How to Choose a Builder You Can Trust
A practical framework for shortlisting, checking and picking a builder for your project.
6 min read · Updated 2026
Key takeaways
- ›Always get three written quotes and compare the breakdown, not just the total.
- ›Check insurance, qualifications and references before agreeing anything.
- ›A proper contract and staged payments protect both you and the builder.
Start with a clear brief
Before you speak to any builder, write down exactly what you want done. Include the rooms or areas involved, the materials you would prefer, a rough timeline and your budget range. A clear brief means every quote you receive is based on the same scope, so you can compare them fairly.
Vague briefs produce wildly different prices because each builder prices a different version of the job in their head. A one-page brief with a few photos removes that confusion.
Shortlist and check credentials
Aim for a shortlist of three to five builders. For each one, check that they have Public Liability and Employer Liability insurance, the right trade cards for the work (CSCS, ECS, Gas Safe for gas), and examples of similar completed jobs.
Ask for two recent references you can actually phone. A reputable builder will be happy to provide them. On Construction Jobs Hub you can also look for an admin-certified profile and an identity-verified badge as extra trust signals.
- •Public Liability insurance — at least £2 million for most home projects.
- •A written address and landline or mobile, not just a social media page.
- •A VAT number if they are charging VAT.
- •Photos of similar completed work and named references.
Compare quotes properly
When the quotes come back, lay them out side by side. Look at what each line covers — labour, materials, scaffolding, waste removal and VAT. A cheaper total that misses out waste removal or uses budget materials is not actually cheaper.
Ask each builder to itemise anything they have left as "provisional" and confirm in writing what is and is not included. A fixed-price quote is safer than a day-rate estimate for any job larger than small repairs.
Frequently asked
Should I go with the cheapest quote?
Not automatically. A quote far below the others usually means something is excluded or corners will be cut. Compare the breakdown and ask questions before deciding.
Do I need a contract?
Yes, for anything beyond small repairs. A written agreement covering scope, price, payment stages, start date and completion date protects both sides.
Related guides
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