10 Questions to Ask Perth Home Builders Before You Sign

Signing a building contract is one of the most significant financial commitments you’ll ever make. Yet many first-home buyers in Perth sign without asking the questions that would have saved them thousands of dollars – or months of frustration.

The good news: the right questions, asked early, separate the best-value builders from those who rely on vague pricing and fine print. Whether you’re comparing affordable home builders for a house and land package or evaluating a custom new home build in Perth, this checklist gives you the confidence to walk into any consultation and know exactly what to ask.

Here are the 10 questions every WA first-home buyer should ask before signing with any Perth home builder.

Question 1: Is This a Fixed-Price Contract, and What Does That Actually Mean?

The phrase “fixed-price contract” is used frequently by home builders in Perth WA, but it doesn’t always mean what buyers expect.

A genuine fixed-price contract means the total cost of your home will not increase unless you request a change. Provisional sums, allowances made for costs that haven’t been confirmed yet, like site works or certain fittings, are a common way costs can escalate beyond what the fixed price suggests.

What to ask:

• Is the contract price truly fixed, or does it contain provisional sums?
• What are the provisional sum items, and what is each amount based on?
• Under what circumstances can the builder vary the contract price?

A builder offering a genuine fixed-price contract with minimal provisional sums is taking on more of the financial risk, and that transparency is a hallmark of best-value builders in Perth WA.

Question 2: What Is Included in the Base Price, and What Is Not?

Base price and total cost are two very different numbers in new home construction in Perth. A headline price that looks affordable can quickly grow when you add the items that weren’t included.

What to ask:

• Are window coverings and flyscreens included?
• Is a driveway included?
• Does the price include an alfresco or outdoor area?
• Are kitchen appliances (oven, cooktop, rangehood, dishwasher) standard inclusions?
• Are landscaping, fencing, and letterbox included or excluded?

Request a full written inclusions list before comparing quotes from different Perth builders. Only a like-for-like comparison gives you a true picture of who the most affordable home builder actually is.

Question 3: How Are Site Costs Handled, and Are They Capped?

Site costs are one of the most common sources of budget blowout in new home builds in Perth. They cover the earthworks, soil preparation, and structural requirements needed to build on your specific lot, and they vary enormously depending on the land.

What to ask:

• Is there a capped or fixed site cost, or is this an open-ended provisional sum?
• What happens if the actual site costs exceed the estimate?
• Are site costs for retaining walls included or separately quoted?

The best affordable home builders in Perth WA will either fix or cap site costs outright, removing one of the biggest variables from your total build budget. If a builder is unwilling to give you clarity on site costs early, that’s a risk to factor in.

B1 Homes offers fixed site costs. That means the site cost component of your build is locked in, not estimated, not subject to change based on what the excavator finds on the day. For first-home buyers budgeting carefully, this is a significant financial safeguard and one of the clearest signals of a genuinely transparent builder.

What to ask any builder: “Is your site cost fixed, or is it a provisional sum that could increase after I’ve signed?”

Question 4: What Is the Estimated Build Time, and What Happens If You’re Late?

Time is money when you’re building a first home in Perth, particularly if you’re paying rent while your home is under construction, or managing a construction loan with interest accruing during the build.

What to ask:

• What is the average build time for a home of this size and specification?
• Is there a guaranteed completion date or a defined build period written into the contract?
• Does the contract include any liquidated damages or compensation for significant builder-caused delays?
• What is your current average build time?

Under Western Australian consumer law and the Home Building Contracts Act 1991 (WA), builders are required to include a start date and a completion date (or the number of days to complete) in any home building contract. If your builder can’t give you a defined build timeline in writing, that’s a significant concern.

Question 5: What Is Your Energy Efficiency Rating?

Energy efficiency in new homes directly affects your ongoing cost of living, and it’s worth understanding what your builder’s standard specification delivers before you sign.

What to ask:

• What energy efficiency rating do your standard home designs achieve?
• Does the home design take into account lot orientation (e.g., north-facing living areas) to maximise natural light and airflow?
• Are solar panels, solar hot water, or battery storage included or available as upgraded inclusions?
• What insulation is included in ceiling? Can I upgrade to cavity wall insulation?
• Can the home design be adjusted to improve energy performance for my specific lot?

A quality home construction in Perth should be designed with both comfort and running costs in mind. Builders who actively advise on design orientation and insulation specification are delivering long-term value to first-home buyers, not just meeting a minimum standard.

Question 6: What Warranties Do You Provide, and What Are My Legal Rights?

Every first-home buyer in Western Australia is protected by statutory warranty provisions, but many aren’t aware of exactly what those protections cover, or how a builder’s own warranty compares.

What to ask:

• What is your workmanship warranty for non-structural defects?
• What is covered under your structural defect warranty, and for how long?
• Under WA law, builders are required to provide a 6-year warranty on structural defects under the Home Building Contracts Act 1991 — does your contract confirm this?
• What is your process for rectifying defects identified at practical completion?
• Who do I contact if I identify a defect after I’ve moved in?

In Western Australia, home building disputes are managed by the Building and Energy division of the Department of Mines, Industry Regulation and Safety (DMIRS). Knowing your builder is properly registered and compliant gives you legal recourse if things go wrong.

B1 Homes offers a 12 month maintenance period.

Question 7: Can You Help Me Navigate the First Home Owner Grant and Stamp Duty Concessions?

The most affordable Perth builders don’t just build homes, they help first-home buyers maximise every dollar of available government assistance.

What to ask:

• Can you help me understand whether I qualify for the FHOG based on my circumstances?
• Do you have an in-house or preferred finance partner with experience in WA first-home buyer loans?
• Will you help me understand the stamp duty implications of my house and land package?

B1 Homes works with Let’s Finance, our in-house finance partner, who specialises in helping WA first-home buyers navigate construction loans, FHOG applications, and the stamp duty concessions available to them. Having a finance partner embedded in the process means you’re not juggling separate relationships, your building consultant and your finance team are working from the same page from the very beginning.

Note: Always verify current grant and concession thresholds directly with RevenueWA before making financial decisions, as these figures are subject to legislative change.

Question 8: Can I See Verified Reviews From Real Clients?

Any home builder in Perth WA can show you a display home. What matters is what happens after you sign, and the most reliable evidence of that is the verified experience of people who’ve already been through the process with that builder.

What to ask:

• Do you have verified reviews on ProductReview.com.au or Google Reviews?
• How many reviews do you have, and when were the most recent ones written?
• Do you publish client stories or build journeys anywhere I can read them?
• How do you handle negative feedback or complaints from past clients?

When evaluating reviews, look for volume, recency, and specificity. A builder with a high volume of detailed, recent reviews is a more reliable signal than one with only a handful, even if the star ratings look similar.

A score of 4.9 stars or above on ProductReview.com.au, with consistent reviews over the past 12 months, is a reasonable benchmark for a reputable and affordable home builder in WA.

B1 Homes holds a 4.9-star rating on ProductReview.com.au and is also reviewed on Google. If you want to go deeper than star ratings, our blog features real client stories and build journeys from first-home buyers across Perth, giving you an honest, detailed picture of what the B1 Homes experience looks like from start to handover. Read our client stories here.

Question 9: Who Will Be My Point of Contact During the Build?

Communication failures are among the most common complaints in new home construction in Perth. A builder might deliver a beautiful home, but if you’ve spent eight months not knowing what’s happening on site, the experience will still feel like a poor one. Understanding exactly how a builder manages client communication before you sign is just as important as understanding the product they’re building.

What to ask:

• Who is my main point of contact at each stage, from design through to handover?
• Is the same person responsible for my build the entire way through, or is there a handover between teams?
• How will I be kept informed of progress during construction?
• What is your average response time to client queries during the build?
• Can I visit my site during construction, and how do I arrange access?

A clearly defined, stage-by-stage client journey is a strong indicator of a builder that takes communication seriously, and has the processes to back it up.

At B1 Homes, you’re supported by a dedicated team at every stage of the process:

1. Home and Land Consultant: Your first point of contact. They work with you to find the right design and land combination, guide you through the contract process, and set up your build for success from the very beginning.
2. Prestart Consultant: Once your contract is signed, you’re introduced to your dedicated Prestart Consultant. They guide you through all your colour, finish, and fixture selections, ensuring your home looks and feels exactly the way you envisioned.
3. Client Liaison: Once your home moves into construction, a dedicated Client Liaison takes over. They are your primary contact for the entire build, keeping you updated at every milestone from slab pour through to practical completion and handover.

This three-stage structure means you always have a named, knowledgeable person to contact, and that person understands exactly where your build is up to. Quality home construction in Perth goes beyond the physical build, and that reliability is part of what makes B1 Homes a genuinely best-value first home builder in WA.

Question 10: Are You a Member of an Industry Association, and What Does That Mean for Me?

Membership of a recognised building industry body isn’t just a marketing credential, it signals accountability to professional standards and gives you access to additional dispute resolution pathways if needed.

What to ask:

• Are you a member of the Housing Industry Association (HIA) or Master Builders WA?
• Have you received any industry awards or recognition for quality or customer satisfaction?
• Are all your trades licensed under Western Australian requirements?

Home builders in Perth WA who are active members of the HIA or Master Builders WA are subject to industry codes of conduct and have access to dispute resolution services beyond the statutory minimum. For first-home buyers, this is a meaningful additional layer of protection.