Most renovations do not fail because of one big mistake. They fail because of small things missed early. A budget with no room for surprises. A council rule nobody checked. A contract that never actually got signed. This checklist walks through every stage of a typical Australian renovation, from your very first planning conversation through to the day it is finished, so nothing important gets missed simply because nobody thought to ask.
Stage one: Planning Stage two: Design and approvals Stage three: Contractor selection Stage four: During construction Stage five: Completion Ready to start your renovation with the right professional Frequently asked questions.
Contents
1. Stage one: Planning
2. Stage two: Design and approvals
3. Stage three: Contractor selection
4. Stage four: During construction
5. Stage five: Completion
6. Ready to start your renovation with the right professional
7. Frequently asked questions
Stage one: Planning
This is where most renovations quietly succeed or fail, long before a single trade turns up on site. Start by writing down exactly what the renovation needs to achieve, since a vague scope tends to grow in cost and complexity once someone starts pricing it, and check early whether any walls you want removed are load bearing.
Set your total budget, then set aside at least 15 percent on top for the unexpected, since older homes especially tend to reveal surprises once walls or floors are opened up. Our full renovation cost guide and extension cost guide are worth a read before you lock in a number.
Ask your local council what zoning and planning rules apply to your property, and check whether it is heritage listed or sits in a heritage conservation area, since both affect what you are allowed to build and how. Arrange a professional building inspection before you commit to a final scope and budget, particularly if you have recently bought the property. And be honest with yourself about why you are actually renovating, whether that is future proofing for retirement, adding space, improving energy efficiency, or simply updating tired finishes, since this shapes almost every decision that follows, along with when in the year makes sense to start.
Stage one checklist
Stage two: Design and approvals
Once you understand what you want to achieve, the next step is turning those ideas into a design that can actually be built.
A simple written brief is a good place to start. It should cover what you want to change, your approximate budget, your must-haves and any known limitations of the site or existing house.
Take time to review the first design ideas before moving ahead. Changes are generally much easier to make while the project is still on paper than once detailed drawings, approvals and construction have begun.
You will also need to understand what type of approval your renovation requires. Some projects need a development application through the local council, while others may qualify for a different approval pathway, such as a complying development certificate in states where this is available.
Your architect or building designer should be able to help you understand which process applies to your project, but it is worth confirming this early rather than assuming the work will be exempt.
Structural changes may also require an engineer. This could include removing a wall that supports the house, changing the foundations, or adding another storey. Check whether this work is included in your designer's services or whether you will need to engage an engineer separately.
Stage two checklist
Stage three: Contractor selection
Choosing the right builder deserves just as much care as choosing the right designer.
Start by checking that the builder holds the licence required for the type and value of work you are planning. The rules differ between states, so use your state building authority or fair trading body to confirm what applies.
Insurance requirements also vary between states, so it is important to check what applies to your project. Depending on the type of work, your builder may need specific registration, insurance and a formal domestic building contract.
Ask your builder what insurance they hold and request proof where appropriate. It is also a good idea to contact your own home and contents insurer before work starts so they know the property is being renovated and can explain whether your existing cover changes during construction.
When comparing builders, try to obtain at least three detailed written quotes based on the same drawings and scope. This makes it much easier to see whether one quote is genuinely cheaper or simply leaves out work that another builder has included.
Once you choose a builder, make sure the agreement is in writing. The contract should clearly explain what work is included, what it will cost, when payments are due and what happens if something changes during construction.
Those changes are often called variations, but in simple terms they are any changes to the work, cost or timing that was originally agreed.
For larger or more complex renovations, you may also choose to have a building lawyer review the contract before you sign. Be aware that this can affect the standard cooling-off period in some circumstances, so ask for advice about what applies to your agreement.
Stage three checklist
Stage four: During construction
Once work begins, staying informed can help prevent small misunderstandings from turning into larger problems.
Before construction starts, agree on practical details such as when trades can access the property, expected working hours and how deliveries will be handled. This becomes particularly important if you plan to remain in the home during the renovation.
There will also be key points during construction when parts of the work need to be inspected before they are covered up. This might happen after foundations are completed or before wall linings are installed.
Different stages of construction may need to be inspected before work is covered. Confirm who is responsible for arranging each required inspection and ask for copies of the resulting records or certificates.
Mandatory inspections do not necessarily assess every aspect of workmanship. Depending on the project, you may also consider engaging an independent building inspector to review the work at agreed stages
If you decide to change something during construction, make sure the change is written down before the work goes ahead. The record should explain what is changing, how much extra it will cost and whether it will affect the completion date.
A quick verbal agreement can be easy to forget or misunderstand. Having the details in writing gives both you and the builder something clear to refer back to.
Stage four checklist
Stage five: Completion
The final stage can be easy to rush, especially when you are keen to move back in and start using the finished space.
Before making the final payment, walk through the renovation carefully and write down anything that appears unfinished, damaged or different from what was agreed.
Your contract may include a period after completion when the builder is responsible for addressing agreed defects. Recording issues clearly at the end of the project makes it easier to have them resolved within that period.
You should also collect the final documents and certificates relating to the work. Depending on the project, these might include approval to occupy the completed space or certificates confirming that structural, electrical or other work meets the required standards.
Keep these documents together with your contract, approved drawings and other renovation records. They may be useful later if you sell the property, make an insurance claim or carry out further work.
Stage five checklist
Ready to start your renovation with the right professional
Getting this checklist right starts with having the right architect, building designer or interior designer on board from the very beginning.
CO-architecture connects homeowners with a vetted network of independent professionals across Australia, matched to the scale and nature of your specific project, so you can move through planning and design with confidence instead of guesswork.
Frequently asked questions
How much contingency should I budget for a home renovation in Australia?
At least 15 percent on top of your total budget is a widely used benchmark. Older properties, or projects involving structural changes, may need a bigger buffer given how much more likely unexpected issues are once work begins.
Do I always need council approval to renovate my home in Australia?
Not always. Some minor renovations fall under exempt or complying development categories and do not need a full development application, though what qualifies varies by state and council. Confirm your specific pathway early. That way you avoid unnecessary delays or, just as bad, proceeding without approval you actually needed.
What is the difference between a development application and a complying development certificate?
A development application is assessed individually by your local council against its own planning scheme, and can take longer if your project varies from standard controls. A complying development certificate, available in some states for projects meeting a fixed set of standards, is usually assessed faster by an accredited certifier instead of council. Not every project qualifies for the faster option, so check this against your own scope and site.
What should I check before hiring a builder for my renovation?
Confirm their licence is current and covers the scope and value of your project. Ask for proof of insurance, including home warranty insurance where it applies. Get at least three written quotes for identical scope. And always use a written contract, never a verbal agreement, no matter how small the job.
Ready to get expert guidance on your renovation
Still working out the right scope, budget or professional for your renovation? Our detailed renovation cost guide and extension cost guide are a good next step. And CO-architecture can match you with an experienced architect, building designer or interior designer to help turn this checklist into an actual plan for your home.
