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WA Owner‑Builder Checklist: 25 Essential Steps Before You Start

  • Writer: Stephanie Boyce
    Stephanie Boyce
  • 6 days ago
  • 4 min read

Updated: 5 days ago

Becoming an owner‑builder in Western Australia is a big commitment. It can give you more control and potential savings, but it also makes you responsible for compliance, safety, and the quality of the build. This checklist walks you through the key decisions and tasks to tick off before you start work on site.

Use it alongside your other WA guides as a practical, one‑page view of what needs to happen and in roughly what order.

Part 1: Decide if owner‑building is right for you

  1. Clarify your project scope.Write a short description of what you want to build or renovate, including rooms, structural changes, and any extra structures like garages, sheds, decks, or granny flats.

  2. Estimate the total project value.Add up materials, labour, and associated works to get a realistic estimate. In WA, if the value exceeds common thresholds (around $20,000 for many residential projects), owner‑builder approval or a registered builder is normally required.

  3. Check your time, skills, and stress tolerance.Decide if you’re comfortable coordinating trades, solving problems, and making decisions under pressure. If not, a registered builder may be a better fit.

  4. Discuss the plan with your family or co‑owners.Make sure everyone who will live in the home—or is on the title—understands the commitment and the likely impact on time, finances, and lifestyle.

Part 2: Confirm eligibility and rules

  1. Confirm you’re eligible to be an owner‑builder in WA. Check that you are an individual (not a company), own or have an interest in the property, intend to occupy or use it, and meet the six‑year rule on previous owner‑builder approvals.

  2. Get a current Certificate of Title or contract of sale. Order or download an up‑to‑date Certificate of Title (or keep your contract of sale handy if settlement is still in progress) so you can prove your interest in the property when you apply for owner‑builder approval and your building permit.

  3. Check the project type is allowed. Make sure your project fits within the types of work owner‑builders can do (typically houses and associated residential structures, not larger commercial projects).

  4. Understand the “one project every six years” limit. Note that you generally cannot get owner‑builder approval again within six years without special approval, so treat this as a major, long‑term decision rather than a repeat strategy.

Part 3: Education, safety, and preparation

  1. Complete a WA owner‑builder course. Enrol in an approved WA owner‑builder course and keep your completion certificate to support your application and demonstrate your knowledge.

  2. Obtain or update your White Card. Make sure you hold a valid construction induction card (CPCWHS1001) if you will be on site.

  3. Learn the basics of the approvals process. Familiarise yourself with owner‑builder approval, building permits, and mandatory inspections in WA so you understand who does what and when.

  4. Start a project folder. Create a digital or physical folder with sections for approvals, plans, contracts, quotes, invoices, and insurance. Place your Certificate of Title or contract of sale at the front so it’s easy to find when you complete forms or speak with councils and lenders.

Part 4: Plans, budget, and finance

  1. Develop concept plans and a rough design. Gather ideas, photos, and sketches, then work with a designer, draftsperson, or architect to turn them into workable plans.

  2. Get an initial cost estimate. Use your plans to obtain a cost estimate, either through your designer, a quantity surveyor, or an experienced builder, so you know whether your budget is realistic.

  3. Confirm financing and cash flow. Check that you have enough funds and contingency (often at least 10–15%) to cover overruns, and understand how your lender views owner‑builder projects.

  4. Decide how much work you’ll DIY vs hire out. Make a list of tasks you can realistically do yourself and those you will outsource. Remember that many trades must legally be completed by licensed professionals.

Part 5: Owner‑builder approval checklist

  1. Gather documents for owner‑builder approval. Prepare:

    • A current Certificate of Title or contract of sale

    • Proof of identity

    • Your owner‑builder course certificate

    • A description of the proposed building work and estimated value

    • Any other documents requested in the current application form

  2. Complete the owner‑builder approval application. Fill in all sections accurately, ensuring all owners sign where required, and attach supporting documents. Use any checklist attached to the form so nothing is missed.

  3. Pay the application fee and submit. Lodge your application through the current channel (online, post, or in person) as directed, and keep a copy of everything you submit.

  4. Wait for approval before proceeding. Allow time for processing and do not assume approval is granted until you have formal confirmation. Plan your timelines with this delay in mind.

Part 6: Building permit, trades, and insurance

  1. Prepare your building permit application. Once owner‑builder approval is granted, work with your designer or building professional to finalise plans and submit them to your local council for a building permit. Attach your owner‑builder approval and any title documents they require.

  2. Confirm mandatory inspections and local requirements. Ask your local government about required inspections and any local planning or health rules that apply to your project.

  3. Plan your insurance cover. Talk to an insurer or broker about construction insurance, public liability, and, where relevant, Home Indemnity Insurance—especially if you may sell the property within a set period after completion.

  4. Start lining up licensed trades. Identify and speak with licensed electricians, plumbers, and other trades you’ll need. Check licences, insurance, and references before you commit.

Part 7: Site setup and record‑keeping

  1. Set up your site documentation and tracking system. Prepare a simple site safety plan, keep printed copies of approvals (including your owner‑builder approval and building permit) on site, and arrange any required signage. Use a spreadsheet or project management tool to track tasks, dates, quotes, variations, payments, and inspections.

Using this checklist

You don’t need to complete every item in one go. The key is to move through the checklist in order:

  • First decide whether owner‑building is right for you

  • Then confirm you’re eligible and have your Certificate of Title or contract of sale ready

  • Then work through approvals, permits, trades, and insurance

As you refine your plan, pair this checklist with your other WA resources:

  • Owner‑Builder in Western Australia: Rules, Steps, and Requirements – overview and responsibilities

  • How to Become an Owner‑Builder in WA – detailed process

  • WA Owner‑Builder Insurance and Home Indemnity Insurance – insurance deep dive

  • Owner‑Builder Approval vs Registered Builder in WA – to test whether owner‑building is still the right call

This list is designed to make sure the critical pieces are not missed before you break ground.

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