The builder you choose will control your budget, your timeline, your stress levels, and the quality of the home you live in for the next 30 years. In Ballarat, you have dozens of options ranging from volume builders to small custom operators, and the difference between a good choice and a bad one is not always obvious from a website or a display home. Use this guide to spot the warning signs before you sign.
This guide covers the practical things you should check, the questions you should ask, and the red flags that should make you walk away.
Before comparing quotes, write down your non-negotiables and compromises. A builder should test those priorities against the site, budget, and programme. If discussions centre on headline price, ask what is missing. The best comparison is clear scope, allowances, and a team that explains changes before they cost you money.
Start with Registration and Licensing
In Victoria, every builder performing domestic building work over AUD $10,000 must be registered as a building practitioner. Since 1 July 2025, registration is managed by the Building and Plumbing Commission (BPC), which took over from the Victorian Building Authority (VBA). This is not optional. It is the law under the Building Act 1993.
Check your builder’s registration on the BPC’s public register. Confirm:
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Registration is current (not expired, suspended, or cancelled)
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The registration class matches your project (DB-U for unlimited domestic building, DB-L for limited)
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The individual named is the person you are dealing with (not a company employee trading on the company’s registration)
If a builder cannot produce current registration, stop the conversation.
Domestic Building Insurance
For eligible domestic building contracts signed on or after 1 July 2026, Home Warranty insurance generally applies to domestic building work valued at more than $20,000, subject to the scheme’s eligibility rules. Contracts signed before 1 July 2026 may remain covered under Domestic Building Insurance (DBI). The current Victorian scheme provides cover for eligible incomplete, defective or non-compliant work, including structural faults for 6 years and non-structural faults for 2 years, subject to the applicable policy and claim rules.
Ask the builder how the applicable insurance works for your contract and confirm the required notice or certificate before work starts. Check the current Building and Plumbing Commission guidance before signing.
Check Their Actual Experience with Custom Homes
Building a custom home is different from a standardised build or a renovation. Custom builds require:
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Working with architects and designers on bespoke plans
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Managing complex site conditions (Ballarat has reactive clay soils, heritage overlays, and bushfire zones)
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Coordinating specialist trades for non-standard specifications
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Problem-solving on unique designs where there is no playbook
A builder’s experience should match the type and complexity of your project. Ask specifically:
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How many custom homes have you built in the last 3 years? (Not renovations, not project homes: custom homes from bespoke plans)
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Can I visit a current build site? (Ask what access is available and what can be viewed safely.)
At Murphy James, the focus is high-end custom homes and large extensions. Review the project gallery and ask whether the builder’s experience matches your brief.
Understand Their Design Process
A common question is: ‘Do I need plans before talking to a builder?’
The answer depends on the builder. Some builders want complete plans before they will quote. Others prefer to be involved earlier, during the design phase, so buildability, cost implications and material choices can be considered before plans are finalised.
Ask your prospective builder:
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At what stage do you get involved? (Concept, detailed design, or only after completed plans?)
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Do you work with specific architects or designers? (And if so, why?)
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Will you provide cost guidance during the design phase? (This is critical: designing in a vacuum produces plans that exceed budgets)
Daniel refers clients to a building designer or one of two architects, depending on the project’s scope and budget. For more on the wider process, see our guide to building a custom home in Ballarat.
Ask About Their Contract and Pricing Model
The contract is the most important document in your build. Before you sign, understand:
Fixed Price vs Cost Plus
A fixed-price contract sets out an agreed scope and price, while a cost-plus contract charges based on project costs. Neither removes the need to understand allowances, exclusions, variations, payment stages and the contract terms. Compare the protections and risks in the contract you are considering rather than assuming one model is always safer.
What Is Included
Ask for a detailed inclusions list. Check specifically:
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Are site works (excavation, retaining, soil preparation) included or excluded?
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Are service connections (water, sewer, power, gas) included?
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What are the PC (prime cost) and PS (provisional sum) allowances, and are they realistic?
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Is landscaping included? Driveway? Fencing?
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What about council fees and permit costs?
A low headline price with low allowances and extensive exclusions is not a bargain. It is a setup for variations.
The Domestic Building Contract
In Victoria, most custom home builds use a HIA (Housing Industry Association) or Master Builders Victoria contract. These are standard-form contracts that comply with the Domestic Building Contracts Act 1995. Make sure:
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The contract specifies a completion date (or a formula for calculating one)
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Payment stages follow the progress payment limits set by the Domestic Building Contracts Act 1995
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Variation procedures are clearly defined
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Dispute resolution processes are specified
Assess Their Communication Style
You will be working with your builder for 12 to 24 months. If communication is poor before you sign, it will be worse during construction.
Before Signing
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Do they return calls and emails within 24 hours?
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Do they explain things clearly, or do they use jargon and assume you understand?
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Do they push you toward a decision, or do they give you space to think?
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Are they transparent about costs, even the ones that make the project more expensive?
During the Build
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What project management system do they use, and will you have access to it?
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How often will you receive progress updates?
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Who is your primary contact on site?
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How are variations communicated and approved?
A builder who goes quiet during construction is a builder who is hiding problems.
Check Financial Stability
Builder insolvency is a real risk in any market. Protect yourself by checking:
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How long has the business been operating? (Longevity is not a guarantee, but it is an indicator)
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Does their current workload match their team and proposed start date? Ask how active projects, supervision and trade capacity align with your programme.
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Do they require large upfront deposits? (For domestic building contracts under $20,000, the deposit cap is 10%. For contracts of $20,000 or more, it is 5%. Check the current Victorian guidance before signing.)
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Do they pay their subcontractors on time? (Ask the subbies. They will tell you)
Visit Completed Homes and Active Sites
Photos on a website show the best angle of the best project. A site visit shows you reality.
On an active build site, look for:
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Cleanliness and organisation (a messy site is a poorly managed site)
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Safety compliance (fencing, signage, PPE)
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Quality of work in progress (framing straight, bracing correct, materials stored properly)
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Workers who are busy and professional (not sitting in cars or standing around)
On a completed home, check:
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Finish quality (paint edges, tile alignment, joinery fit, door operation)
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Client satisfaction (ask the homeowner: would you build with them again?)
Questions That Reveal the Truth
These questions cut through marketing and get to the reality of working with a builder:
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What is your current workload and when could you realistically start my project? (Honest builders give real dates. Desperate builders promise anything.)
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What was the last project that went over budget, and why? (Every builder has one. The good ones own it and explain what they learned.)
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Who is the actual person managing my build day to day? (It should be a named individual, not “our team.”)
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How do you handle disagreements about defects or finishes? (The answer reveals whether they stand behind their work.)
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Can I see your insurance and registration certificates right now? (If they hesitate, leave.)
What Murphy James Does Differently
Murphy James Builders focuses on high-end custom homes and large extensions for people who want something designed for their life, their land and their budget.
What that means practically:
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Tye and Daniel are hands-on. You deal with the owners, not a sales team.
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We limit our projects. Ask how many projects the team can support well at one time.
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The fit matters. Read who Murphy James Builders is not a good fit for before you enquire.
For a full picture of what a custom home costs in our area, see our Ballarat custom home cost guide.
Prepare for a useful first project conversation
Bring the property address, your rough brief, the budget range, timing constraints and any drawings or reports you already have. Ask the builder to separate confirmed scope, allowances, exclusions and decisions that still need investigation. After the meeting, keep a written summary of what was agreed, who owns each next step and which figures are still indicative. That gives the designer, builder and consultants one clear starting point and helps you compare advice on the same information.
Business Spotlight: Murphy James Builders
Murphy James Builders is owner-led, with Tye and Daniel directly involved in the custom homes and large extensions the team takes on. The business uses a 605-point quality checklist and a six-point builder guarantee. This approach suits clients who value direct communication, project-specific decisions and a custom result. Read who Murphy James Builders is not a good fit for before you enquire.
Frequently Asked Questions
How many quotes should I get?
There is no mandatory number. Compare enough quotes to understand the market, but only compare proposals based on the same drawings, specifications and inclusions. If one quote is materially lower, check its scope, allowances and exclusions before treating it as comparable.
Should I choose the cheapest builder?
Almost never. The cheapest quote usually reflects lower allowances, more exclusions, or a builder underbidding to win work. The most expensive quote is not automatically the best either. Look for realistic pricing with clear documentation.
How do I know if a builder is overcommitted?
Ask them directly: how many active projects are you running right now, and how many do you plan to start in the next 6 months? If the numbers do not add up with their staffing, they are overcommitted.
What is the biggest red flag?
A builder who will not show you current registration, current insurance, and active project references. Everything else is negotiable. These three are not.
When should I start talking to builders?
Early. Ideally before your plans are finalised. A builder’s input during design can save significant money and avoid buildability issues.
Choose Carefully
Your builder is the most consequential hire in the entire project. Take the time to check registration, visit sites where access is available, and ask hard questions. The right builder makes the process clearer. The wrong one makes it harder.
If you are considering building in Ballarat, get in touch with Murphy James. We will give you an honest assessment of your project, even if the answer is that we are not the right fit.