About NestCost

Honest, source-cited cost-of-living data for Australian renters.

What this site does

NestCost answers a simple question: can I afford to live in this suburb? We combine quarterly government bond lodgement data — actual rents being signed, not advertised asking prices — with ABS Census income figures to show what salary you need to keep rent below 30% of your gross income (the standard rental-stress threshold).

We cover NSW, VIC, and QLD — about 75% of Australia's population — with plans to expand to the remaining states.

Where the data comes from

Every number on this site traces back to a primary source we can name:

  • Rent figures (NSW) — NSW Department of Communities and Justice (DCJ) Rent & Sales Report, by postcode, quarterly.
  • Rent figures (QLD) — Residential Tenancies Authority (RTA) Median Rents data, by suburb, quarterly.
  • Rent figures (VIC) — Homes Victoria (DFFH) Rental Report, by suburb/town, quarterly. Some VIC suburbs are reported as grouped areas — we flag this on each affected page.
  • Household incomes & demographics — Australian Bureau of Statistics, 2021 Census (table G02), at suburb level.
  • City cost adjustments — ABS Consumer Price Index (CPI), by capital city, quarterly.
  • Suburb coordinates & postcode mapping — ABS Statistical Area Level 1 (SAL) and Postal Area (POA) centroids.

Methodology

"Salary needed"

We use the 30% rule: annual income required = (weekly rent × 52) ÷ 0.3. This is the same threshold the ABS and most housing-policy bodies use to define "rental stress". The figure is in gross (pre-tax) income — your actual take-home will be lower.

Household types

Single uses 1-bedroom rent, couple uses 2-bedroom, family uses 3-bedroom. Where a bedroom-specific median isn't published for a suburb, we fall back to the all-dwellings median.

Rent trend chart

Where a suburb has a published year-on-year change but only one current quarter on file, we estimate the previous four quarters by interpolating from that annual change. Estimated points are shown as a dashed line and noted on the chart. They are replaced with actual bond data as new quarters are published.

Update cadence

State bond authorities publish quarterly. We re-run the data pipeline shortly after each release. The "data updated" timestamp on each page reflects when our last build ran. Census figures will not refresh until 2026 Census results are released (expected 2027–2028).

Limitations

  • Bond lodgements only capture new tenancies — long-term renters on older leases pay less.
  • Median figures hide variance — a suburb with a $600/wk median has plenty of $450 and $800 properties.
  • Census income data is from 2021 — actual incomes have risen with inflation since.
  • VIC publishes suburb data ~6 months in arrears; NSW and QLD publish ~3 months in arrears.
  • Regional and rural areas (more than 100km from a capital city) are labelled as "Regional <State>".

Contact

Spotted a problem with the data, or want to suggest a feature? Email hello@nestcost.com.au.