The singles tax on owning a home in Brisbane and Sydney

Context

Canstar analysis, reported by Domain in February 2026, found the typical house in every Australian capital city out of reach for a solo buyer on the national average full-time wage. This study starts after that hurdle, with the bills that arrive once you own.

The ABC, citing ABS data, reported in October 2026 that a single person spends more than $770 a month more on living costs than a person in a couple. That figure covers all living costs. We could not locate the underlying ABS table. We measure a narrower part of the gap, the cost of running a home you own, from our own suburb data.

Those costs keep rising. In the 10 Queensland councils with a comparable prior year, the 2026-27 minimum residential rate rose by 4% to 11.7%.

In New South Wales, the 2026-27 IPART rate peg lets councils lift their total rates income by 2.7% to 5.7%, and four Greater Sydney councils were approved to go further.

Why owning alone costs more to run

Most of a home's running costs are fixed. A council rate, a water service charge and a building insurance policy cost the same whether one person lives in the house or two. A couple splits them, and a single owner pays the lot.

Electricity grows with the number of people, but it does not double. A one-person household's bill is most of a couple's, because the fridge, the hot water system and the daily supply charge are there either way. Water usage scales with each person too, but the fixed water and sewerage charges do not.

So the singles premium is mostly fixed costs: 82% of it for a Brisbane house and 83% for a Sydney house, at the median. A single owner cannot share them, and cannot cut them by using less.

Add the mortgage and the gap runs into thousands

The running costs are the smaller bill. The largest cost a couple splits is the mortgage, and a single owner repays all of it.

Take the same loan for both households. It is the average new owner-occupier loan in the state in the June quarter of 2026, at 6.2%, the average new variable rate in August 2026, over 30 years.

Greater Brisbane

A single owner in Greater Brisbane pays $5,193 a month to own and run a median house. Each person in a couple pays $2,628. Over ten years at today's rates and prices the difference comes to about $308,000.

These figures assume a typical household and commute. Living alone? Find the suburbs that fit a one-person budget →

Greater Sydney

A single owner in Greater Sydney pays $5,723 a month. Each person in a couple pays $2,903. Over ten years the difference comes to about $338,000.

This is an illustration, not a quote. The loans are state averages across all new owner-occupier loans, not figures for the suburbs on this page, and the same loan is used for both households so that only the split differs. A buyer on one income is often lent less. The RBA raised the cash rate by 0.25 percentage points on 30 September 2026, after the August 2026 rate used here.

Greater Brisbane

Council rates are the QLD minimum residential general rate for an owner-occupied home, a floor most owners exceed. Brisbane, Ipswich, Logan, Moreton Bay and Redland, 443 suburbs.

At the median, a single owner pays $593 a month to run a house, $7,122 a year. Each person in a couple pays $328 a month. The premium for owning alone is $265 a month, $3,180 a year and $31,800 over ten years at today's prices. For most suburbs it sits between $209 and $304 a month.

Joint cheapest houses to own alone

See the full cost of your own shortlist, with the ten-year total →

12 suburbs share the ten lowest figures, so all 12 are listed. 10 tie at $469 a month and 2 share the lowest, $464. Distance to the CBD is shown for reference and was not used to choose them.

The dearest houses to own alone are North Ipswich ($810 a month), Goodna ($810 a month), Riverview ($785 a month). The main driver is estimated insurance, well above the city median, which follows flood exposure in these suburbs.

Joint cheapest units to own alone

For a unit, a single owner pays $604 a month at the median, against $329 for each person in a couple, a premium of $275 a month.

12 suburbs share the ten lowest figures, so all 12 are listed. 3 tie at $524 a month. Many sit well out from the CBD, where strata estimates are lower.

The dearest units to own alone are West End ($834 a month), Milton ($831 a month), Teneriffe ($824 a month). The main driver is estimated strata, well above the city median.

Greater Sydney

Council rates are the NSW average residential rate reported to the Office of Local Government, uplifted by the IPART rate peg. The 32 councils of the Greater Sydney Commission area less Wollondilly, 760 suburbs.

At the median, a single owner pays $566 a month to run a house, $6,791 a year. Each person in a couple pays $325 a month. The premium for owning alone is $241 a month, $2,895 a year and $28,951 over ten years at today's prices. For most suburbs it sits between $209 and $275 a month.

Joint cheapest houses to own alone

12 suburbs share the ten lowest figures, so all 12 are listed. 11 tie at $489 a month. City of Sydney suburbs are left out of this list. That council's average rate is pulled down by its many apartments, so it would overstate how cheap its houses are to run. They are included in the units list.

The dearest houses to own alone are Sackville North ($707 a month), Lower Portland ($707 a month), Leets Vale ($707 a month). The main driver is estimated insurance, well above the city median, which follows flood exposure in these suburbs.

Joint cheapest units to own alone

For a unit, a single owner pays $575 a month at the median, against $323 for each person in a couple, a premium of $254 a month.

12 suburbs share the ten lowest figures, so all 12 are listed. 3 tie at $525 a month and 9 share the lowest, $521.

The dearest units to own alone are Woolwich ($766 a month), Double Bay ($714 a month), Darling Point ($714 a month). The main driver is estimated strata, well above the city median.

House or unit if you are on your own

The two figures cover different things, so this page does not set them against each other.

• A house figure covers council rates, water, electricity and building insurance (AI-estimated). It includes no maintenance, which this model does not estimate, and a house owner pays for all of it.
• A unit figure covers council rates, water, electricity, contents insurance (AI-estimated) and the strata levy (AI-estimated). The strata levy pays for the building's insurance and the upkeep of shared areas, which is why a unit owner insures only their contents.

What to check for your own place

• Your council's rate for your property. Rates follow land value, so your bill can sit well above the figure here. The Brisbane City rates calculator and council rates by area work it out from a valuation.
• A real insurance quote. The insurance figures here are AI estimates for comparing suburbs. A quote for your address can differ a lot, especially in flood-prone areas.
• Strata levies and what they cover. Levies vary by building, and the strata minutes show any special levies coming.
• Your electricity use. The electricity bill calculator estimates a bill for your household size and network.

Related studies

• First home running costs after settlement, house against unit for a first home.
• Brisbane suburb running cost index, every Greater Brisbane suburb ranked.
• Sydney suburb running cost index, every Greater Sydney suburb ranked.
• Queensland electricity bills by household size, what one more person adds.