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Questions To Ask Builders Before Signing A Contract
A New Zealand Homeowner Guide
June 2026
Signing a contract with a builder is one of the most important decisions when building a new home. Asking the right questions early can help you avoid delays, unexpected costs, and misunderstandings during construction.
Before committing to a builder, use the questions below to ensure you fully understand the price, the process, and what is included in your build.
1. Is the Contract Fixed Price?
One of the first questions to ask is whether the build will be completed under a fixed-price contract.
A fixed-price contract means the total construction cost is agreed before building begins. This provides greater certainty for your budget.
Some builders may instead offer cost-plus contracts, where the homeowner pays the actual construction cost plus a builder margin. While common for architectural homes, cost-plus contracts can carry greater financial risk.
Ask:
• Is this a fixed-price contract?
• What circumstances could cause the price to change?
2. What Exactly Is Included in the Quote?
Builder quotes can vary widely depending on what is included.
Make sure the quote clearly outlines:
• foundations and structural work
• cladding materials
• roofing
• kitchen appliances
• bathroom fixtures
• flooring
• heating systems
Two quotes that look similar on price may include very different specifications.
3. What Items Are Excluded?
It is equally important to understand what is not included in the price.
Common exclusions can include:
• architectural design
• engineering reports
• surveying & legal
• building consent
• site preparation
• utility connections
• landscaping
• fencing
• driveways
• decking
• window coverings
• appliance upgrades
Many homeowners add a 10–15% contingency for unexpected expenses.
Understanding these exclusions helps you avoid unexpected costs later.
4. What Allowances Are Included?
Builders often include Prime Cost (PC) allowances for items that have not yet been selected.
These may include:
• kitchens
• bathroom fittings
• tiles
• lighting
If allowances are set too low, the final cost may increase when you choose your fixtures.
Ask the builder whether these allowances reflect realistic market prices.
5. What Warranty Do You Provide?
Most reputable builders provide a 10-year structural warranty.
Ask:
• What warranty is included?
• What does the warranty cover?
• Is the warranty backed by an independent provider?
Warranties provide important protection if problems occur after construction.
6. How Many Homes Do You Build Each Year?
Understanding the builder’s experience can help you assess their capability.
Ask:
• How many homes do you build annually?
• Do you specialise in new builds or renovations?
• Have you built homes similar to mine before?
Builders with relevant experience are more likely to deliver predictable results.
7. Who Will Manage the Project?
Some builders personally manage every project, while others rely on site supervisors.
Ask:
• Who will be my main point of contact?
• How often will I receive progress updates?
• Who manages subcontractors?
Clear communication during construction is critical to a smooth project.
8. How Long Will the Build Take?
Typical new builds take 6–12 months to construct, depending on size and complexity.
Ask the builder:
• What is the estimated build timeline?
• When can construction start?
• What factors might delay the project?
Understanding the timeline helps you plan financing and moving arrangements.
9. Can You Provide Recent Client References?
Speaking with previous clients is one of the best ways to evaluate a builder.
Ask for references from recent projects and consider asking clients:
• Was the build completed on time?
• Did the final cost match the original quote?
• Was communication clear during the project?
Positive feedback from recent clients is a strong indicator of a reliable builder.
10. What Happens if Changes Are Made During Construction?
Changes during construction are known as variations.
Ask the builder:
• How are variations priced?
• How will I approve changes?
• Will I receive written confirmation of cost changes?
Clear variation processes prevent disputes later in the build.
11. What Insurance Do You Carry?
Builders should carry appropriate insurance during construction.
Ask whether the builder has:
• contract works insurance
• public liability insurance
Insurance protects both the builder and homeowner if something unexpected occurs.
12. What Makes Your Company Different?
Finally, ask the builder what makes their company unique.
Some builders specialise in:
• architectural homes
• energy-efficient houses
• turnkey home builds
• custom design projects.
Understanding their strengths helps determine whether they are the right fit for your project.
Why Comparing Multiple Builders Matters
Many homeowners choose the first builder they meet. However, comparing several builders allows you to better understand:
• construction pricing
• quality differences
• builder experience
Comparing quotes also helps ensure you are getting fair value for your build.
Build Better helps homeowners compare quotes from trusted builders before signing a contract.
Through Build Better you can:
✔ receive quotes from multiple builders
✔ compare pricing and specifications
✔ choose the right builder with confidence.
Build Better
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