that point are not indexed, even when an original value is available for one line.

An index is not an inflation adjustment or a percentage interest rate. For rates and percentages, the difference between two original values is expressed in percentage points; the growth index shows relative change instead.

How are deposits, loan sizes and saving years calculated?

Every purchase year assumes a 20% cash deposit and an 80% mortgage. For a $500,000 home that means a $100,000 deposit and a $400,000 loan. These are consistent modelling assumptions, not observations of what buyers borrowed or saved on average.

Deposit = home price × 20%
Loan = home price × 80%
Home price vs income = home price ÷ annual household income
Deposit vs income = deposit ÷ annual household income × 100

“Years to save a deposit” divides that deposit by either 10% or 20% of annual household income, as selected in More options. Home prices and incomes are held unchanged during the saving period, and savings earn no return. Rent and living expenses are not separately calculated. This is a simple comparison, not a forecast of how long someone will actually need.

The core comparison excludes transfer duty, historical mortgage duty, LMI, legal and registration fees, lender charges, direct buyer assistance and ongoing ownership costs such as maintenance, insurance and council rates. Those costs are outside scope, not assumed to be unimportant. Lower-deposit purchases and scheme eligibility are not modelled here.

Which events are shown—and do they explain the changes?

Show key events adds a fine timeline with small ⓘ markers. Select one to open the date, explanation and original sources. There are no event labels covering the lines or shaded areas changing the chart’s emphasis. Nearby dates share a marker when space is limited.

A marker for a longer episode is positioned at its start, or at the left edge when the episode began before your selected range. The full period remains in its explanation. When events are grouped, the marker is positioned between their start dates; the explanation gives each exact date. These markers are historical context, not evidence that a policy or event caused a particular movement. They do not add tax deductions, grants or assistance to the mortgage scenarios.

Use Tab or the left/right arrow keys to move through the markers; Enter or Space opens an explanation and Escape closes it. On phones, the same explanation opens in a readable panel.

Which chart view should I use?

Growth uses the first shared positive observation within your selected dates. It does not compare the size of the original values. Zero or negative series, such as net migration, are usually clearer in Actual values or Combo. The original figure is always available alongside the index.

In Combo, population and homes are not the same unit. Monthly mortgage payments are also kept distinct from home-price dollar amounts. Three or more distinct scales create extra panels automatically. Shared percentage axes still have different definitions: a mortgage rate is not a repayment-to-income ratio.

Do not interpret crossings or similar-looking lines on different scales as proof of a relationship or cause. No missing period is invented to make a chart look complete.

How is the complete dataset put together?

We combine published statistical estimates, retained source files and transparent calculations. A source estimate is not the same as a guessed number, and a calculated value is not relabelled as an observed result. The explorer keeps each measure’s unit, reference period, coverage and source. It does not replace a missing observation with zero.

National home prices

Four-quarter national mean dwelling values from the ABS for 2012–2025. For 1980–2011, the annual BIS nominal eight-city price index is scaled to the 2012 national dollar mean. The earlier dollar values remain estimates, not directly observed national averages. Price method.

Recorded local prices

Published city/region house and unit histories, retained separately from national means. Source-linked or source-estimated local figures are optional. A mean, median, quarterly-median average and national stock value are not silently combined. Local price sources.

Main household income

Retained ABS national-accounts household disposable income, with the stated interest payments added back, divided by household counts. Counts include published estimates, interpolation and recent projections. This is a mean after tax and before interest. Income formula.

Survey income and housing costs

Published ABS Survey of Income and Housing results, at the survey’s financial-year dates only. Before-tax mean and median incomes are shown as annual equivalents; housing-cost ratios remain the published tenure-group percentages. Survey compilation.

Individual earnings

Before-tax full-time adult ordinary-time earnings references, multiplied by 52. The early ABS archive and later CSC-published ABS references retain their source change and reference dates. This is not a household income or actual annual salary. Earnings method.

Mortgage rates

One captured RBA version per measure. Monthly observations are kept; annual averages require twelve months. Advertised rates, paid-rate averages and the older sample remain distinct. Rate sources and coverage.

Deposits and mortgage costs

20% of the benchmark price is the assumed deposit; 80% is borrowed. Starting repayments use a chosen annual rate, while lifetime interest follows the selected monthly rate history and remaining loan balance. Future periods use disclosed scenarios. Loan calculations.

Home building

Complete-year sums of monthly approvals and quarterly starts/completions. Under-construction figures are December snapshots, not sums. Archived source adjustment and coverage differences are retained. Construction compilation.

Building costs and price indexes

Published financial-year completed-house costs and floor areas; indicative cost per square metre divides the corresponding averages. Materials and broad building-price indexes retain their own units and coverage. Cost definitions.

Population and migration

Retained population-change evidence; population levels restored from the archived growth ratios and a published ABS anchor, rounded to 100. Annual changes and completion-per-population ratios are derived separately. Population compilation.

Historical events

A source-linked date register, separate from numerical calculations. A selected period or policy date provides context, not a quantified causal effect. Event dates and sources.

Growth comparisons

Original value divided by the first shared positive value, multiplied by 100. This presentation calculation changes the scale, not the original value. Read the index.

The internal compilation retains original supplied files or the transcribed published table, source identifiers, transformations, coverage and checks. Not every historical original workbook has been independently downloaded again. Where a figure comes from the retained research extraction, an HTML table, a PDF transcription or a secondary published reference, the method says so. A later source release may revise an earlier year without adding 2026 observations.

How are dates, missing values, estimates and updates handled?

Dates stay attached to their meaning. A calendar-year total, financial-year survey result, December stock and late-year earnings reference are not the same period. The short chart label identifies the reference year; the original period is retained in the tooltip, Explore panel, data and detailed method. Combining them in a growth view is an illustrative comparison, not a matched household or transaction panel.

No missing value becomes zero. Complete-year rate averages require twelve monthly points, and annual building flows require all expected periods. SIH observations appear only in surveyed years. A shared growth index requires a positive value for every selected measure on its starting date. Negative migration values can still appear afterwards; an index does not turn them into a positive count.

Calculations and observations are distinguished. Reconstructed prices, CPI-converted survey-income equivalents, projected household counts and future mortgage payments retain their descriptions. Display rounding does not imply precision to the dollar. A series break is not silently repaired by choosing another population or rate definition.

This is a fixed release, not a live data feed. Observations stop in 2025, and survey coverage can finish earlier. The sources include different publication dates. A later release may revise earlier observations; the source register identifies the version or capture used. Historical numerical inputs have not all been independently recaptured from original workbooks for this interface.

Checks cover units, arithmetic, preserved blanks, complete periods, source labels, original values versus growth indexes, and responsive interactions. These checks do not remove sampling uncertainty, source revisions or differences between the national benchmark and an individual buyer. A future update should retain the prior source files and document material changes, rather than publish duplicate near-identical lines.

This page loads only the published results needed for the selected comparison. The source archive and processing code are stored separately from the website. Figures displayed in a chart or downloaded in a selected CSV are public results; they are not a copy of the complete research archive.

Sources, dates and how to cite this page

Prepared by Rate Challenge. Study period: 1980–2025. Data release: 7 September 2026. This edition uses a fixed set of research figures, not live mortgage quotes. Some source publications are later than 2025 because they revise historical values; no observed 2026 value is included.

1. Australian Bureau of Statistics — dwelling values. Total Value of Dwellings, March quarter 2026 provides historical revisions used for 2025. The wider 2012–2025 four-quarter national series is retained from the research inputs.
2. Bank for International Settlements / FRED — historical price index. Residential Property Prices for Australia, QAUN628BIS and the BIS series Q.AU.N.628. Earlier nominal index movements are linked to the 2012 national-dollar anchor. Attribution: National sources, BIS Residential Property Price database.
3. Australian Bureau of Statistics — household income. Australian National Accounts, household income account (Table 20). The retained inputs include gross disposable income and the interest components described above. They were not all independently downloaded again when this display was prepared.
4. Australian Bureau of Statistics — household numbers. Historical household estimates and base-year estimates from successive releases, with interpolation, plus 2021-base household projections for 2022–2025. See the ABS methodology. Mixed source vintages and the earlier rough estimates remain limitations.Historical sources retained in the project: ABS Social Trends 2002; ABS Social Trends 2005; base estimates from the 2006–2031, 2011–2036 and 2016–2041 household publications. The optional early-growth proxy uses the ABS Year Book 2001 historical household/dwelling profile, calibrated to the 1991 household estimate; raw Census dwelling counts are not treated as interchangeable with resident-household estimates.
5. Reserve Bank of Australia — mortgage rates. F5 indicator lending rates, F6 housing lending rates and F5 series-break notes, from the single 7 September 2026 capture.Series: FILRHLBVS standard variable; FILRHLBVD discounted variable; FILRHL3YF three-year fixed; FLRHOFP new owner-occupier principal-and-interest; FLRHOOP existing owner-occupier principal-and-interest; FILRSAVOPI older existing-variable sample.
6. Historical local price records. The optional local-price chart uses Abelson and Chung’s original historical tables, the 2023 Abelson–Joyeux tables, and their 2025 update. These reproduce earlier Valuers-General, REIA, CBA/HIA and later ABS price data. Sources’ own estimates are marked separately. This is not a replacement national-mean series.
7. Reserve Bank of Australia — definitions and interpretation. Dwelling Prices and Household Income, Enhancing the Transparency of Interest Rates and The Reserve Bank's Securitisation Dataset explain the distinctions used here. These sources inform the method; they do not endorse this explorer.
8. Australian Bureau of Statistics — Household Income and Wealth, 2019–20 — Graph 1, weekly household income. Open source11 survey-period observations per gross-income measure. Convert with CPI, then multiply by 52 for an annual equivalent; no missing-year interpolation.
9. Australian Bureau of Statistics — Consumer Price Index, December 2020 — long-term quarterly series. Open sourceFinancial-year mean of four quarterly indexes. Undo the SIH publication’s constant-dollar adjustment; this is a derived nominal estimate, not a recaptured nominal income workbook.
10. Australian Bureau of Statistics — Housing Occupancy and Costs, 2019–20 — Graph 3. Open sourceOwner-with-mortgage and private-landlord renter groups; retain published ratios, do not recalculate them from whole-population income.
11. Australian Bureau of Statistics — SIH User Guide — income concepts. Open sourceGross, disposable, current, annual and equivalised income are different concepts. A 52-week equivalent is not measured annual receipts.
12. Australian Bureau of Statistics — SIH User Guide — housing costs. Open sourcePublished costs include rent, general/water rates and qualifying housing-loan repayments. Mortgage principal is included. Not complete ownership costs.
13. Australian Bureau of Statistics — SIH User Guide — historical information. Open sourceChanging income standards, survey collection, population weights and collection mode affect comparability. No backward or forward imputation.
14. Australian Bureau of Statistics — SIH comparison with Australian Systems of National Accounts. Open sourceAggregate income and wealth reconciliations; not per-household medians, not property sale prices.
15. Australian Bureau of Statistics — SIH User Guide — data item list and comparison workbooks. Open sourceVariable definitions, coverage and aggregate reconciliation evidence. The data-item list is not household microdata.
16. Australian Bureau of Statistics — Average Weekly Earnings, Australia, 1941–1990, catalogue 6350.0. Open source1981–82 late-year original full-time adult ordinary-time observations in the display reference. Full 1981–90 Table 3 persons data retained as supporting source records. Male-only Table 2 is NOT substituted for all persons.
17. Commonwealth Superannuation Corporation / ABS — Average Weekly Ordinary Time Earnings — published reference rates. Open sourceCSC’s published ABS full-time adult ordinary-time reference. CSC describes its rate as trend-based; this is a published-vintage reference, not a fresh single-vintage ABS original series. Period labels are retained, not mistaken for a whole-year average.
18. Australian Bureau of Statistics — Average Weekly Earnings, November 2025. Open sourceThe published trend full-time adult ordinary-time value of $2,050.10 checks the 2025 CSC reference. Original $2,051.10 is not a second chart series.
19. Australian Bureau of Statistics — Average Weekly Earnings — methodology, November 2025. Open sourceBefore-tax employee earnings; ordinary-time versus overtime and compositional change; not household income, median pay or a worker’s actual annual receipts.

The project checks calculations, missing values, rate coverage and consistency between the displayed and exported numbers. Those checks do not make reconstructed inputs exact or independently verify every original economic observation.

To cite a comparison, name Rate Challenge, Australian Housing Affordability Explorer, 1980–2025, include the data release date, selected measures and years, and retain the term, rate choices and estimates or future assumptions. Copy citation and Share view include the selected settings. Chart images and selected CSV downloads include source context; the index and original values remain separate fields.

Please link to the published explorer when sharing its figures. Original ABS, BIS/FRED and RBA source terms still apply; this page does not grant a new licence to upstream data. Excluded costs, data gaps and scenarios should not be stripped from a quoted result.