Can You Get a Construction Loan to Build a House in Australia?

Getting a Construction Loan to Build a House in Australia

Building a house usually needs a different loan structure from buying an established home.

Some lenders may approve construction loans for house and land packages, knockdown rebuilds, major renovations or building on land you already own. Others may have stricter rules around fixed-price contracts, builder licences, progress payments, land ownership, cost overruns and when construction must start.

This is where many borrowers get caught.

You may have pre-approval for a normal home loan, but that does not mean the lender will automatically approve the construction side. A construction loan needs the lender to assess the land, building contract, builder, plans, valuation and your ability to cover costs during the build.

This guide explains how Australian lenders may assess construction loans, based on current policy research.

What is a construction loan?

A construction loan is a home loan used to build a new property or complete major building works.

Instead of giving you the full loan amount at settlement, the lender usually releases funds in stages as the build progresses.

These stages are called progress payments.

A construction loan may be used for:

• building a new home
• house and land package
• knockdown rebuild
• major structural renovation
• building on land you already own
• adding a large extension
• completing a partially built home
• owner-occupied construction
• investment property construction

Construction finance is more detailed than a standard purchase because the property does not fully exist yet.

How does a construction loan work?

A construction loan usually has two parts.

The land loan covers the land.

The construction loan covers the building works.

If you already own the land, the lender may only need to finance the build. If you are buying land and building, the lender may assess both together.

The lender will usually approve the total loan based on:

• land value
• building contract
• plans and specifications
• expected completed value
• borrower income
• deposit or equity
• builder details
• construction timeframe
• total project cost

Once approved, funds are normally paid to the builder in stages rather than upfront.

Related research: How Do Construction Loan Progress Payments Work?

What are progress payments?

Progress payments are staged payments made during construction.

A common progress payment schedule may include:

• deposit
• slab or base stage
• frame stage
• lock-up stage
• fixing stage
• practical completion

The lender may release money after each stage is completed and verified.

Depending on the lender, each progress payment may require:

• builder invoice
• progress payment request
• inspection report
• valuation update
• borrower confirmation
• evidence previous stages were completed
• confirmation no major variations have affected the loan

Progress payments help reduce the risk of paying for work before it is completed.

Can you get a construction loan with a 5% deposit?

It may be possible with some lenders, but construction lending with a small deposit can be harder.

A 5% deposit usually means a high-LVR loan. With construction, the lender is also taking on build risk, valuation risk and completion risk.

A small-deposit construction loan may be harder if:

• lenders mortgage insurance is required
• the building contract is not fixed price
• the builder is not acceptable
• savings history is weak
• the land is unregistered
• the property is in a remote area
• there are large variations
• the completed valuation is lower than expected
• the borrower has limited cash buffer

Some borrowers may need a larger deposit for construction than they expected.

Related research: Can You Get a Construction Loan with Only a 5% Deposit?

Can you get a construction loan with a 10% deposit?

A 10% deposit may give more options than a 5% deposit, but it still depends on the lender and the project.

A lender may review:

• total project cost
• land value
• construction contract
• completed valuation
• borrower income
• savings history
• available cash buffer
• property location
• builder profile
• whether LMI applies

A 10% deposit may still require lenders mortgage insurance if the total LVR is above 80%.

What deposit do you need for a construction loan?

There is no single deposit rule across all lenders.

The deposit needed may depend on:

• land price
• build cost
• total project cost
• completed property value
• lender maximum LVR
• whether LMI applies
• property type
• builder and contract type
• borrower income
• savings history
• available cash buffer

Some lenders may allow high-LVR construction loans for strong borrowers. Others may prefer a larger deposit or more equity.

What is a fixed-price building contract?

A fixed-price building contract is a contract where the builder agrees to complete the work for a set price, subject to any allowed variations or exclusions.

Lenders usually prefer fixed-price contracts because they reduce the risk of cost blowouts.

A lender may check whether the contract includes:

• builder name
• borrower name
• property address
• full build price
• progress payment schedule
• start and completion conditions
• inclusions and exclusions
• specifications
• plans
• signatures
• builder licence details
• contingency or provisional sums

If the contract is not fixed price, the lender may be more cautious.

Related research: Can You Buy Land First and Add a Building Contract Later Under the 5% Deposit Scheme?

What are provisional sums and prime cost items?

Provisional sums and prime cost items are allowances in a building contract.

They can create risk because the final cost may change.

Examples may include:

• site works
• excavation
• landscaping
• driveways
• retaining walls
• flooring
• appliances
• bathroom fixtures
• kitchen fittings
• electrical upgrades

If these allowances are too low, the final cost may increase. The lender may ask whether you have enough funds to cover potential overruns.

What if building costs increase?

Cost increases can cause problems during construction.

If the build cost increases after approval, the lender may need to reassess the loan.

This can happen because of:

• contract variations
• material price increases
• site issues
• weather delays
• upgrades
• council requirements
• builder changes
• underquoted allowances
• unexpected foundation costs
• delays in starting construction

If the lender does not increase the loan, you may need to cover the extra cost from your own funds.

Do lenders allow contract variations?

Some variations may be allowed, but large variations can create issues.

A variation is a change to the building contract after it has been signed.

Variations may include:

• upgraded finishes
• extra rooms
• design changes
• landscaping changes
• increased site costs
• changed materials
• changed fixtures
• additional structural work

The lender may ask whether the variation affects:

• total build cost
• completed valuation
• loan amount
• LVR
• construction timeframe
• borrower cash contribution
• progress payment schedule

If variations are frequent or expensive, the lender may pause payments until the position is clear.

Can you use equity for a construction loan?

Yes, you may be able to use equity from another property to help fund construction.

This may be useful if you already own:

• a home
• investment property
• land
• a property with available equity
• a partly paid-off mortgage

The lender may assess:

• value of the existing property
• current loan balance
• available equity
• total construction cost
• completed value
• income and expenses
• existing repayments
• future repayments
• loan purpose

Using equity can reduce the cash deposit needed, but the full debt still needs to be affordable.

Can you build on land you already own?

Yes, this is common.

If you already own the land, the lender may use the land as part of your contribution.

The lender may review:

• current land value
• whether the land has a mortgage
• land zoning
• land title
• services
• building contract
• completed valuation
• construction cost
• borrower income
• available cash buffer

If the land is owned outright, you may have more equity available. If the land already has a loan, the lender will include that debt in the assessment.

Can you buy land now and build later?

Yes, but the loan structure depends on timing.

Some borrowers buy land first, then apply for a construction loan later.

Others arrange land and construction finance together.

A lender may ask:

• is the land registered?
• when will construction start?
• do you have building plans?
• have you chosen a builder?
• is the land loan separate?
• can you afford repayments before the build starts?
• will the land remain vacant for a long period?
• does the lender accept vacant land?

If you are not building soon, the lender may assess the land purchase separately from construction.

Related research: Does Buy Now Pay Later Affect Your Home Loan Application?

Can you get a construction loan for a house and land package?

Yes, house and land package finance is common.

A house and land package may involve:

• one contract for land and build
• separate land and build contracts
• land settling first
• construction starting later
• progress payments during the build
• government grants or concessions, where eligible

A lender may need:

• land contract
• building contract
• plans and specifications
• builder details
• completed valuation
• deposit evidence
• income documents
• grant evidence, where relevant

If land registration is delayed, the finance approval may need to be updated closer to settlement.

Related research: Can You Get a Construction Loan for Unregistered Land?

Can you get a construction loan for a knockdown rebuild?

Yes, some lenders may finance knockdown rebuild projects.

A knockdown rebuild involves demolishing an existing home and building a new one.

The lender may review:

• current property value
• existing mortgage
• demolition cost
• building contract
• council approvals
• temporary accommodation costs
• completed valuation
• loan amount
• insurance
• borrower ability to cover repayments during the build

The lender may need to understand when the existing dwelling will be demolished and how the property will be valued during construction.

Can you get a construction loan for major renovations?

Yes, major renovations may require construction-style lending.

This may apply where the renovation is structural, expensive or paid through progress payments.

A lender may ask for:

• building contract
• plans and specifications
• council approval
• builder licence
• renovation budget
• valuation before and after works
• evidence of funds to complete
• progress payment schedule

Smaller renovations may be funded differently, such as through equity release, personal savings or a standard refinance.

Can owner-builders get construction loans?

Owner-builder loans can be difficult.

An owner-builder is someone who manages or completes the construction themselves instead of using a licensed builder under a standard fixed-price contract.

Many lenders are cautious with owner-builders because of:

• completion risk
• cost overrun risk
• quality control concerns
• insurance requirements
• valuation uncertainty
• licensing and permit issues
• difficulty managing progress payments
• increased chance of delays

Some lenders may not accept owner-builder construction loans at all. Others may require a larger deposit, more experience and stronger evidence.

What if the builder is not approved by the lender?

The lender may need to be comfortable with the builder.

They may check:

• builder licence
• builder insurance
• company details
• construction contract
• experience
• financial stability
• whether the builder is related to the borrower
• whether the builder has a history of completing similar projects
• whether the contract is acceptable

If the builder is not acceptable, the lender may decline the construction loan or ask for another builder.

Can you use a related builder?

Using a related builder can make the application more complex.

A related builder may be:

• a family member
• your own company
• a business partner
• a related entity
• someone with a close personal connection

The lender may want to make sure the contract is arm’s length and realistic.

They may ask:

• is the contract at market price?
• will normal progress payments apply?
• is the builder licensed?
• are all permits and insurances in place?
• is there any conflict of interest?
• does the completed valuation support the cost?

Some lenders may not accept related-party builder arrangements.

How do lenders value a construction property?

The lender usually orders a valuation based on the completed property.

The valuer may assess:

• land value
• building contract
• plans
• specifications
• location
• comparable sales
• expected completed value
• construction quality
• site characteristics
• market demand

The completed valuation may be lower than the land price plus build cost.

If that happens, the lender may lend against the lower value, which can increase the amount of cash you need.

What if the valuation comes in low?

A low valuation can create a funding gap.

For example, your total project cost may be $900,000, but the completed valuation may be $850,000.

The lender may base the loan on the lower valuation rather than the full cost.

This may mean you need:

• a larger deposit
• more savings
• lower build cost
• revised plans
• another lender
• a different property strategy
• more equity from another property

A low valuation can be especially difficult if you are already at a high LVR.

What documents do you need for a construction loan?

Construction loans usually need more documents than standard home loans.

You may need:

• land contract
• building contract
• plans
• specifications
• builder licence
• builder insurance
• council approval
• fixed-price contract
• progress payment schedule
• deposit evidence
• savings statements
• income documents
• bank statements
• valuation
• grant evidence, where relevant
• land title details
• demolition quote, for knockdown rebuilds
• renovation contract, for major renovations

The lender may not provide full approval until the building documents are complete.

How are repayments made during construction?

During construction, many lenders allow interest-only repayments on the amount drawn down.

This means you only pay interest on the funds that have been released so far, not the full approved construction loan from day one.

For example:

• at land settlement, only the land portion may be drawn
• at slab stage, more funds are drawn
• at frame stage, more funds are drawn
• at completion, the full loan may be drawn

Repayments usually increase as more funds are released.

After construction is complete, the loan may switch to the chosen ongoing repayment structure.

Do you need cash during construction?

Yes, having a cash buffer is important.

Even with an approved construction loan, you may need funds for:

• council fees
• variations
• temporary accommodation
• rent while building
• extra interest during construction
• landscaping
• driveways
• fencing
• window coverings
• appliances not included
• site cost increases
• utility connections
• moving costs

Many build budgets miss items that become real costs later.

Can government grants be used for construction?

Government grants may be available for some new builds, depending on your state, property type and eligibility.

A lender may ask:

• are you eligible?
• when will the grant be paid?
• can it be used toward settlement?
• is it paid after construction starts?
• is it paid after completion?
• does it count as funds to complete?

Do not assume the grant will be available upfront. Timing matters.

Can you rent out the property after construction?

Yes, if the loan is for an investment property and the lender accepts the purpose.

A lender may use proposed rental income based on:

• rental appraisal
• valuation rent estimate
• property manager letter
• market rent evidence
• expected lease

The lender may shade the rent before using it in servicing.

If the property is intended as your home but you later decide to rent it out, tell the lender and check loan conditions.

Can construction loans be fixed rate?

Some lenders may allow fixed-rate loans after construction is complete, but construction periods are often variable.

This is because funds are progressively drawn, and the final loan amount changes during construction.

A lender may allow:

• variable construction loan during build
• fixed rate after completion
• split loan after construction
• interest-only during construction
• principal and interest after completion

Product options depend on the lender.

What happens when construction is finished?

At completion, the lender may need evidence that the build is complete.

This may include:

• final builder invoice
• occupancy certificate
• final inspection
• valuer completion certificate
• insurance evidence
• confirmation all progress payments are complete
• updated loan structure request

Once complete, the loan may roll into a standard home loan or investment loan product.

10 common mistakes with construction loans

1. Do not assume pre-approval means construction is approved.
2. Do not sign a building contract before checking lender requirements.
3. Do not underestimate site costs.
4. Do not rely on a non-fixed-price contract without checking policy.
5. Do not forget cash for variations.
6. Do not assume the valuation will match total project cost.
7. Do not choose a builder without checking lender acceptance.
8. Do not ignore progress payment timing.
9. Do not assume grants are paid upfront.
10. Do not start construction before the loan structure is approved.

How to improve your chances before applying

Before applying for a construction loan, it helps to prepare the build details early.

Useful steps include:

• confirm the land position
• choose a licensed builder
• get a fixed-price building contract
• collect plans and specifications
• confirm progress payment schedule
• check site cost allowances
• prepare a cash buffer
• confirm grants and concessions
• keep savings evidence ready
• prepare income documents
• check valuation risk
• compare lender policy before submitting the application

The more complete the build documents, the smoother the approval process can be.

Should you wait before applying?

Sometimes waiting can help.

Waiting may improve your application if:

• the building contract is not ready
• plans are incomplete
• council approval is pending
• land registration is delayed
• your deposit is still small
• site costs are uncertain
• the builder has not been chosen
• valuation risk is unclear
• grant timing is unknown

But waiting is not always necessary.

You may be ready to apply if:

• the land position is clear
• the builder is selected
• the contract is fixed price
• plans and specifications are ready
• your deposit is suitable
• income is stable
• cash buffer is available
• the lender accepts the construction structure

A broker can compare whether applying now or waiting would give you better options.

Example scenarios

Scenario 1: House and land package

You are buying land in a new estate and building with a licensed builder.

You have separate land and build contracts, and construction will start after land settlement.

The lender may assess both contracts and order a completed valuation before approval.

Scenario 2: Building on land you already own

You own a block of land and want to borrow for construction.

The lender may use the land value as part of your contribution and assess the construction contract and completed value.

Scenario 3: Knockdown rebuild

You own a house and want to demolish it and build a new home.

The lender may review the existing mortgage, demolition plans, building contract and completed valuation.

Scenario 4: Cost increases during construction

Your builder issues variations that increase the build cost.

The lender may not automatically increase the loan, so you may need savings or equity to cover the difference.

So, can you get a construction loan to build a house?

Yes, you may be able to get a construction loan to build a house in Australia.

The strongest applications usually have:

• clear land position
• licensed builder
• fixed-price building contract
• complete plans and specifications
• acceptable completed valuation
• suitable deposit or equity
• stable income
• clean credit history
• cash buffer for unexpected costs
• a lender whose policy accepts construction lending

Construction finance can work well, but it needs to be structured properly before the build starts.

Need help applying for a construction loan?

A mortgage broker can help compare lenders that may offer construction loans for house and land packages, knockdown rebuilds, major renovations and building on land you already own.

We can review your land position, building contract, deposit, valuation risk, income and borrowing position before you apply.

If you are planning to build, speak with a mortgage broker before signing a building contract or committing to settlement dates.