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Quantum Finance Australia

Investment construction loan

Investment construction loans for a Perth property you build to rent

An investment construction loan funds a property you build to rent out rather than live in. Quantum Finance finds the lenders that will count your proposed rent and structures the facility around a property you intend to hold.

  • For a property you build to rent rather than to live in.
  • Released in stages, with interest only on the drawn balance.
  • Proposed rent often counts, usually at a discount rather than in full.
  • Investment policy varies by lender, so we compare 40+.
Two Quantum Finance brokers working through a client's loan file together at a desk
Years broking
21+Years broking
Loans settled
$1B+Loans settled
Credit licence
ACL 389083Credit licence
Lenders compared
40+Lenders compared

Our awards and recognition

Awarded by the people who see every broker’s numbers
  • Diamond Club

    2026

    Money Quest Group

  • Diamond Club

    2025

    Money Quest Group

  • Diamond Club

    2024

    Money Quest Group

  • Mortgage Broker of the Year

    2023/24 — National, highest dollar volume settled

    Southern Cross Broker Network

  • Excellence in Finance, Gold

    2021

    PLAN Australia

  • Excellence in Finance, Gold

    2020

    PLAN Australia

  • Hall of Fame

    Valued partner, 15 years

    PLAN Australia

  • Elite Broker

    2021

    Broker Value Proposition

  • Premium Broker

    ANZ

  • Individual Excellence Award

    2016

    Specialist Finance Group

  • Sales Excellence Award

    PLAN Australia

  • Sales Master Award

    PLAN Australia

  • Top 100 Brokers

    Four times

    Australian Broker

What our investment construction service does

The work we do on a build you intend to rent out

An investment construction loan funds a property you build to rent rather than live in, released in stages as the build progresses. The work is finding the lender whose policy on rental income and investment construction fits your project, then holding the drawdowns to schedule so the property starts earning.

Lenders value the land and the finished property together, off the fixed price contract and the approved plans.

Every facility is subject to lender approval and your circumstances, and we give you the honest position before anything is submitted.

  • We check the project against investment lending policy first

    An investment build is assessed on a different set of rules from an owner-occupied one, and those rules are not the same at every lender. We work out which lenders will look at your project before an application is lodged, rather than collecting declines against your credit file.

  • We work out what the proposed rent does to your capacity

    Lenders generally count rental income at a discount rather than in full, and the discount is not uniform across the panel. The same project can produce very different borrowing figures at two lenders. We run the numbers across several before you commit to a contract.

  • We size the loan against the finished property

    The lender values the property as if complete, from your fixed price building contract and the approved plans. Work outside that contract is generally not counted, which matters on an investment where a fit-out decides what the property rents for. We flag those items early.

  • We run the drawdown cycle so the site keeps moving

    Your builder issues a progress claim, the lender usually sends a valuer to confirm the stage is finished, you sign an authority, and the builder is paid. Every week the site is idle is a week the property is not earning. We chase the cycle rather than waiting on it.

  • We plan for the months before a tenant moves in

    Repayments climb with every drawdown, and the rent starts only after the property is finished and let. The gap between full drawdown and the first rent payment is the part investors underestimate. We work out what you carry in that window before the build starts.

  • We review the structure once the loan converts

    At practical completion the facility becomes an ordinary home loan on the drawn balance. On an investment that is the point to review the rate, the repayment type and how the loan sits against the rest of your portfolio. We diarise it rather than leaving it.

Work out the numbers on an investment build

Duty on the land, then the repayment you carry before the rent starts

Two numbers decide whether an investment build works. Transfer duty is payable when the land settles, and the repayment at full drawdown is what you carry in the months between the last stage and the first rent payment.

Work out your WA stamp duty

The dutiable value. Usually the contract price, or the market value if that is higher.

Who is buying

First home buyer rates apply only if nobody on the contract has owned a home in Australia before, and you move in.

What you are buying

Foreign buyers pay an extra 7% of the dutiable value on residential property in WA.

Rates as at 10 August 2026, source: RevenueWA.

Estimated duty payable

$24,890

Scale applied
General rate
Transfer duty
$24,890
Duty at the general rate
$24,890

This is an estimate of transfer duty only, on the 10 August 2026 RevenueWA scale. It does not include Landgate transfer or mortgage registration fees, settlement agent fees, or the off-the-plan concession. RevenueWA assesses the final figure.

Talk through your purchase costs

Each tool has a page of its own explaining every figure it uses: stamp duty calculator wa and home loan repayment calculator.

Who an investment construction loan suits

The investment builds we arrange finance for

Every project below is a build held to rent rather than to occupy, funded progressively against a valuation of the finished property. These are the situations that arrive most often.

  • Investors building a rental on a lot they have bought

  • Owners building a second dwelling on a subdivided block

  • Investors adding a duplex or a pair of villas to a portfolio

  • Owners living at the front and building to rent at the back

  • Anyone whose bank has declined a build that the numbers support

How our investment construction process works

Five steps to approval, then a drawdown at every stage

The application runs the same five steps as any loan we write. What follows approval is the part unique to a build: a progress claim, a valuer, an authority and a payment, repeated until the property is finished and ready to let.

  1. Start an application

    You send us the basics and we work out what you could borrow and which lenders will look favourably at your situation.

    What you need

    Income, debts, deposit

    Read this step in full: Start an application
  2. Get pre-approved

    We put your file to the lender that fits and bring back a pre-approval in writing, subject to lender approval and your circumstances.

    What we do

    Match the lender to your file

    Read this step in full: Get pre-approved
  3. Get officially approved

    Once your offer is accepted, the lender orders its valuation and issues formal approval.

    What we do

    Chase the lender, so you do not have to

    Read this step in full: Get officially approved
  4. Prepare for settlement

    We go through the loan documents with you before you sign anything, then coordinate the lender and your settlement agent.

    What you need

    Your questions, asked early

    Read this step in full: Prepare for settlement
  5. Stay up to date

    After settlement we keep the loan under review as rates move and your circumstances change.

    What we do

    Review it, and tell you first

    Read this step in full: Stay up to date

Step 1 of 5

About our independent mortgage brokers

The brokers who fund your investment build

Independent means no franchise above us and no lender owning a share of the business. Nobody upstairs sets a monthly target, so an investment build goes to the lender whose policy on rental income and construction actually fits it. Your bank sells one product; we compare 40+.

Gavin Harrigan has been broking from West Leederville since 2005. Today it runs on a small team, Gavin Harrigan, Justin Richardson and Xavier Prescott, each with their qualifications on the page. You deal with the person who writes your loan, before settlement and after it.

The work runs from a first home loan, through refinancing and investment lending, out to construction, small developments and commercial property. Same broker, whichever end of that you are at.

  • VerifiedBroking since 2005
  • VerifiedOver $1 billion in loans settled
  • VerifiedAustralian Credit Licence 389083
  • VerifiedMoneyQuest accredited
  • VerifiedMember of the Finance Brokers Association of Australia (FBAA)
  • Verified40+ lenders on the panel

Fifteen minutes is usually enough to tell you where you stand. No cost, no obligation, and any lending is subject to approval and your circumstances.

The Quantum Finance broking team at their West Leederville office in Perth
Gavin Harrigan at his desk at the Quantum Finance office in West Leederville, industry awards on the wall behind him

Why choose us for an investment build

Two lenders will read the same project and lend you different amounts

Every point below is a consequence of how this business is owned, not a slogan about service.

  • Included

    No franchise, no head office quota

    We do not pay a franchise fee, so nobody upstairs sets a monthly target for us to hit. That removes the main reason a broker recommends the wrong loan.

  • Included

    No lender owns a share of us

    The banks have no stake in this business and no claim on where files go. Your bank has one loan to sell you. We do not.

  • Included

    40+ lenders, one shortlist

    We compare 40+ bank and non-bank lenders, then explain why the shortlist looks the way it does. Policy differences decide more applications than rate does.

  • Included

    We will tell you when the answer is no

    If refinancing does not actually save you money, we say so and you leave the loan where it is. A wrong loan costs more than the fee it earns.

  • Included

    The same broker after settlement

    You keep dealing with the person who wrote the loan. We review it as rates and your circumstances change, not once and then never again.

Book a 15-min chat

What our clients say

In their words, not ours

Reviews left by people we have settled loans for, pulled straight from the platform they were written on.

Our construction lender panel

Rental income is read differently by every lender, so we compare 40+

Major banks, second-tier banks, and non-bank lenders who will look at a build the majors will not. MoneyQuest gives us access to the panel. 21+ years of writing loans on it tells us which lender counts what.

  • ANZ
  • Commonwealth Bank
  • NAB
  • Westpac
  • St.George
  • Bankwest
  • Suncorp Bank
  • ING
  • Citi
  • Macquarie
  • AMP
  • ME Bank
  • P&N Bank
  • Firstmac
  • Homeloans
  • La Trobe Financial
  • Liberty
  • Pepper Money
  • Bluestone
  • PLAN Lending

A selection of the lenders we are accredited with. Ask us who else is on the panel for your situation.

Meet our Perth construction finance brokers

You get a broker, not a call centre

Three people, all named, all reachable. The person who structures your investment build is the person who chases each drawdown and the person who reviews the loan against your portfolio afterwards.

  • Gavin Harrigan, Managing Director of Quantum Finance Australia in Perth

    Gavin Harrigan

    Managing Director

    Broking since 2005, four-time Top 100 broker and a PLAN Australia Hall of Fame member.

    • Bachelor of Commerce, Applied Finance and Commercial Law — Curtin University
    • Diploma of Finance and Mortgage Broking Management — AAMC Training Group
    • PLAN Australia Hall of Fame member
    • Elite Broker status
    • Top 100 Brokers, four times
    Read profilefor Gavin Harrigan
  • Justin Richardson, Loan Consultant at Quantum Finance Australia

    Justin Richardson

    Loan Consultant

    Business and law background, and a habit of making the process feel simple.

    • Bachelor of Commerce, Business Law and Marketing — Curtin University
    • Bachelor of Laws (in progress) — Murdoch University
    Read profilefor Justin Richardson
  • Xavier Prescott, Loan Consultant at Quantum Finance Australia

    Xavier Prescott

    Loan Consultant

    Fresh qualifications, a competitor's discipline, and a lot of patience.

    • Diploma of Finance and Mortgage Broking Management
    Read profilefor Xavier Prescott

Common questions about investment construction loans

What is an investment construction loan?

It is a construction loan for a property you build to rent out rather than occupy. Money is released in stages as the build progresses and interest applies only to the drawn balance. Lenders assess it under their investment lending policy, which differs from their owner-occupier policy.

Do lenders count rent I have not received yet?

Many will count the proposed rent on the finished property, usually supported by a rental assessment from the valuer. It is generally counted at a discount rather than in full. How much of it counts varies by lender, which is why the same project produces different borrowing figures.

How is this different from an owner-occupier construction loan?

The build mechanics are the same, including the progress stages and the drawdown cycle. The assessment differs, because lenders apply investment lending policy and read rental income under their own rules. Deposit expectations and product choice can also differ, subject to lender approval.

Can I build an investment property on a block I already own?

Often yes. Equity in the land can contribute towards or cover the deposit on the construction facility, subject to a current valuation and your serviceability. Owners subdividing an existing block and building at the rear do this regularly, and it is one of the more common files we see.

Can I fund two dwellings on one title this way?

A duplex or a second dwelling can usually sit under a construction facility. Once a project runs to several dwellings, or the intention is to build and sell, lenders generally move it into development finance and assess it on the project rather than mainly on you.

What do I pay while the property is being built?

Interest on the drawn balance, which rises with every stage, plus any drawdown or valuation fees the lender charges along the way. There is no rent coming in until the property is finished and let, so plan for the gap between the final drawdown and the first tenant.

Is the interest deductible during construction?

That is a question for your accountant, and it turns on your circumstances and on when the property becomes available to rent. We do not give tax advice. What we can give you is exactly what interest was charged and when, so your accountant has accurate figures to work from.

The information on this page is general in nature and does not take into account your objectives, financial situation or needs. Any figures shown are estimates only. Lending is subject to approval, and to the lender's terms, conditions, fees and charges. Consider whether the information is appropriate for you before acting on it.

Get in touch

Talk to us before you commit to an investment build

Four questions and you are done. A broker reads it, works out which lenders will count your rent, and rings you back on the number you give us.

Would rather just talk?

Ringing is quicker than waiting for us to ring you, and you get a broker rather than a queue.

1300 813 113

Tell us what you need

Four details, about twenty seconds. We ask the rest on the call, where you can ask us things back.

An Australian mobile or landline. Overseas? Give us the number you use at home and we will work around the time difference.

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