Whether you’re adding a home office, a rental granny flat, or extra living space for family, one of the first questions our clients ask is: “How do I pay for it?” The good news is there are more financing options available today than ever before, from traditional home loans through to fast vendor payment plans that can be approved in under an hour.

This guide walks you through every major financing pathway, compares key lenders, covers Queensland government grants you may be eligible for, and helps you choose the best option for your situation.

1. Understanding Modular Finance

General information, not financial advice. This page explains how modular builds are usually financed in Australia. It does not take your circumstances into account. Rates, lender policies and grant rules change often, so confirm anything here with your broker, your lender or the Queensland Revenue Office before you act on it. Figures below were checked on 14 August 2026.

Financing a modular building works differently from a traditional home build. With conventional construction, the bank can see physical progress on your land at every stage and uses the emerging structure as security. Modular buildings, by contrast, are manufactured off-site in a controlled factory environment and delivered to your property in a near-complete state.

This off-site construction model means lenders have historically been more cautious, since the building isn’t sitting on your land as collateral during the manufacturing phase. However, the landscape is changing rapidly. The Commonwealth Bank of Australia recently became the first major bank to join PrefabAUS (the peak body for off-site construction) and has updated its lending policies to better accommodate modular builds.

For Outhaus clients specifically, you’re purchasing a Class 1a modular studio or secondary dwelling, a permanently fixed, fully compliant structure built to the National Construction Code. This classification is important because it means your building is treated as a legitimate residential structure by councils and lenders alike, opening up a wider range of financing options.

Key Differences: Modular vs Traditional Construction Finance

Factor	Traditional Build	Modular Build
Construction Location	On-site, visible to lender	Off-site in factory, then delivered
Progress Payments	5–6 stages (slab, frame, lock-up, fit-out, completion)	Typically 2–3 stages (deposit, pre-delivery, completion)
Collateral During Build	Structure on land serves as security	Land only until installation
Typical Timeline	6–12 months	8–16 weeks from order
Lender Familiarity	All major lenders	Growing, CBA leading the way

2. Your Financing Options at a Glance

There are five main pathways to finance your Outhaus modular building. Each has distinct advantages depending on your equity position, how much you need to borrow, and how quickly you want to get started.

Option	Typical Rate	Max Amount	Term	Security	Speed
Home Equity / Refinance	5.5–7.5% p.a.	Up to 80% LVR	Up to 30 yrs	Your property	2–6 weeks
Construction Loan	5.5–7.5% p.a.	Up to 80% LVR	Up to 30 yrs	Your property	4–8 weeks
Personal Loan	7–20% p.a.	$50k–$100k	1–7 years	Unsecured	1–3 days
Vendor Payment Plan	From 6.99% p.a.*	Up to $100k	1–7 years	Unsecured	Same day
Cash / Savings	0%	Unlimited	N/A	None	Immediate

*Rate shown is the discounted Green Loan rate for eligible applicants. Actual rates are based on individual credit assessment.

3. Option 1: Home Equity Loan or Refinance

If you own your home and have built up equity, this is typically the most cost-effective way to finance your modular build. You’re essentially borrowing against the increased value of your property at home loan interest rates, which are significantly lower than personal loan rates.

How It Works

Your lender assesses the current market value of your property and your outstanding mortgage balance. The difference is your available equity. Most lenders will allow you to borrow up to 80% of your property’s value (the loan-to-value ratio, or LVR) without requiring Lenders Mortgage Insurance (LMI). If you’re willing to pay LMI, some lenders extend this to 90% or even 95%.

For example, if your home is valued at $800,000 and you owe $400,000, your equity is $400,000. At an 80% LVR, you could potentially access up to $240,000 ($800,000 × 80% = $640,000 minus your $400,000 mortgage).

Best For

• Homeowners with significant equity built up in their property
• Those seeking the lowest possible interest rate
• Larger projects or full secondary dwelling builds
• Clients who want to spread repayments over a longer term

Considerations

• Requires a property valuation (can take 1–2 weeks)
• Your home is used as security, meaning there is risk if you default
• The application process is more involved than a personal loan
• Some lenders may want to see council approvals before releasing funds

4. Option 2: Construction Loan

Construction loans are specifically designed for building projects. They release funds in stages as the build progresses, and you typically only pay interest on the amount drawn down at each stage. Once the build is complete, the loan converts to a standard home loan.

How It Works for Modular

Modular construction doesn’t follow the traditional five or six stage drawdown that lenders are accustomed to with on-site builds. Instead, your payment schedule may include an initial deposit at contract signing, a progress payment once the modules are completed in the factory, and a final payment upon delivery and installation.

Some lenders, notably CBA, now allow progress payments of up to 60% of the total contract price before the home is installed on-site, increasing to 80% for accredited prefab manufacturers.

Key Lenders for Modular Construction Loans

Lender	Key Feature	Max Pre-Install Payment	LVR
Commonwealth Bank (CBA)	First bank to join PrefabAUS; standardised modular contracts	Up to 60% (80% for accredited builders)	Up to 80%
Gateway Bank	Offset accounts, redraw facilities, competitive rates	Progress payments available	Up to 95%
Bankwest	Third payment stage option; strong WA presence	Up to 95% of land value	Varies
Regional Australia Bank	Flexible terms for regional builds; land + construction packages	Tailored per project	Up to 90%
Coastline Credit Union	Good for smaller deposits; community-focused	Tailored per project	Up to 90%

Lender features and LVR caps above are indicative and were checked on 14 August 2026. Lender policy on off-site construction changes regularly and varies by applicant. Confirm current terms with the lender or your broker.

Best For

• Clients building a full secondary dwelling on their land
• Those purchasing land and building as a package
• Projects where the total cost is higher and a mortgage-rate loan is needed

Considerations

• Not all lenders understand modular construction, a specialist broker is essential
• You may need to own your land outright or have substantial equity for larger pre-delivery payments
• The approval process can take several weeks
• You’ll need council-approved plans and building permits before most lenders release funds

5. Option 3: Personal Loan

A personal loan is an unsecured (or sometimes secured) loan from a bank, credit union, or online lender. Because your home isn’t used as collateral, approval can be faster and simpler, but the trade-off is higher interest rates and shorter repayment terms.

How It Works

You apply for a lump-sum loan, typically between $5,000 and $100,000, and repay it in fixed monthly (or fortnightly/weekly) instalments over a set period. Interest rates in Australia typically range from around 6% to 20% for borrowers with good credit, though they can be higher depending on your credit profile.

Best For

• Smaller modular studio projects under $80,000
• Clients who don’t have sufficient home equity or prefer not to refinance
• Those who want fast approval and a straightforward application
• Renters who are building a studio on a relative’s land

Considerations

• Higher interest rates than home equity or construction loans
• Shorter repayment terms (typically 1–7 years) mean higher monthly repayments
• The maximum loan amount is usually capped at $50,000–$100,000
• Missed payments can significantly impact your credit score

6. Option 4: Vendor Payment Plans

Vendor finance is where a specialist lending partner works directly with your building provider to offer a streamlined payment plan. The lender pays the builder directly, and you repay the lender over time. This option is designed to be fast and simple, often with approval in as little as an hour.

How Vendor Payment Plans Typically Work

1. You select your Outhaus modular building and receive a quote
2. You apply online through the vendor finance partner’s platform
3. You receive a personalised interest rate based on your credit assessment
4. Once approved, funds are settled directly to Outhaus
5. You make regular repayments (weekly, fortnightly, or monthly) to the lender

What to Look For in a Vendor Finance Partner

Feature	What It Means For You
Interest Rate	Look for competitive, personalised rates based on your credit profile rather than a flat rate. Eligible applicants may receive rates from around 6.99% p.a.
Loan Amount	Ensure the lender can cover the full cost of your project. Lending limits of up to $100,000 are common for home improvement vendor finance.
Repayment Term	Longer terms (up to 7 years) reduce your regular repayment amount but increase total interest paid. Choose a term that balances affordability with total cost.
Ongoing Fees	The best vendor finance products charge no ongoing monthly fees. Check before you commit.
Early Exit Fees	Flexibility to pay off your loan early without penalty is valuable. Look for no early exit fees.
Establishment Fee	Most lenders charge an upfront fee (often 0–6% of the loan amount). Factor this into your total cost calculation.
Approval Speed	Vendor finance is designed for speed. Pre-approval in minutes with full results often available within an hour.
Repayment Flexibility	The ability to choose weekly, fortnightly, or monthly repayments aligned with your pay cycle makes budgeting easier.

7. Option 5: Cash or Savings

If you have the funds available, paying outright avoids all interest charges and gives you the simplest, fastest path to your new modular building. You may also be able to use funds from your mortgage offset account or redraw facility if you’ve made extra repayments.

Best For

• Clients with available savings or liquid assets
• Those with a well-funded offset or redraw account
• Investors seeking to maximise return by eliminating financing costs

Considerations

• Depleting savings can leave you exposed to unexpected costs
• Using your offset or redraw may increase your regular mortgage repayments
• Consider whether your money could earn a better return invested elsewhere

8. Government Grants & Incentives (QLD)

Depending on your circumstances, you may be eligible for government support that can significantly reduce the upfront cost of your modular build. Here are the key programs relevant to Queensland homeowners and first home buyers.

Queensland First Home Owner Grant (FHOG)

The Queensland Government offers a $30,000 grant for eligible first home buyers who purchase or build a new home. The $30,000 amount applied to contracts signed from 20 November 2023, and the Queensland Government has since extended it, so it continues for eligible contracts signed from 1 July 2026 onward. An earlier version of this page said it would revert to $15,000. It did not. Confirm the current amount with the Queensland Revenue Office before you rely on it. The home must be a new dwelling valued at less than $750,000 (including land) and classified as a Class 1a building.

Importantly, you may be eligible for the FHOG if you build a detached dwelling, such as a granny flat or secondary dwelling, on a relative’s land, provided the total transaction value is under $750,000 and you meet all other eligibility criteria. This is a significant opportunity for first home buyers considering a modular dwelling as their first home.

Stamp Duty Concessions for First Home Buyers

From 1 May 2025, first home buyers in Queensland who purchase a new home or vacant residential land to build their first home can apply for a full transfer duty (stamp duty) exemption, with no price cap on the property value. This can be combined with the FHOG for substantial savings.

Regional Home Guarantee

The Federal Government’s Regional Home Guarantee allows eligible buyers to build new homes in regional areas with just a 5% deposit and no Lenders Mortgage Insurance. Unlike some other schemes, this isn’t limited to first home buyers, all eligible buyers in regional areas can apply.

Energy Efficiency Incentives

Queensland offers grants and rebates for energy-efficient home features including solar panels and battery storage. Outhaus modular buildings can be designed with energy-efficient features that may make you eligible for additional rebates under the Small-scale Renewable Energy Scheme (SRES) and various state programs.

9. Choosing the Right Option For You

The right financing pathway depends on your personal financial situation. The guide below can help steer your thinking, but we always recommend speaking with a qualified mortgage broker or financial adviser who has experience with modular construction.

If Your Situation Is…	Consider This Option
I own my home with significant equity and want the lowest rate	Home Equity / Refinance, lowest rates, longest terms, maximum flexibility
I’m buying land and building a full secondary dwelling	Construction Loan, staged drawdowns aligned to your build schedule
I need a smaller amount quickly and don’t want to touch my mortgage	Personal Loan or Vendor Payment Plan, fast approval, no property security required
I want the simplest possible process with no property valuation	Vendor Payment Plan, apply online, approval in as little as an hour, funds settled directly
I have cash available and want to avoid all interest costs	Cash / Savings, zero interest, immediate start, simplest option
I’m a first home buyer building on a relative’s land	Check FHOG eligibility ($30,000 grant), then Personal Loan or Vendor Payment Plan for the build

10. Your Step-by-Step Financing Checklist

1. Define your project. Decide what you’re building (studio, granny flat, secondary dwelling) and get a preliminary quote from Outhaus.
2. Check your financial position. Review your savings, equity, income, and existing debts. Know your credit score.
3. Explore government grants. Check your eligibility for the FHOG, stamp duty concessions, and any regional or energy incentives.
4. Talk to a mortgage broker. Find one experienced with modular construction. They can compare lenders and find the best product for your situation.
5. Get pre-approval. Whether it’s a home equity loan, construction loan, or personal loan, pre-approval gives you a clear budget before you commit.
6. Secure council approvals. Most lenders require DA or building approval before releasing funds. Outhaus can guide you through the approval process.
7. Finalise your Outhaus contract. With your finance and approvals in place, sign your building contract and lock in your project timeline.
8. Manage progress payments. Work with your lender and Outhaus to align payment stages with your loan drawdown schedule.
9. Installation and completion. Once your modular building is delivered and installed, your lender may require a final inspection or valuation.
10. Enjoy your new space. Whether it’s a home office, guest suite, or rental property, your investment starts working for you from day one.

Financing a granny flat, specifically

Most people searching for granny flat finance already own a house. They want a second dwelling on the same title, which changes what applies.

A secondary dwelling shares your title. It is not separately titled and cannot be sold on its own, so you cannot take a separate mortgage against it the way you would a standalone property. What you are financing is an improvement to land you already own, which is why home equity and construction loans are the two routes most Outhaus clients use.

The Class 1a point matters more here than anywhere else on this page. An Outhaus module is built to residential standards and certified Class 1a, the same classification as the house in front of it. That lets a valuer assess it as habitable floor area rather than an outbuilding, which is the difference between a lender treating it as an improvement to the property and treating it as a shed. Ask your broker for an “as if complete” valuation and we will supply the specifications and plans they need.

If you are a first home buyer building on a relative’s land, the Queensland First Home Owner Grant can apply to a detached dwelling. The building contract has to be in your name, the relative has to be a parent, grandparent, child, stepchild or sibling, the total transaction value has to stay under $750,000, and the relative signs a statutory declaration authorising the build. The relative keeps title to the land. Check the current rules with the Queensland Revenue Office before you count on it.

For what the build itself costs before you talk to a lender, see what a granny flat costs in Queensland and the secondary dwelling cost breakdown. For what your council allows, start with the granny flats hub.

11. Frequently Asked Questions

Can I get a loan for a modular building if I don’t own the land?

It depends. If you’re building on a relative’s land, you may be able to use a personal loan or vendor payment plan. Some lenders also accept agreements or long-term leases on the land. You likely won’t be able to get a construction loan without owning the land or having it as part of the security.

Will my modular building add value to my property?

In most cases, yes. A well-designed, council-approved secondary dwelling or studio adds usable living space and, where rentable, an income stream. Properties with granny flats or studios often attract premium valuations. However, over-capitalisation is possible, so research demand in your area and get a post-build valuation estimate from your lender before committing.

Do I need council approval before I can get finance?

Most lenders, particularly for construction loans, will require at minimum a Development Application (DA) or building approval. For personal loans and vendor payment plans, council approval is generally not a prerequisite for the loan itself, but you’ll still need it before construction begins.

What if my bank doesn’t understand modular construction?

This is common. If your current lender is unfamiliar with off-site construction, consider working with a mortgage broker who specialises in modular builds. They’ll know which lenders have experience and flexible policies. Outhaus can also provide documentation and building specifications to help educate your lender about the process.

Can I use a combination of financing methods?

Absolutely. Many clients use savings for the initial deposit and a loan for the balance. Others refinance their mortgage for the bulk of the cost and use a personal loan or vendor payment plan for additional fit-out or site works. A good financial adviser can help you structure the most cost-effective approach.

What deposit do I typically need?

This varies by financing method. Home equity loans and refinancing may require no additional deposit if you have sufficient equity. Construction loans typically require 10–20% of the total project cost. Personal loans and vendor payment plans generally require no deposit, though interest rates may be lower with a larger upfront contribution.