WA Owner‑Builder Insurance and Home Indemnity Insurance

Insurance is one of the most misunderstood parts of being an owner‑builder in Western Australia. Many people focus on plans and permits, but forget that if something goes wrong on site—or if they decide to sell the property—insurance can make the difference between a manageable problem and a financial disaster.

This guide explains the main types of insurance WA owner‑builders should think about, how they fit into your approvals and building permit, and where Home Indemnity Insurance may come into the picture.

Why insurance matters for WA owner‑builders

As an owner‑builder, you are taking on responsibilities that a registered builder would usually carry. That means you are more exposed if someone is injured, if property is damaged, or if the work is faulty or incomplete.

Good insurance planning helps to:

• Protect you financially if something happens on site

• Protect visitors, neighbours, and trades

• Support compliance if you decide to sell within a certain period after construction

• Give buyers and lenders more confidence in the finished home

Think of insurance as part of your risk‑management toolkit, alongside good planning, qualified trades, and proper documentation.

The main types of insurance to consider

Every project is different, but most WA owner‑builders should at least think about the following types of cover:

• Construction or contract works insurance – to cover damage to the works, materials, and sometimes existing structures during construction

• Public liability insurance – to cover injury or property damage to third parties (for example, if a visitor or neighbour is injured)

• Home and contents insurance – adjusted to reflect that building work is happening

• Income protection or life cover – personal cover if your ability to earn is affected

• Home Indemnity Insurance – in specific circumstances, particularly when a property is sold within a certain timeframe after building

You may not need every policy in every situation, but you should make a deliberate decision about each one, not leave it to chance.

Construction / contract works insurance

Construction or contract works insurance is designed to cover the building work itself while it is being carried out. Depending on the policy, it can cover:

• Damage to the new work from events like fire, storm, vandalism, or theft

• Loss or damage to materials on site

• Sometimes damage to existing structures affected by the works

For owner‑builders, this is often the backbone of project insurance. It fills the gap between your normal home insurance (which may not cover major building works) and the risk of something happening before the project is completed.

Questions to ask when you get quotes:

• What exactly is covered, and what is excluded?

• Does the policy cover the full estimated project value?

• How long does the cover last, and when does it end?

• How does it interact with any cover your trades may carry?

Public liability insurance

Public liability insurance covers claims made by third parties for injury or damage caused by your project activities. For example, if a visitor trips over materials on site, or debris damages a neighbour’s property, public liability cover can help handle the financial consequences.

As the person in control of the site, an owner‑builder is a central figure if something goes wrong. Public liability should be treated as essential, not optional, especially where friends, family, or neighbours may visit the site.

Practical tips:

• Check whether your construction policy includes public liability or whether it is separate.

• Make sure the limit of indemnity (for example, $5 million or $10 million) is appropriate for the scale of your project.

• Confirm whether work outside standard site hours or access by others is covered.

Your existing home and contents insurance

If you already own and occupy the property, talk to your existing home and contents insurer before you start work. Many standard policies:

• Exclude cover while major building work is underway

• Require you to notify them of renovations above a certain value

• May offer different terms or require additional information

Be transparent about your plans. It is better to adjust your cover than to discover, after a fire or storm, that the insurer considers the policy void because of undisclosed building work.

Home Indemnity Insurance: when it may apply

Home Indemnity Insurance is a specific type of cover that protects homeowners (and sometimes subsequent purchasers) against financial loss if a builder dies, disappears, or becomes insolvent and cannot complete the work or fix defects.

For owner‑builders, the rules are different from those for registered builders, and they can be confusing. The key points to understand are:

• In some circumstances, owner‑builders may be required to take out Home Indemnity Insurance if they sell the property within a set period after completion.

• Even where it is not strictly mandatory, providing appropriate cover or disclosures can make a property more attractive and reduce buyer concerns.

• Requirements can depend on the value of the work, the type of construction, and how soon after building you intend to sell.

Because the details and thresholds can change, you should confirm the current expectations with your local authority, Building and Energy WA, or a broker who regularly deals with owner‑builder projects.

Insurance and your Certificate of Title

Your Certificate of Title is mainly about proving ownership, but it also interacts with insurance and risk in a practical way:

• Insurers will usually want to know who owns the property, and the names on the title should align with those on the policy.

• If you are buying the land, your contract of sale and eventual Certificate of Title define when your interest (and financial exposure) starts.

• When you sell, the title, building records, and any Home Indemnity Insurance documents create a paper trail that buyers and their lenders may rely on.

Keep title documents together with your insurance policies, owner‑builder approval, and building permit so you can see the full picture in one place.

Working with trades and their insurance

Even when trades have their own insurance (for example, professional indemnity or their own public liability), that does not replace your responsibility as an owner‑builder. You should:

• Ask each trade for proof of current insurance and any licences needed for regulated work

• Keep copies of certificates of currency in your project folder

• Make sure contracts clearly state who is responsible for what, and what insurance they hold

A good rule of thumb is that every major trade who steps onto your site should be able to show both their licence and current insurance documents on request.

When to organise insurance (timing)

If you leave insurance until just before work starts, you may find that some options are more expensive or harder to arrange. Instead:

• Start discussing cover once your project scope and budget are reasonably clear

• Have construction and public liability insurance arranged before any physical work begins on site

• Review your cover again if the scope or value of the project grows significantly during the build

• Revisit the question of Home Indemnity Insurance if you decide to sell within a few years of completion

Think of insurance as something you set up alongside approvals and permits, not as an afterthought.

Questions to ask an insurer or broker

When you speak to an insurer or broker experienced with owner‑builder projects in WA, take this short list of questions:

• What types of cover do you recommend for my project and why?

• What events and losses are covered, and what is definitely excluded?

• How does this cover interact with the insurance held by my trades?

• What triggers a claim, and what documentation would you need from me?

• What happens if I decide to sell the property soon after finishing the build?

Clear answers to those questions will help you compare policies and avoid surprises.

Bringing it all together

Insurance won’t build your home or manage your trades, but it will protect you when things do not go to plan. As a WA owner‑builder, it is worth:

• Treating insurance as a core part of your project planning

• Making sure your Certificate of Title, approvals, permits, and policies all “tell the same story”

• Getting advice early, rather than after something has gone wrong

From here, you may want to read:

• WA Owner‑Builder Checklist: 25 Essential Steps Before You Start – to ensure insurance sits in the right place in your overall plan

• Owner‑Builder Approval vs Registered Builder in WA – to sense‑check whether acting as your own builder still makes sense once you factor in risk and cover

These guides together will help you balance control, cost, and protection as you plan your build in Western Australia.