Before signing a building contract, ask your builder about registration and insurance, whether the contract is fixed price or cost-plus, what’s included versus excluded, how provisional cost items work, how variations are priced and approved, the realistic build timeline, who your main point of contact will be, and what warranties apply. Confirming these upfront protects you from unexpected costs, delays, and disputes once construction begins. A transparent builder will answer all of these clearly and provide everything in writing before you commit.
There’s a particular kind of excitement that comes with finally sitting down to sign a building contract, and a particular kind of nervousness too, if we’re honest. Before you get to that point, though, it’s worth pausing and working through the questions to ask a builder that actually matter: things like licensing, how the price is structured, what the timeline looks like, and what your options are if something doesn’t go to plan. That’s what this post covers, the practical stuff you should nail down before you commit, not just the fine print nobody reads.
Sounds like a no-brainer, but plenty of people never actually ask. Partly because it feels rude, partly because there’s an assumption that every builder must be legit. In Victoria you can look up a builder’s registration on the Victorian Building Authority site in about two minutes flat, so there’s really no excuse not to check. Same goes for insurance, ask to see it. If the build hits a snag, or a defect shows up months later, that cover is what protects you, not goodwill.
Any builder worth working with will hand this information over without hesitation. If they hesitate, that tells you something.
This is where a lot of first-timers get tripped up. Fixed price contracts mean the number on the page is the number you pay, aside from agreed variations. Cost-plus arrangements work differently, the final figure can move as the project goes, which sounds fine until it doesn’t. For anyone building to a tight budget, fixed price tends to be the safer bet, so ask outright which model you’re being offered and why.
Then dig into what that price actually covers. Inclusions and exclusions differ wildly between builders, and it’s an easy trap to assume something’s covered when it’s actually sitting outside the contract. A good way to gauge whether a builder is being upfront about this is to look at how they lay out their process publicly, Viewcon Group’s custom home building page is a decent reference point for what a transparent, well-explained approach to pricing and inclusions should look like.
You’ll often see “PC items” or provisional sums sitting in a contract, money set aside for things that can’t be locked in until later, maybe certain fittings, or site costs that depend on what turns up once digging starts. Perfectly normal. What you want is a plain explanation of what’s included under that heading and how the final number gets settled once it’s known. If a builder can walk you through this without dodging the details, that’s generally a good sign.
Nobody’s plans stay completely static. You might change your mind on a benchtop, or the site could throw up something nobody expected. Ask how variations get approved, who signs off, and how the cost gets calculated, because the last thing you want is an invoice for extra work you never actually agreed to in writing. Builders with a clear, documented variation process tend to save everyone a headache later.
Push for an actual start and finish date rather than a vague “a few months.” And ask what happens to your rights if things run over, because they sometimes do, weather, supply hold-ups, council delays, the usual suspects. A builder who gives you a realistic timeframe up front, even if it’s not the flashiest answer, is generally more trustworthy than one who tells you exactly what you want to hear. This matters even more if you’re timing things around a lease ending or a settlement date.
Somewhere in the middle of a build you’ll have a question, and you’ll want to know exactly who to ring. Site manager? Project coordinator? The builder directly? Ask this early, along with how often you can expect updates. Builds that feel chaotic from the outside are often just builds where nobody set expectations on communication from day one.
Get clear on warranty periods, structural versus general workmanship, and make sure it’s written down, not just said out loud. Ask to see finished homes similar to what you’re planning, or better yet, speak to a past client directly. A builder who’s confident in their work has no reason to shy away from this. Honestly, of all the questions to ask a builder, this is the one that tells you the most about how they’ll actually behave once your signature’s on the page.
None of this is about being difficult or over-cautious. It’s about making sure you and your builder are genuinely aligned before you sign off on one of the biggest financial commitments you’ll probably ever make. A builder with nothing to hide won’t mind the scrutiny, if anything, they’ll expect it.
Still got a few questions of your own? Get in touch with Viewcon Group and talk it through with the team before you sign anything. Asking costs you nothing, and it might just save you a fair bit of stress later on.
Confirming the builder is registered and insured comes first, it's the foundation everything else builds on. Without this, warranties, dispute protections, and legal recourse become far harder to rely on if something goes wrong. Most states let you verify registration online in minutes, so there's no reason to skip this step, no matter how reputable a builder seems on the surface or through referrals.
A fixed price contract locks in the total cost upfront, so you know what you'll pay barring genuine variations. A cost-plus contract charges based on actual costs as the build progresses, meaning the final figure can shift. Fixed price generally suits buyers working to a strict budget, while cost-plus can suit highly customised or unpredictable projects where costs are harder to estimate accurately in advance.
Provisional cost (PC) items are allowances set aside for things that can't be finalised until later, such as specific fittings or site works dependent on ground conditions. They're a normal part of most contracts, but it's important to understand exactly what each allowance covers and how the final cost is calculated once the real figure becomes known partway through the build.
Most Australian states have an online building authority register where you can search a builder's licence status directly, usually within a couple of minutes. This confirms they're legally permitted to carry out the work and are covered by the relevant insurance requirements. Always verify this yourself rather than relying solely on a builder's word or website claims.
A proper quote should break down site costs, materials, labour, and clearly state what's included versus excluded, along with any provisional sums. Vague or overly simple quotes are a red flag, since missing details often surface later as unexpected charges. Ask for everything in writing so you can compare quotes accurately between different builders.
Variations should follow a documented process: a written request outlining the change, its cost impact, and sign-off from both parties before work proceeds. Verbal agreements alone leave you exposed to disputes over pricing or scope later. Ask your builder upfront how they manage variations so you know exactly what to expect if your plans shift mid-build.
Builders typically offer structural warranties covering major defects over several years, plus shorter warranties for general workmanship. Reputable builders often extend beyond minimum legal requirements. Always get warranty terms in writing, including what's covered, the duration, and the process for lodging a claim, rather than relying on a verbal assurance made during initial conversations.
Build times vary depending on design complexity, approvals, and site conditions, but ask your builder for a realistic start and finish date rather than a rough estimate. Also confirm what happens if the timeline extends due to weather, supply delays, or council processes, so you understand your rights and aren't caught off guard.
This is usually a site manager or project coordinator who oversees day-to-day progress and answers your questions. Confirm this early, along with how often you'll receive updates. Clear, consistent communication throughout the build significantly reduces stress and helps you catch potential issues early, rather than discovering them after the fact.
Yes, and you should. Ask to view completed homes similar to what you're planning, or request contact details for past clients. A confident, experienced builder will happily provide this. Speaking directly with previous clients often reveals more about reliability and communication than reviews or photos alone ever could.
