The Owner Builder Journey

1. Defining the Owner Builder Role

In Victoria, there are two main ways to carry out building work: you can either hire a registered builder with the right licence for your project or take on the role yourself as an owner-builder.
Most types of domestic building work can be done by an owner-builder, but there are a few important exceptions.
You cannot carry out restumping or subfloor work beneath an existing building, as this type of work is considered high risk and requires specialised equipment and experience.
You also cannot completely demolish a structure, although partial demolition is usually allowed when it forms part of a larger building project.
In some cases, your building surveyor may place further limits on the work you can carry out, particularly for higher-risk activities like roof propping, depending on your experience and the nature of the project.
Owner-building is only allowed for homes you intend to live in, meaning you can’t use this pathway for investment properties, duplexes, or unit developments.

2. The Opportunities of being an Owner Builder

Taking on an owner-builder project can be both rewarding and demanding, offering you a high level of control over the outcome.
You will oversee managing the entire project, including legal requirements, budgeting, timelines, and coordinating trades.
For many people, this becomes a full-time commitment, as you are effectively stepping into the role of a builder and project manager.
In our experience, most owner-builders fall into one of two broad groups.
The first are those who want complete control over every detail and are focused on achieving the highest possible quality outcome.
The second are those who prefer to manage the process themselves after lacking confidence in handing full control over to others.
While everyone’s circumstances are different, all owner-builders share a strong desire to create a home that meets their expectations, often investing significant time and energy into the process.
Although some cost savings are possible, it’s important not to see this as the main motivation, as registered builders often have access to better pricing on labour and materials.
Where owner-builders can benefit is in the flexibility to source materials and explore alternative construction approaches, including newer building systems and imported products that may offer savings or unique outcomes.

3. Preparing for an Owner Builder project

In Victoria, most owner-builders will need to obtain an Owner Builder Certificate of Consent from the Victorian Building Authority (VBA) / Building & Plumbing Commission (BPC) before starting work.
This involves a few key steps.

First, you complete an online eLearning assessment, which is free and typically takes around 4–6 hours to finish.

As part of this process, you’ll also need to complete a White Card course (construction safety training) through a registered provider.

Once these are done, you can apply for your Certificate of Consent by submitting your title documents, a basic description of your project, and your completed assessment certificate.

It’s important to understand that completing the eLearning does not automatically give you your Certificate of Consent—you must apply for it separately.
Timing also matters, as the certificate is only valid for 12 months.

For this reason, it’s usually best to first get your plans and documentation underway and then apply for your certificate when you’re a few months away from lodging your building permit. Here’s a full list of documents you’ll need for a typical owner-built dwelling building permit in Victoria:
• Planning approval or written planning advice from council (this step can take time, so it’s worth starting early)
• Legal Point of Discharge (Regulation 133)
• Property Information (Regulation 51(2)) – Ensure you get 51(2), not 51(1) or 51(3). This is the one for termites, flood prone land and so forth.
• Soil Report
• Architectural Drawings including a Site Plan
• Energy Report
• Structural Drawings (sometimes broken into two sets, building and foundation), computations & R126 Certificate of Compliance
• Title documents (Register, Plan of subdivision, any section 173 instruments, covenants or caveats on title, any owners corporation statement as applicable)
• Owner Builder Cost of Works Breakdown
• Owner Builder Certificate of Consent
• Bushfire Attack Level (BAL) Assessment as required
Rural or unserviced blocks or may also require:
• Regulation 132 permit to install a septic & accompanying Land Capability Assessment (from a Geotech engineer)
• Performance solution for charged stormwater system feeding a rainwater tank (civil engineer or consultant building surveyor)
• Details of any off-grid power system applicable
• Details of your proposed water supply including tank sizing, pumps & filters

This list isn’t exhaustive, but having these documents in place will usually mean you’re close to being ready to apply for a building permit. From there, your building surveyor, designer, or engineer may request minor updates or clarifications to ensure everything complies with the relevant regulations.

4. Pitfalls and Common Concerns

One of the most misunderstood parts of owner building is the “five-year rule,” and it’s important to understand what it actually means.
A common misconception is that you can only complete one owner-builder project every five years, but that’s not quite correct.
In reality, you can carry out multiple owner-builder projects on the same property, as long as you own and live in that home.
The restriction applies if you move—once you complete and sign off a project at one property, you generally can’t start a new owner-builder project at a different property until five years have passed.
There are limited exceptions for hardship cases, but these are difficult to qualify for and assessed on a case-by-case basis by the VBA or BPC.
The purpose of this rule is to ensure the owner-builder pathway is used for genuine home projects, rather than ongoing property development.
Another common mistake is assuming you can manage an owner-builder project in your spare time.
In reality, coordinating trades, ordering materials, managing approvals, and dealing with day-to-day issues can easily become a part-time or full-time job for the duration of the build.
Even with careful planning, most projects experience unexpected costs such as site conditions, design changes, or material price increases.
Without a contingency buffer, these small issues can quickly escalate into serious financial pressure and project delays. This is worsened by the difficulty arranging finance for Owner Builders with most Australian lenders quite reluctant to provide funding for open ended projects.
Certain work such as electrical, plumbing, and gas must be conducted by licensed professionals.
Attempting to do this yourself can lead to compliance issues, insurance problems, and difficulty obtaining final sign-off. Compliance certificates are mandatory for electrical and all plumbing matters to obtain your Certificate of Occupancy, ensure this work is done by licensed and registered professionals.

5. Managing Trades and Subcontractors

Managing trades and subcontractors is one of the most hands-on parts of being an owner-builder.
You are responsible for sourcing materials, engaging contractors, and making sure everything happens in the right order.
This starts with getting clear quotes and confirming that any required trades are properly registered.
You should always have written agreements in place that clearly set out scope, cost, and expectations before work begins. Without this, small misunderstandings can quickly turn into bigger issues later.
You are effectively acting as both the client and the builder. This means you need to set clear expectations around quality, timing, access, and sequencing from the beginning.
Delays are a normal part of construction and should be expected. These can be caused by weather, material supply issues, trade availability, or changes to the project.
Because of this, it’s important to allow buffer time in your program. Trying to run a build on tight or fixed deadlines often leads to stress and poor decision-making.
Keeping good records of conversations, changes, and instructions will protect you if problems arise.
Construction timelines are rarely exact, so it’s important to stay flexible and focus on keeping the project moving forward.

6. The Design Journey

The design journey is where your ideas start to take shape and become a buildable, compliant project.
Most owner-builders begin by engaging either a building designer or an architect to develop concepts and prepare drawings.
In Victoria, architects must be registered with the Architects Registration Board of Victoria (ARBV), and only registered practitioners can legally use the title “architect.”
Building designers and draftspersons can also undertake this role, but they must be registered with the Building and Plumbing Commission (BPC) as a building practitioner, typically in the Building Design (Architectural) class, known as DP‑AD.
These professionals manage developing plans, coordinating design intent, and preparing the documentation needed for permits and construction. As your design develops, you will typically engage a range of other consultants to ensure the project is compliant and buildable.
An energy rater will assess your design to meet minimum energy efficiency standards and produce the required energy report for your building permit.
A structural engineer and, where needed, a civil engineer will provide engineering designs for footings, framing, drainage, and other critical elements of the build.
In Victoria, engineers providing professional engineering services must be registered under the Professional Engineers Registration Act 2019, often referred to as being a registered or “PE” engineer. They must also be endorsed to work in the building industry which you can check on the Consumer Affairs Victoria (CAV) website where the register resides.
Depending on your project, you may also engage other specialists such as geotechnical engineers, bushfire consultants, or consultant building surveyors where a performance solution is needed.
Together, this team works to bring your vision to life while ensuring the design meets planning requirements, building regulations, and the National Construction Code.
The quality of your design documentation has a direct impact on how smoothly your project runs, so investing time and effort in the design stage will pay off throughout the build.
That said, getting a designer/architect who gives you 60 pages of internal elevations and cabinetry details to justify their fee and 10 pages otherwise of actual building documentation is not an optimal outcome.
You may also choose to explore alternative construction methods as part of your design journey, particularly if you are aiming for improved performance, sustainability, or a unique outcome.
This can include modern approaches such as modular or prefabricated construction, where elements of the building are manufactured off-site and assembled on-site, often improving build speed and quality control.
Natural building methods, such as rammed earth, straw bale, or other low-impact materials, are also becoming more common and can offer strong thermal performance and environmental benefits.
These approaches often require closer collaboration between your designer, engineer, and building surveyor to ensure they meet the National Construction Code and relevant performance requirements.
Alternative systems may also involve more documentation, such as performance solutions or specialist engineering, particularly where they fall outside of standard “deemed-to-satisfy” construction methods.
With the right team and documentation, these methods can be successfully approved and delivered, allowing you to create a home that is both innovative and tailored to your values as an owner-builder.

7. Understanding the Planning Process

The planning process is how your local council decides whether your proposed development is appropriate for your land.
In Victoria, this process results in a Planning Permit, which is similar to what is referred to as a Development Approval (DA) in other states.
Depending on your project, this process may involve input from council planners, referral authorities, and in some cases, neighbouring properties.
If a permit is issued, it will come with a set of conditions that must be followed throughout the project. These conditions can affect how the building is designed, constructed, and ultimately used once completed.
Some conditions are temporary and only apply during the design or construction stages. Others are ongoing and remain in place long after the project is finished. In our experience, this commonly includes requirements relating to bushfire management overlays, onsite wastewater systems such as septic, and certain vegetation protections.
It is important to understand these conditions early, as they can influence design decisions, engineering requirements, and overall project feasibility.
Planning timelines can vary significantly depending on the complexity of the project and the local council. A straightforward application may take a few months, while more complex proposals involving overlays or objections can take much longer.
Delays are common and can occur due to requests for further information, referrals to authorities, or objections from neighbours. Because of this, it is important to allow sufficient time in your overall project program for the planning stage. Trying to rush planning approvals often leads to redesigns, more costs, and (lots of) frustration.
Many planning applications require supporting reports prepared by specialist consultants. These are used to prove that your proposal meets planning controls and does not create unacceptable impacts.
Common reports include bushfire management plans, land capability or septic assessments, vegetation or arborist reports, and stormwater or drainage concepts.
These reports are typically prepared by suitably qualified professionals such as bushfire consultants, geotechnical engineers, civil engineers, or arborists among others. Your building designer or architect will usually coordinate these inputs as part of the design process.
Engaging the right consultants early can help avoid delays and reduce the risk of council requesting further information later.
Should you wish to outsource this process, in Victoria the consultant you are looking for is a “Planning Consultant”, “Town Planner” or “Urban Planner” by various titles.
Planning is not just a paperwork step—it comes with real costs that need to be factored into your budget. This includes council application fees, consultant reports, and any redesign or variation costs that arise during the process.
Some requirements, such as bushfire or environmental conditions, can also add to construction costs later in the project. It is important to understand these potential costs upfront, so they don’t come as a surprise after approvals are granted.

8. The Building Permit Process

Once your design is sufficiently developed, the next step is obtaining a building permit.
This process begins with appointing a building surveyor, who handles assessing your documentation and issuing the permit if everything complies with the Building Act, Building Regulations, and the National Construction Code (NCC).
You can appoint either a private building surveyor or apply through council (what few are left that still do their own permits!), although most owner-builders choose a private surveyor for flexibility and responsiveness.
Naturally, we are a little biased here and recommend engaging an experienced private building surveyor (ideally ourselves), as having a responsive and knowledgeable surveyor can make a significant difference to how smoothly your project progresses.

8a. The Permit Assessment and RFI Process

Once your surveyor is appointed, your drawings and supporting documentation are submitted for assessment. This includes architectural drawings, engineering, energy reports, and any other required compliance documentation.
The surveyor will review the submission to ensure it meets the requirements of the NCC, relevant Australian Standards, and applicable regulations.
It is very common for the surveyor to issue a Request for Further Information (RFI) during this process. An RFI simply means that something in the documentation is unclear, incomplete, or requires further detail to prove compliance.
This may relate to structural elements, energy performance, construction details, or coordination between documents or anything else that is raised as a concern.
Your design team—typically your designer, engineer, or other consultants—will respond to these RFIs and update the documentation accordingly. This back-and-forth process continues until the surveyor is satisfied that the proposal complies.
While this can feel like a delay, it is a critical step in finding issues early and avoiding problems during construction.

8b. Issuing the Building Permit

Once all RFIs have been addressed and the documentation is compliant, the building surveyor can issue the building permit.
The permit is a legal document that confirms your project meets the required building standards and can continue to construction. It will include approved drawings, documentation, and a list of conditions that must be followed during construction.
These conditions often include required inspection stages, specific construction requirements, and any other compliance obligations.
It is important to understand that the building permit does not override the planning permit. All planning conditions must also be satisfied, both during construction and prior to final sign-off.

8c. Mandatory Inspections During Construction

As construction progresses, the building surveyor must conduct mandatory inspections at key stages of the build. These are typically footings (digging), steel reinforcement (any concrete), framing and final but there are others and they are all project specific.
It is important to understand that these inspections are compliance inspections, not quality control inspections. This means the surveyor is checking that the work meets minimum regulatory requirements, not that it meets your personal expectations for finish or workmanship. Ensuring quality outcomes remains your responsibility as the owner-builder, often requiring your own oversight or independent advice if needed.
It’s worth noting that as the Owner Builder, the Relevant Building Surveyor (RBS) – us, ideally – will in the instance of non-compliant work issue you with an inspection report and/or a direction to fix. This, as you are the builder is your responsibility to sort out and consult with any subcontractors who completed the work to bring it up to standard. Any added costs here are borne entirely by you.
It is the owner-builder’s responsibility to notify the surveyor when each stage is ready for inspection. Work must not continue beyond a prescribed stage until the required inspection has been completed and approved.
Failure to notify the building surveyor or continuing past a notification point requires us to notify the authority of the non-compliance and begin enforcement action. Our hands are tied; it must be done and this carries significant added costs and fines.

8d. Managing Documentation Throughout the Build

Throughout construction, you will need to collect and keep a range of documents to prove compliance. This primarily includes certificates of compliance from licensed trades, and any variations or updated drawings.
Keeping organised records is essential, as these documents will be needed for final certification and may also be needed if you sell the property in the future.
Failure to obtain the correct documentation during the build can delay (or make impossible) final sign-off and create complications later.

8e. Final Inspection and Occupancy

At the completion of the project, a final inspection is conducted by the building surveyor.
This inspection confirms that the building has been constructed following the approved permit documentation and relevant regulations.
For final sign-off to be issued, two key requirements must be met.
First, the building work must comply with the NCC, Building Regulations, and all permit conditions.
Second, all planning permit conditions must also be satisfied, including any ongoing or enduring requirements imposed by council.
If everything is in order, the surveyor will issue either a Certificate of Final Inspection or an Occupancy Permit, depending on the type of project. This document confirms that the building is suitable for occupation and that the regulatory process is complete.
At this point, our journey together is complete, and we wish you the best in your new home or other structure as best benefits you and your family.

9. Completing the Journey

Reaching final sign-off on your project is a major milestone, but it is not the end of your responsibilities as an owner-builder. These responsibilities relate to planning conditions, documentation, warranties, and your obligations if you choose to sell the property in the future.
Some requirements tied to your project do not end once the build is finished.
As noted earlier in the planning process, certain planning conditions are enduring, meaning they continue to apply indefinitely. These can include bushfire management requirements, vegetation protections, drainage or septic conditions, and other site-specific controls.
Good record keeping during construction becomes especially important after completion.
As an owner-builder, you should keep all key documentation relating to the project.
This includes building permits, approved plans, inspection records, certificates of compliance from trades, engineering certifications, and the final occupancy or completion certificate. We also suggest you keep records of invoices and communication chains between yourself and subcontractors or suppliers for implied or actual warranties.
These documents form the backbone of your compliance history and are critical if you later decide to sell the property.
In Victoria, property sales require a Section 32 Vendor Statement, which is a legal document that discloses key information about the property to potential buyers. This statement must include details such as title information, planning controls, and any building permits issued within recent years, along with relevant certificates and reports.
Having complete and well-organised records makes this process significantly easier and reduces the risk of delays or legal issues during a sale.
As an owner-builder, you are also subject to statutory warranties under Victorian law. These warranties effectively mean that you stand behind the work you have completed, even after the project is finished. If you sell the property, these warranties transfer to the new owner and can remain in place for a number of years.
If you sell your property within 6 years and 6 months of completing the building work, more obligations apply. For projects valued over $16,000, you must obtain domestic building insurance before entering into a contract of sale.
This insurance protects the purchaser if you, as the owner-builder, are unable to meet your obligations due to death, insolvency, or disappearance. It forms a key part of the risk framework around owner-built properties and provides confidence to buyers in the absence of a registered builder.
One of the most important ongoing obligations is related to Section 137B of the Building Act.
If you sell your property within 6 years and 6 months of completion, you must obtain a defects inspection report prepared by a registered building practitioner. We can also help you with these.
This report identifies any defects, incomplete works, or compliance issues associated with the construction. It must be less than six months old at the time of sale and is typically attached to the Section 32 Vendor Statement provided to prospective buyers.
This requirement applies broadly to most owner-builder work and is intended to provide transparency and protect purchasers.
If the report or insurance is not provided when needed, it can affect the validity of the sale and expose you to legal risk potentially even nullifying or reversing your contract of sale.
Completing an owner-builder project is a significant achievement.
You have taken on responsibilities that are normally carried by a registered builder and successfully navigated design, approvals, and construction.
Now it’s time to step back and enjoy what you have created, knowing the effort and care that has gone into every part of it.
The skills, resilience, and problem-solving you’ve developed throughout the process don’t stop here—they carry forward into whatever comes next.
Whether it’s future projects, your home itself, or other challenges in life, that same drive, passion, and dedication will continue to serve you well.