Building your own house, or doing a major renovation, is a great way to get exactly what you want in a home. 

But building can be a complex process, and it’s easy to get overwhelmed by everything you need to do to get from a bare patch of land to a finished home. This guide will help you through the complex process of home building and obtaining a construction loan. We’re here to help you build the home you want, and there’s a lot more to it than just lending you the money.

Our guide to building your home

If you’re thinking of building or doing a big renovation, be aware that you’re embarking on a project that will normally take around six to 12 months to complete.

Before you take the first step you should ask yourself a few questions to make sure you’re making the right decision.

When making this decision, here are some things to consider:

Your location

Do you like where you live or do you want to move somewhere new?

Your home

Do you want to re-model or expand your existing home, or start from scratch with your own special design?

Your budget

How much money do you already have, and how much would you need to borrow?

Your land

Is your block big enough for what you want and in the right location?

Your time

How much time do you have to dedicate to building or renovating?

Your timing

Looking at the housing market, is this a good time to build or renovate?

Answering these questions will help you decide whether to:

  • buy another established home
  • renovate your existing home
  • knock it down and build a new one
  • buy a block of land elsewhere and build a new home.

Download our Guide to Residential Construction Loans for more tips

Our free Construction Loan Guide takes you through the process of building a home and applying for a construction loan. It gives you:

  • an overview of the stages of construction
  • information on the roles of the builder, the bank, the council and you
  • a series of simple steps to follow to get your home built
  • checklists to help you get everything ready for each stage of your project.

We’re here to help you build the home you want, and there’s a lot more to it than just lending you the money.

Step 1: Planning your build

1. Do your research

Building and renovating can be complex. The more you know in advance, the fewer surprises you’re going to encounter along the way, and the better the outcomes will be from the decisions you make.

2. Choose a builder and get quotes

Some builders are better than others, so choosing the right one is critical. Lots of unexpected things can happen in the six to 12 months it might take to build your home.

To reduce these risks, take your time choosing both the design and the builder of your new home. If you’re using your own plans, get quotes from at least three licensed builders. 

3. Arrange plans and contracts

Once you’ve found a reliable builder, you need to arrange the project plan and the contract. 

  • The project plan

The builder will review your design and provide a project plan showing the building stages, timeline and costs. Check this carefully, because once you agree to it the builder won’t deviate from it. If you want to make changes later this will probably create more costs.

  • The contract

While the plan explains what the builder will do and how, the contract defines the terms under which they’ll do it. It covers important aspects such as the timeline for completion, the cost, allowances for delays due to weather and so on.

The Housing Industry Association (HIA) and the Master Builders Association (MBA) have standard, pro forma construction contracts that are accepted throughout the industry, but you should still ask your solicitor to review the details in the building contract and advise you on its terms. 

4. Check your builder’s insurance

Depending on your State or Territory, your builder must have a Builder’s Insurance policy for all building works greater than a certain value, which includes public liability insurance.

Discuss this with your builder, and before you sign the building contract make sure they have an insurance policy that covers the whole construction period until the building is finished. To find out more about this, contact the Fair Trading or Consumer Affairs department in your State or Territory.

5. Get your plans approved

Before you sign your contract or start any work on your construction, you need to have the all the required approvals in place. A new home generally requires three types of approvals: Council approval, a Development Application, and a Construction Certificate. If you’re renovating you may not need all of these. Your council can tell you which ones apply.

Step 2: Arranging your finances

Building or renovating your home is one of the biggest financial decisions you’ll make, so you need to know that your loan will meet your building needs, and how to get the most out of it. 

How a construction loan works

A construction loan is basically a home loan with the flexibility to make progress payments as the builder completes each building stage.

Instead of lending you the whole amount upfront, we pay the money directly to your builder as they complete each stage of the construction process.

Because we’re in charge of paying the builder, we can do inspections and ensure that they’ve done the work.

View more about our Construction Loan here

One loan or two?

If you already have plans and a builder ready to go, you can take one loan to cover both the land and the construction. If you’ve found your land but haven’t organised a builder yet, you might want two loans: one to buy the land now, and one to pay for the construction later.

Step 3: Start building your home

When we have all the documents we need and we’ve approved your loan, we’ll write to you to let you know you’re good to go. 

Plan to start within six months

You must start building within six months of the date of offer as set out in  your schedule. If you haven’t started by then, we may need to re-assess your loan application because your circumstances may have changed.

Using your own savings first

If you’re contributing your own savings to the construction, your money will be used first to pay the builder, before using the loan.

We’ll agree how much you’re going to contribute when you apply. You can either pay the builder yourself and send us copies of the invoices, or deposit the money with us and we’ll use it to pay your first progress payment.

Remember: if you decide to pay the builder yourself, it’s important to get a copy of an invoice and receipt for every payment you make.

Upfront deposits

Your builder may ask for an upfront deposit to pay for the materials they need to start building. We can provide money from the loan for the builder’s deposit if:

  • if you already have a land loan with us
  • you’ve used all of your own savings
  • the builder’s deposit was included in the Progress Payment Schedule
  • we have all the construction and loan documents we need; and
  • you’re ready to start.  

  • Changes to the contract

    If the price of the original building contract changes for any reason before you start or while you’re building, you need to give us written evidence of the change.

    If the change is significant we may need to do a new valuation at your expense.

  • Changes to your approved plans

    If you’re planning to make any changes to council-approved plans, you need our consent before you change anything. This is because if the change is significant, we may need to do a new valuation (which will be at your expense).

    If this means that we need to change the loan amount, we’ll re-assess your loan application. If we agree to the change we’ll send you a revised Loan Offer.

  • Changing the builder

    If you decide to change builders, you need to let us know and send us these details:

    • a copy of the signed and dated building contract with the new builder
    • confirmation that there are no changes to the original plans and specifications
    • a copy of the new Builder’s Insurance policy any legal documentation about the original builder, such as a termination of their contract.

    We may need to do a new valuation before we approve the new builder.

Step 4: Keep on top of progress payments and valuations

Not every building project goes according to plan, but knowing exactly what you’re committing to upfront can help avoid costly mistakes.

Know your contract

Study the inclusions in your building contract carefully. Does it include things such as landscaping, retaining walls and driveways? If not, you may run the risk of cost and time overrun. If something isn’t listed in your contract, don’t just assume it will be built.

Know your budget

Examine your budget carefully. You need enough money to cover all the known expenses and still have some left over for unexpected costs.

We only make progress payments as agreed in the payment schedule of your building contract. You’re responsible for paying any other costs from your own money, and we won’t make any further progress payments until you’ve paid them.

If you think you’re going to go over your anticipated budget, speak to us as soon as you can. 

Step 5: Repaying the construction loan


While you’re building and we’re making progress payments, your loan is interest only, so your repayments only pay off the interest on the loan, not the principal (the amount you borrowed). These repayments won’t reduce the amount you’ve borrowed.

We only charge interest on the loan balance, which is the total of the amounts we’ve paid to the builder. This means that as your builder completes each stage and we make a progress payment, we’ll be charging interest on a progressively higher amount, so your repayments will increase with each stage.

Your monthly repayment amounts will also vary depending on the number of days in the month, and if we make a progress payment in that month.

While the amount may change, we’ll always deduct your repayments on the same date each month (except the final payment, see below).

Step 6: Building completion


On the day we make the last progress payment we’ll also deduct the last interest only payment from your account.

This may not be on the same date as the other deductions, so check with us and make sure you have enough money in your account to cover this last payment.

Once we make the last payment to the builder, your loan changes to the agreed repayments shown in your loan offer. Unless you’ve made other arrangements with us, this typically means you start paying principal and interest repayments.

Making the last payment

When your home is complete, the builder will give you a Certificate of Completion and the final invoice to pass on to us. Once we receive these we’ll do our final valuation.  

Before we make the last payment we need:

  • a Certificate of Completion from the builder
  • a Building Insurance Certificate of Currency
  • a Certificate of Compliance or Occupancy from your council.

Our most popular loan for building a home

Our most popular low rate loan, packed with features

Clear Path Variable Home Loan

If you're looking for a fully featured, cheap home loan with a low rate, our Clear Path Variable Rate Home Loan is for you!

  • Owner occupier and investor options available
  • Mortgage offset
  • Unlimited free redraw and flexible repayments

Home building FAQs

  • What’s the difference between a fixed-price and cost-plus contract?

    A fixed price contract is where the builder has agreed to complete the building works for an agreed fixed amount.

    A cost-plus contract is where the builder agrees to complete specific work for an amount, but the contract contains rise and fall clauses, which allow them to charge for increased labour or material costs. Generally these are provided for contracts over $1 million. Speak to us to find out if your cost-plus contract is acceptable. 

  • Will I need a construction loan every time I want to renovate my property?

    No, you don’t always need a construction loan with progressive drawings. For example if you want to upgrade your kitchen or bathroom, or make cosmetic changes like new flooring or painting your home, you may be able to apply for a Top Up to your existing home loan, and we’ll lend you the additional amount required in one lump sum.

    Ask us or your broker about whether you need a construction loan and how we can help you with your renovation project. 

  • Can I change the number of progress payments?

    Yes, but we need to review and agree to this change, so if you want to do this, let us know as soon as possible. 

  • What if I’m not happy with the work and don’t want to release any progress payments?

    The first thing to do is speak to your builder and see if they can complete the work to your satisfaction. If you’re still not satisfied, you should follow the dispute resolution process for your State and tell us as soon as you do this.

    Don’t send us a request for a progress payment until you’re happy with the work that’s been done. 

  • Does the bank have to approve my choice of builder?

    No, but the builder must be licensed, and you should ensure that they’re a reputable builder. 

  • Can I use a construction loan to renovate my unit or apartment?

    Yes you can, subject to normal approvals. 

  • Can I get extra money to build a swimming pool and fencing?

    Yes, you can include this in your construction loan application. 

  • What happens if my builder can’t start within six months of my loan being approved?

    In this situation speak to us, because we may need to re-assess your application in case your circumstances have changed.  

  • Is it okay to change the plans or make upgrades once the building has started?

    Yes, but you need to let us know as soon as possible. If the change is significant we may need to do a new valuation at your expense. If the cost increases, you'll need to tell us whether you're covering the cost of the changes or you need to borrow more money. If you need to borrow more we'll have to re-assess your loan and we'll need written evidence of the change.

  • What happens if the builder goes bankrupt?

    Residential construction in Australia is usually covered by mandatory insurance that protects you if a builder goes into administration. The process for claiming this insurance varies with the State or Territory.

    You may need to make a claim through the insurer, who will appoint a building consultant to inspect your partially-completed home. They’ll provide:

    • a scope of works defining what still needs to be done and the likely cost
    • a schedule of items of defective work they recommend needs to be fixed.

    The insurer may then put out a tender for approved builders to quote to do this work. The builder awarded the tender will then complete your home.

    If this means that we need to change the loan amount, we’ll re-assess your loan application. If we agree to the change we’ll send you a revised Loan Offer.

Ready to get started?

We’re here to answer any questions you may have.

Get started online

Enquire now

Chat to us

Helpful hints: Building or renovating

Here are some useful articles if you’re looking to build or renovate a property

Building In An Estate Vs Suburb; Which Is Right For You?


Read more

3 Home Improvements That Will Make A Difference


Read more

The Rise In Popularity Of Home Renovations In Australia


Read more