From July 2027, only new builds can be negatively geared.

It is no longer a proposal. The Treasury Laws Amendment (Tax Reform No.1) Act 2026 passed the Senate on 25 June 2026, and it rewrites the tax position of every Australian residential property investor from 1 July 2027. Add Western Australia's $188 billion project pipeline and a rental market that has been below balance all year, and the case for a new build is both strong and time-bound.

One thing the page below will not do is tell you your deal qualifies. The legislation limits negative gearing to new builds without saying what a new build is, and that definition has not been published yet. It is the first thing worth understanding.

The reform, in three dates.

What ends, what changes, and what survives.

12 May 20267.30pm AEST

The clock starts

Established properties acquired after that moment lose negative gearing from 1 July 2027. Anything held before it, including contracts already signed at the time, is grandfathered and continues under the existing rules until it is sold.

25 June 2026passed the Senate

It became law

The Bill was introduced on 28 May and cleared the Senate with Greens support. It is now the Treasury Laws Amendment (Tax Reform No.1) Act 2026. These are measures, not proposals.

1 July 2027new rules apply

What changes

Rental losses on affected properties are quarantined to residential property income and gains. They are not lost: they carry forward and can be applied against future residential rental income and future residential capital gains. Separately, the 50% CGT discount is replaced with cost base indexation plus a 30% minimum tax on net capital gains.

Not yet setthe definition

What a new build is

New builds sit outside the negative gearing restriction, and keep access to the 50% CGT discount. But the term is not defined in the Act, and the definition has not been released. Everything below depends on it.

Nobody can tell you yet whether your build qualifies.

Including us. This is the single most important thing on the page, and most pages you will read on this subject leave it out.

What the Act does
It limits negative gearing to new builds, and keeps the existing 50% CGT discount available for new residential dwellings.
What it does not do
Define either term. The definition of a new residential dwelling is not in the primary legislation. It is to be published separately, by legislative instrument, at a later date.
What is signalled
Explanatory material points at dwellings that genuinely add to housing supply, and flags knock-down rebuilds as falling outside it. That is direction, not a test you can rely on.
The clearest case
A newly built dwelling on a new lot, adding a dwelling where there was none, is the situation the reform is plainly aimed at supporting.
The one to be careful with
Demolishing an existing home and building in its place. It is new construction, but it does not add a dwelling, and the explanatory material has already flagged it.
What to do about it
Nothing on this page, and nothing a builder or a sales agent tells you, is a ruling. Take the specific package to a registered tax agent, and treat any confident answer about qualification given before the instrument is published as an opinion.

And the CGT side is a choice, not an exemption.

Which is better than an exemption, and worth understanding properly. For a new residential dwelling, the 50% discount stays available, and the new indexation regime is also available. An individual or trustee may choose between them. Over a long hold in a low inflation period the 50% discount usually wins; in a high inflation period indexation of the cost base can win instead. Having both on the table is the advantage. Which one to take is a question for your accountant in the year you sell, not today.

Why Perth, and why now.

Western Australia is in the middle of an unprecedented project pipeline. Close to $188 billion in major builds either under way or breaking ground across the 2026 to 2030 window. Defence, energy, transport, health. Each one draws thousands of workers into the Perth metro for sustained periods, and the labour arrives before the housing does.

$188bn
Major project pipeline

Combined value of WA major projects either commencing or progressing through the 2026 to 2030 window.

1.9%
Rental vacancy, August 2026

Against 2.2% in July and 2.2% a year earlier. Below the 2.5 to 3.5% band REIWA considers balanced, and still tightening.

$750/wk
Perth house median rent

Twelve months to August 2026, REIWA. Units $700. Sustained tenant demand keeps pricing power with landlords.

The headline projects
ProjectSectorTimingValue
Western Green Energy HubRenewables and hydrogenLate 2020s onward$100bn
Australian Renewable Energy Hub, PilbaraRenewables and hydrogenFirst power around 2029$36bn
Woodside Scarborough Gas and Pluto LNG Train 2EnergyFirst LNG 2H 2026$12.5bn
Henderson Defence Precinct expansionDefence and shipbuildingLate 2020s into 2030s$12bn
HMAS Stirling and SRF-West submarine upgradesDefence2027 onwards$8bn
Westport, Kwinana Outer Harbour and supply chainTransport and logisticsBeyond 2026, long dated$7bn
Perth Airport new parallel runway and precinctAviationRunway 2028, precinct 2030+$5bn
Remaining METRONET packagesRailOngoing post-2026$2bn
New Women and Babies Hospital, Fiona StanleyHealthOpens post-2026$1.8bn
Bunbury Outer Ring RoadTransport2026 to 2027$1.25bn
Tonkin Highway extension and Thomas Road upgradeTransportOperations post-2026$1bn
bp Kwinana Energy Hub, hydrogen and SAFHydrogen and biofuelsBeyond 2026$1bn
Joondalup Health Campus redevelopment, stage 2HealthCompleted mid-2026$308m
Total pipeline value$187.9bn

Demand is rising. Supply is not.

REIWA considers a balanced rental market to sit between 2.5% and 3.5% vacancy. Perth has been below that band for years, and it has not come back towards it this year. The monthly figure has moved between 1.9% and 2.2% all the way through 2026, against 2.2% a year earlier. Month to month it is noisy. The band it sits in is not.

0%5%
Perth, 1.9% in August 2026 Balanced, 2.5 to 3.5%

The widely held assumption through 2025 was that Perth was on a steady path back to balance. It has not played out that way. Population growth remains positive, and new supply is coming through the outer corridors at Baldivis, Eglinton, Alkimos, Brabham and Yanchep, but not at a rate that absorbs the demand the project pipeline creates.

The practical translation is that well presented homes in any reasonable location are still leasing in days rather than weeks.

Same block, same builder, twice the income.

A standard new build single dwelling is the obvious option. A dual key home is the option most investors do not realise is available to them. Both are new construction, so both stand or fall on the same undefined test above. The difference between them is what the same patch of land produces.

One title, one block, two tenancies
Main dwelling, 4 bed 2 bath
Bed 1, masterEnsuite and walk in robe
Bed 2 and bed 3Shared bathroom
Kitchen, living, diningPlus bed 4 or study, and laundry
Entry and garage one
Tenancy one$800/wkIts own lease
Fire rated centre wall
Ancillary dwelling, 2 bed 1 bath
Bed 1Semi ensuite
Bed 2Robe
Kitchen, living, diningPlus laundry
Entry and garage two
Tenancy two$650/wkIts own lease
Both entries and both driveways face the street

A dual key home is two self contained dwellings on a single title, divided by a fire rated centre wall. Each has its own front entry, garage and driveway directly to the street, and each is leased as an independent residential tenancy under ordinary residential law.

Option one

Standard new build

4 bed, 2 bath, single dwelling. $1.15m all in.

A new family home on a single title, leased to one household. The conventional Perth investment property.

2.3%Net yield
−$603Cashflow per week

The capital growth play. Straightforward to manage, and it bleeds material cashflow before tax. The investor is paying to hold, and relying on capital growth and depreciation to make the numbers work.

New build tax position. Outside the negative gearing restriction, and the 50% CGT discount stays available. Full depreciation on building and fit out. All of it subject to the definition above.
Option two

Dual key residential

6 bed, 3 bath across two dwellings. $1.15m all in.

Two self contained dwellings on one title, divided by a fire rated centre wall. A 4 bed alongside a 2 bed, each with its own entry and garage, each on its own lease.

4.8%Net yield
−$45Cashflow per week

The balanced position. Effectively cashflow neutral after tax. Two independent income streams spread the vacancy risk. Same builder, same envelope, two standard residential tenancies and no specialist compliance burden.

New build tax position. The same as option one, and subject to the same definition. A dual key is new construction; whether it satisfies a test that has not been written is not something anyone can promise you today.
Annual net operating income, same block
$0$60k
Standard new buildSingle dwelling at $800 a week, 2.3% net
$26,500
Dual keyTwo tenancies at $1,450 a week combined, 4.8% net
$55,500

Around $29,000 a year more net operating income from the same land, the same builder and the same envelope. Both on a $1.15m all in cost base, standard residential management, before tax and before depreciation.

That gap is the whole product story. Everything else on this page is context for it.

On any block or package you are considering, with achieved rents from the same suburb in the last 30 days.

What sits behind those numbers.

Every yield figure on a page like this rests on assumptions that usually go unstated. Here are ours.

Cost base
$1.15m all in, land plus build, like for like across both options.
Rents
Standard $800 a week on a single tenancy. Dual key $1,450 a week total across two tenancies, based on recent comparables in the outer Perth growth corridors.
Mortgage
80% LVR, interest only at 6.3%.
Operating costs
Standard residential management, rates, insurance and prudent reserves. No co-living or lodging house overhead.
Tax position
Pre-tax. Depreciation and negative gearing are not modelled, and both materially improve the after tax cashflow on a new build.
Status
Indicative only. Final returns depend on the property, the suburb, market conditions and the tenant mix.

Four reasons a new build outperforms an established home.

Beyond the tax structure, new builds carry structural advantages that compound across a holding period.

01

Full depreciation

New builds qualify for both capital works deductions, at 2.5% a year over 40 years on the building, and plant and equipment depreciation on appliances, fittings and fit out. Established properties bought after May 2017 face significant restrictions on second hand plant and equipment claims.

02

Negative gearing retained

From 1 July 2027, only new builds can offset rental losses against other income. Every other residential investment acquired after 7.30pm on 12 May 2026 has its losses quarantined to residential property income and gains, carried forward rather than claimed against salary.

03

A choice on capital gains

For new residential dwellings the existing 50% CGT discount stays available, and the new indexation regime is available as well, with the owner choosing between them. For everything else the discount is simply replaced from 1 July 2027 with cost base indexation and a 30% minimum tax on net capital gains. On a long hold, having the choice is worth real money.

04

Lower holding costs

A new home means no immediate capital works. No hot water system replacement, no roof repairs, no kitchen tear out. Maintenance budgets in the first decade of a new build are typically a fraction of those for an established home of the same value.

You probably need less cash than you think.

Most of the investors we work with do not fund a Perth new build out of savings alone. Here is how the deposit usually comes together, in plain English. This is general information, not personal advice. Confirm any specific borrowing strategy with a mortgage broker who understands investment lending.

Path A

Cash deposit, standard loan

On a $1.15m all in package, a typical investor borrows around 80% LVR, or $920,000, and brings the remaining 20% plus stamp duty and acquisition costs of roughly $55,000 in Western Australia.

20% deposit$230,000
Stamp duty and acquisition~$55,000
Cash required~$285,000

Lenders Mortgage Insurance may allow a 10% deposit instead, which lowers the cash in and adds cost.

Path B

Equity in an existing property

If you already own property in Perth or elsewhere that has grown in value, your bank may let you borrow against that equity to fund the deposit and acquisition costs on the new build. The new build still carries its own loan; the cash component comes from the portfolio rather than the savings account.

This is how a significant share of Perth investors fund their second, third or fourth property. Your broker will look at total LVR across the portfolio, your serviceability, and the equity available in each property.

Worth asking them about: useable equity, total portfolio LVR, serviceability headroom, and cross collateralisation risk.

If you do not have a mortgage broker who understands investment lending, we can introduce you to one of our trusted partners. No referral fee is paid to us where the broker is independent. Where we do receive one, it is disclosed at the time.

Deductions start during construction, not after.

One of the lesser known features of a new build is that several costs incurred across the 10 to 12 month build period are generally deductible against your other income in the year they are incurred, well before the property earns its first dollar of rent. This is general information, not tax advice. The Australian Taxation Office publishes specific guidance, and a registered tax agent can confirm your position.

01

Loan interest during construction

Interest on your land and construction loan, paid month by month while the home is being built, is generally deductible in the year it is incurred. On a $1.15m package that can amount to $30,000 to $50,000 or more of deductible interest across the build, depending on the drawdown schedule and the rate.

02

Borrowing costs

Loan application fees, mortgage registration, valuation fees and lenders mortgage insurance where applicable are generally deductible over five years or the loan term, whichever is shorter. Each year a portion reduces taxable income.

03

Holding costs

Council rates, water rates and land tax on the block during construction are generally deductible, assuming the property is being built with the genuine intention of producing assessable rental income.

04

Depreciation, from settlement

Once the property is complete and available to rent, capital works deductions at 2.5% a year over 40 years and plant and equipment depreciation both begin. A quantity surveyor's report in year one captures both.

Investors who claim construction period interest in the year it is incurred are often surprised by their tax position at the end of that first financial year, before the property has earned any rent at all.
Year one
Order a tax depreciation schedule from a qualified quantity surveyor. We can refer you to a vetted partner.
Each tax year
Your accountant claims construction period interest and holding costs in the relevant year.
From settlement
Depreciation joins the deduction stack.
Before lodging
Deductibility depends on your circumstances, the loan structure, the entity holding the property and the timing of expenses. The ATO has specific rulings on what is deductible during construction and when. Confirm everything with a registered tax agent.

Is a Perth new build right for you?

No investment vehicle suits everyone. From watching investors succeed and fail with new builds over the years the pattern is fairly clear. Here is the honest version.

This probably suits you if

  • You have a stable income above $120kthat benefits from a deduction in a year when your marginal rate is high.
  • You already own one or more investment propertiesand can release equity from them to fund the deposit.
  • You have a 10 to 20 year holding view.New builds compound through tax treatment and capital growth, not quick flips.
  • You can comfortably hold at a moderately negative cashflowof $45 to $100 a week before tax, without that stretching you.
  • You want low day to day involvementwith professional management and a clear tax structure.
  • You are approaching peak earning yearsand want to lock in tax advantaged investments while the window is open.

It probably does not if

  • You need positive cashflow from day one.A new build is a leveraged growth and tax play, not a cashflow play.
  • You are funding the deposit from savings you will need within five years.Property is illiquid.
  • You could not service the loan if rates rose another 1 to 2 percentage points.Build a buffer, or wait.
  • You are looking for passive income in the dividend sense.The cashflow profile during the build and the early years is not that.
  • You have not spoken to a mortgage broker about your borrowing capacity.Start there, not here.
  • You have not had a tax planning conversation with your accountant.The deductions only matter if your tax position can use them.

This is a general framework based on patterns we have seen across many Perth investors. Your situation is yours alone. Personal financial advice is the work of a licensed financial adviser, not a property manager. We can refer you to one if you do not already have a relationship.

A property manager who thinks about the investment, not just the rent roll.

Most property managers stop thinking the moment the bond is lodged. We do not, because we manage our own investment property, and we apply the same lens to every owner we work with.

On a new build you get a property manager who has read the builder's quote, knows what a depreciation schedule should capture, can tell you when the rent should be reviewed against the market, can spot an optimistic builder rent estimate, and will introduce you to the broker or accountant or quantity surveyor you need next.

Where the line sits.

Between sharing market knowledge and giving financial advice, because the difference matters and it is not always obvious.

What we can tell you
What the market is doing, what rents are achievable, how a deal stacks up against comparables, and what other investors typically do in similar situations.
What we cannot
What you specifically should do, given your income, assets, debts, goals and risk appetite. That is the work of a licensed financial adviser, who holds an Australian Financial Services Licence and carries professional indemnity for the advice they give.
What we are not
Not a buyer's agent, not a builder, not a financial adviser. A residential property management agency with investment experience, which is a narrower thing and a more useful one to be honest about.
If you need one
We will introduce you to advisers, brokers, accountants and quantity surveyors we trust. You are free to use anyone you choose.

Be the first to see new dual key packages as land releases.

Good dual key blocks do not sit on the market. Land releases come and go through the Perth growth corridors, and the genuinely investable packages, meaning the right block size, the right builder and the right rental comparables, often move within days.

Join the list and we will send you a short, plain English email each time a package comes through that we would actually consider managing. No spruiking, no pressure.

  • New dual key packages as land releases happen
  • Rental appraisals on the package, with comparables
  • The honest pros and cons of each opportunity
  • No more than two emails a month, and only when there is something worth seeing

What investors are asking right now.

What actually counts as a new build under the 2027 rules?

Nobody can answer that with certainty yet, and be careful of anyone who says otherwise. The Treasury Laws Amendment (Tax Reform No.1) Act 2026 limits negative gearing to new builds and keeps the 50% CGT discount available for new residential dwellings, but it does not define either term. The definition is to be published separately by legislative instrument rather than in the primary legislation, and it has not been released. Explanatory material points at dwellings that genuinely add to housing supply and has flagged knock-down rebuilds as falling outside. A newly built dwelling on a new lot is the clearest case; a demolition and rebuild on an existing lot is the one to be careful with. Take the specific package to a registered tax agent, and treat any confident qualification promise made before the instrument is published as an opinion.

Can I still negatively gear a Perth investment property after July 2027?

Only if it is a new build, subject to the definition above. From 1 July 2027 negative gearing on residential investment property is limited to new builds. Established homes acquired after 7.30pm AEST on 12 May 2026 lose the ability to deduct net rental losses against salary and other income, with those losses instead quarantined to residential rental income and gains. They are not lost: they can be carried forward and applied against future residential rental income and future residential capital gains. Properties held before that announcement, including contracts already signed at the time, are grandfathered and continue under the existing rules until sold. Confirm your specific position with a registered tax agent.

Do new builds keep the 50% capital gains tax discount?

Better than that: they get a choice. For new residential dwellings the existing 50% discount remains available, and the new indexation regime is available too, with individuals and trustees able to choose between them. For everything else the discount is replaced from 1 July 2027 with cost base indexation plus a 30% minimum tax on net capital gains. Which of the two options is better depends on how long you hold and what inflation does over that period, so it is a decision for your accountant in the year you sell rather than a calculation to do now.

How much deposit do I need for a Perth new build investment?

Most lenders look for a 20% deposit on investment property, which on a $1.15m package is around $230,000, plus another $50,000 to $60,000 for stamp duty and acquisition costs. So roughly $285,000 cash in. Some investors fund this from savings; many fund it by releasing equity from an existing property that has grown in value, which means the cash does not have to come out of a bank account. Lenders Mortgage Insurance can allow a lower deposit but adds cost. Your specific borrowing capacity, useable equity and serviceability are conversations to have with a mortgage broker who understands investment lending. We can introduce you to one.

Can I use equity from my existing property to buy a new build?

Yes, and this is how a significant share of Perth investors fund their second, third or fourth investment property. If your home or another investment has grown in value, your bank may let you borrow against that equity to fund the deposit and acquisition costs on the new build. The new build still carries its own loan. The right structure depends on your overall portfolio LVR, serviceability, cross collateralisation considerations and tax structuring, so a broker who specialises in investment lending is the right person to design it. This is not financial advice; it is how the option commonly works.

Can I claim tax deductions during the construction period?

Generally yes. Several costs incurred across the 10 to 12 month build period are typically deductible in the year they are incurred, before the property earns rent. These include loan interest during construction, often $30,000 to $50,000 or more on a $1.15m package across the build, council and water rates on the land, land tax where applicable, and borrowing costs such as loan fees, valuation and LMI spread over five years. The ATO has specific rulings on what is deductible and when, and eligibility depends on a genuine intention to produce assessable rental income. Confirm specifics with a registered tax agent before lodging.

Who does a Perth new build investment typically suit?

From watching Perth investors over the years, new builds work best for people with a stable income above around $120,000 who can use the deductions, investors with existing equity to release from another property, those with a 10 to 20 year holding view, and investors who can comfortably hold at a moderately negative pre-tax cashflow. They do not suit investors who need positive cashflow from day one, those funding the deposit from short term savings, or anyone whose serviceability would be stretched by a 1 to 2 percentage point rate rise. The right answer for you specifically is a conversation with a licensed financial adviser.

Are you a buyer's agent or a financial adviser?

No to both. We are a residential property management agency. We do not sell property and we do not hold an Australian Financial Services Licence. What we do is manage Perth investment properties and, in the course of that, watch a lot of investors succeed and fail. We are happy to share what we observe about the Perth market, the new build product, achievable rents and the operational reality. Personal financial advice, meaning whether you should invest, how much, and in what structure, is the work of a licensed financial adviser. We will refer you to one if you do not have a relationship.

What rental yields can I get on a Perth new build in 2026?

A standard new build single dwelling in an outer Perth growth corridor typically delivers 3 to 4 per cent gross and around 2 to 3 per cent net. A dual key new build on the same cost base, meaning two self contained dwellings on one title, typically delivers around 6.5 per cent gross and 4.8 per cent net, generating roughly $29,000 a year more net operating income from the same land. Net cashflow on an 80% interest only loan is meaningfully negative on the standard single dwelling and close to break even on the dual key, before depreciation. Get a free appraisal for the numbers on a specific package or block.

Why is Perth a strong rental market in 2026?

Two reasons. First, Western Australia has roughly $188 billion in major projects either under way or commencing across the 2026 to 2030 window: defence work at Henderson, the HMAS Stirling submarine program, Westport, METRONET, the Perth Airport runway, hospital builds, and the renewables and LNG pipeline. Each draws sustained labour into the state. Second, REIWA put Perth rental vacancy at 1.9% in August 2026, against 2.2% in July and 2.2% a year earlier. The market has stayed below the 2.5 to 3.5% REIWA considers balanced right through the year rather than easing back towards it. Strong demand and constrained supply support both rents and low vacancy.

Is a dual key better than a single dwelling for investment?

On the same Perth block a dual key new build typically generates around $29,000 a year more net operating income than letting it as a single dwelling. The second self contained dwelling produces an independent income stream that more than offsets the marginally higher build cost, and vacancy risk falls because both sides being empty at once is unlikely. Structurally a dual key is one continuous build envelope divided by a fire rated centre wall, each side with its own front entry, garage and driveway. Both sides are leased as standard residential tenancies with no specialist compliance burden, and can be managed at standard residential rates.

Where are dual key packages available in Perth?

Wherever we can secure suitable land. We work with a small number of trusted Perth builders who design and deliver dual key packages on land releases across the metro, particularly through the southern, eastern and northern growth corridors. Packages come and go as land releases progress, so the most reliable way to know what is available right now is to join the dual key list further up this page, or contact us with what you are looking for.

Do new builds in Perth get full depreciation benefits?

Yes. A new build contracted today retains full depreciation on both the building, as capital works at 2.5% a year over 40 years, and the plant and equipment, meaning fittings, appliances and fit out items. Established properties bought after May 2017 have significant restrictions on second hand plant and equipment claims, and from 2027 lose negative gearing access and the CGT discount on top. Order a tax depreciation schedule from a qualified quantity surveyor in your first year to capture the full benefit. We can refer you to a vetted partner.

Have these tax changes actually become law?

Yes. The reforms were announced in the 2026-27 Federal Budget on 12 May 2026. The Treasury Laws Amendment (Tax Reform No.1) Bill 2026 was introduced to the House of Representatives on 28 May 2026 and passed the Senate on 25 June 2026 with the support of the Greens. The measures apply from 1 July 2027. Two things did not come with it. The definition of a new residential dwelling is to be published separately by legislative instrument and has not been released. And a proposed 30% minimum tax on discretionary trust distributions from 1 July 2028 was not included in the Bill; the government has said a separate regime for discretionary trusts will follow, with the details not yet released. Further guidance and explanatory material will continue to be published between now and 2027. Confirm your specific position with a registered tax agent.

Let's talk about your new build.

A free appraisal on any house and land package, builder quote or block you are considering. We will pull recent achieved rents from the same suburb, show you what the numbers look like, and tell you whether the deal stacks up. No obligation and no lock in.