Before anything else — before the design, before the build, before the lease — homeowners want to know: what will it actually earn?
It's the right question to ask. The income from a secondary dwelling on your land is the entire point of the arrangement. And the answer varies significantly depending on where you live, how big the dwelling is, and the current state of the rental market in your suburb.
This article gives you a realistic, suburb-level picture of what granny flat income looks like across Australia's major cities in 2026.
Before the numbers, it helps to understand what drives them:
Location is the single biggest factor. A granny flat in Cremorne, NSW will earn considerably more than an equivalent dwelling in Campbelltown, NSW — simply because of the underlying land value and rental demand in each area.
Dwelling size matters. A self-contained studio of 30sqm will earn less than a full one-bedroom dwelling with 55sqm of floor area and a private outdoor area.
Quality and finish of the dwelling affects both what you can charge and the quality of tenants you attract.
Proximity to transport and employment significantly affects rental demand and therefore income. Granny flats within walking distance of a train station consistently command higher rents.
Current market conditions fluctuate. The figures in this article reflect the rental market as of early 2026.
Sydney's rental market has remained extremely strong. Vacancy rates across most Sydney suburbs are at historic lows, and demand for affordable self-contained dwellings continues to significantly outstrip supply.
| Suburb Area | Weekly Rent Range |
|---|---|
| Inner West (Newtown, Marrickville, Leichhardt) | $580–$750/week |
| Eastern Suburbs (Randwick, Maroubra, Bondi Junction) | $620–$850/week |
| North Shore (Chatswood, Hornsby corridor) | $600–$800/week |
| Parramatta & Hills District | $420–$580/week |
| Western Sydney (Penrith, Campbelltown, Liverpool) | $380–$520/week |
| Northern Beaches | $550–$750/week |
| Southern Sydney (Sutherland Shire, St George) | $450–$620/week |
| Newcastle | $380–$520/week |
| Wollongong | $360–$500/week |
A standard 50–60sqm one-bedroom granny flat in a middle-ring Sydney suburb can reasonably expect to earn $450–$600/week in the current market.
Melbourne's rental market has tightened considerably over the past two years. Inner and middle-ring suburbs continue to perform strongly, and demand for granny flats specifically has grown as renters seek more private, self-contained options.
| Suburb Area | Weekly Rent Range |
|---|---|
| Inner suburbs (Richmond, Fitzroy, Prahran) | $520–$720/week |
| Eastern suburbs (Box Hill, Doncaster, Knox) | $420–$580/week |
| Northern suburbs (Preston, Reservoir, Bundoora) | $380–$520/week |
| South-eastern suburbs (Dandenong, Frankston) | $350–$480/week |
| Western suburbs (Footscray, Werribee) | $360–$500/week |
| Bayside (Brighton, Sandringham) | $550–$750/week |
| Geelong | $320–$450/week |
Brisbane and South East Queensland have seen significant rental market changes following strong population growth. Many established Brisbane suburbs now have granny flat rental income comparable to mid-tier Sydney suburbs.
| Suburb Area | Weekly Rent Range |
|---|---|
| Inner Brisbane (South Brisbane, West End, New Farm) | $500–$700/week |
| North Brisbane (Chermside, Aspley) | $420–$560/week |
| South Brisbane suburbs (Eight Mile Plains, Sunnybank) | $400–$540/week |
| Western Brisbane (Kenmore, Indooroopilly) | $430–$580/week |
| Logan / Southern corridor | $350–$480/week |
| Gold Coast | $440–$620/week |
| Sunshine Coast | $400–$560/week |
Perth's rental market has undergone one of the most dramatic tightening events in Australian history over the past three years. Vacancy rates have been extremely low and rental income for secondary dwellings has risen sharply.
| Suburb Area | Weekly Rent Range |
|---|---|
| Inner Perth (Subiaco, Leederville, Fremantle) | $500–$700/week |
| Northern suburbs (Joondalup, Wanneroo) | $400–$560/week |
| Southern suburbs (Cockburn, Rockingham) | $380–$520/week |
| Eastern suburbs (Midland, Kalamunda) | $360–$500/week |
Adelaide remains one of the most affordable major capital cities for renters, though rental demand has strengthened considerably. Granny flat income in Adelaide is generally lower than Sydney or Melbourne but the cost of producing the income is also lower.
| Suburb Area | Weekly Rent Range |
|---|---|
| Inner Adelaide (Norwood, Unley, Prospect) | $380–$520/week |
| Northern suburbs (Tea Tree Gully, Elizabeth) | $300–$420/week |
| Southern suburbs (Marion, Morphett Vale) | $310–$430/week |
Using a conservative middle-of-range figure for a typical metro property:
On a 99-year land lease, this income is ongoing and formally documented — not subject to the uncertainty of short-term rental markets.
Rental income from a secondary dwelling on your property is generally assessable income for Australian tax purposes. You may be able to claim deductions for eligible expenses including depreciation on the secondary dwelling, management fees, and insurance. The Australian Taxation Office's guidance on rental income and deductions should be reviewed with a registered tax agent for your specific circumstances.
The figures above are market references — not specific to your property. The only way to get a reliable income estimate for your specific backyard is a proper property assessment that considers your suburb, lot configuration, dwelling potential, and local council rules.
Buy My Backyard's free property assessment covers all of this. Submit your details and we'll come back to you within 48 hours with a clear picture of whether your property qualifies and what the income potential looks like.
All rental income figures are market references as of early 2026 and are subject to change. They do not represent guaranteed income from any specific property. Seek independent financial advice before making investment decisions.
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