Finding a Professional Building Contractor

How to Choose the Right Builder and Avoid Common Pitfalls

For many homeowners, the most challenging part of any renovation or building project isn’t the work itself — it’s finding a competent, reliable contractor who can get the job done right, on time, and within budget.

From botched kitchen remodels to runaway costs and unfinished projects, we’ve all heard the horror stories. Even with a good contractor, renovation can be stressful — hidden problems like rotted subfloors, outdated wiring, or plumbing issues can quickly complicate things.

Choosing the right contractor can be the difference between a smooth, successful project and a costly disaster. That’s why we’ve put together 19 essential tips to help you hire a builder you can trust — and keep your project (and sanity) on track.

1. Know What You Want Before Requesting Quotes

Start with a clear plan. If it’s a major project, architectural drawings and approved plans are essential. The more specific your brief, the more accurate the quote — and fewer surprises later.

2. Work with NABC

We take the guesswork out of hiring. All our contractors are thoroughly vetted through a stringent process including reference checks, credit assessments, insurance verification, and project reviews. Only the most qualified make the cut.

3. Always Compare At Least Three Quotes

Ask detailed questions and get written quotes. Make sure each includes the same materials and scope of work so you’re comparing like-for-like. Don’t hesitate to negotiate.

4. Don’t Rely Solely on a Friend’s Recommendation

A contractor who did a good job for someone else might not be right for your project. Always carry out independent checks. We provide added protection — even if issues arise, we’ve got your back.

5. Clarify Who Will Be Doing the Work

Ask whether the contractor will use employees or subcontractors. Smaller teams offer a personal touch but may struggle with larger projects. Larger firms may have more resources but can treat clients like just another job.

6. Choose the Right Contractor for the Right Job

The perfect tiler might not be the right choice to build your rear extension. Always match the contractor’s experience to your project type.

7. Check Licenses, Complaints, and Company History

Outside our network, you’ll need to do more legwork. Research company directors, credit history, and social media presence. Frequent business closures or lack of online visibility can be red flags.

8. Ask for and Verify References

Don’t just settle for a phone call. Visit past job sites and speak to previous clients. Ask about professionalism, reliability, and how issues were handled.

9. Read Reviews, But Don’t Rely on Them Alone

Online reviews on Google or Trustpilot are helpful, but not enough. Combine them with verified references and site visits.

10. Sign a Comprehensive Contract

Ensure everything is clearly laid out: timelines, materials, payments, and responsibilities. All changes should be documented with written change orders. If the builder’s contract is vague, add your own terms.

11. Secure All Necessary Permits

Don’t let anyone convince you to skip permits. It’s illegal and risky. Ensure you have all approvals, party wall agreements, and have notified the local authority. Most projects require at least 48–72 hours’ notice to begin.

12. Never Pay More Than 5 – 10% Upfront

A deposit may be needed for materials, but don’t fund other projects. Payments should be tied to completed milestones — not vague timelines.

13. Budget for Unforeseen Costs

Unexpected problems happen. Keep 10–15% of your budget aside for surprises like deeper foundations, poor ground conditions, or changes requested by Building Control.

14. Set Ground Rules Early

Agree on working hours, site access, bathroom use, and daily cleanup expectations. Set the tone from day one to avoid misunderstandings.

15. Stay in Regular Communication

Check in daily on larger jobs. Our inspection system flags and resolves issues early. If working outside our network, be proactive — small issues can escalate quickly if ignored.

16. Verify Insurance Coverage

Understand what your contractor’s insurance covers — and what it doesn’t. Our contractors are covered by a robust policy, but it’s always worth double-checking, especially for large-scale works.

17. Hold Back Final Payment Until 100% Completion

Don’t pay in full until you’re completely satisfied. A two-week “snagging” period is standard, allowing for minor issues like settling cracks or leaks to be addressed.

18. Demand Detailed Documentation

Every quote should be clearly itemised and span at least two pages. If a contractor can’t provide that level of detail, be cautious. Transparency is key to accountability.

Final Thoughts

Finding a builder you can trust isn’t just about the lowest price — it’s about protecting your investment, your home, and your peace of mind. With NABC, we’ve done the hard work for you. Every contractor is vetted, monitored, and backed by our commitment to quality and accountability.

Ready to start your project the right way?
Submit your enquiry today and get matched with up to three fully approved, trusted contractors.