Hiring a good and reliable builder makes the difference between a smooth and rewarding build project to a challenging and stressful one – which takes longer to complete and costs much more. Which builder you hire is the most important decision you will make when undertaking a home renovation or construction project.
In 2025 with so many online directories, attractive websites and self-promotion on social media it can be hard to find the genuine professionals amongst all the cowboys. It is essential to spend time researching to find a trustworthy builder for your 2025 building project.
Here we bring you our top ten tips to help you find a professional and trustworthy builder who will not let you down.
1. Ask for recommendations
A good starting point is to ask friends and neighbours, if they have had similar work done. If you are working with an architect, they may well know reliable and professional local builders. A personal referral is usually one of the most reliable ways to find a good builder.
2. Check names in Trade Associations
Look for builders who are members of one of the recognised trade associations such as the Federation of Master Builders (FMB), National Federation of Builders (NFB), Chartered Institute of Building (CIOB) or TrustMark. Being a member of one of these organisations usually requires adherence to ethical and quality standards.
In 2025, it is quick and advantageous to use a Trusted Builder Matchmaking Platform such as Checkatrade, Rated People, Bark, etc.
3. Check their online reviews and ratings
There are some excellent platforms for doing this such as Trustpilot and Checkatrade. Look for builders who have a number of reviews and are repeatedly given good reviews. Read about the quality of their work and whether they completed the work on time. Look for any reviews that describe any problems encountered and importantly, how the builder handled them.
Quick Tip: In 2025 it is beneficial to use AI-based browser extensions that summarise trust signals across platforms.
4. Verify their suitability and insurance
It is important to check that the builder is licensed and has completed similar conversions/ extensions to the one you are planning. Are they qualified for the type of work they will be undertaking? They must be well insured, and this must include current public liability insurance.
Quick Tip: To complete this task speedily, use government verification sites and apps to check credentials.
5. Request recent references
Try and speak to the builders’ recent clients directly and visit their finished work. Seeing the quality of their workmanship in person is far more accurate than photographs. Check that their previous clients were happy with the quality of work as well as the builder’s punctuality and communication. The best question to ask is whether they would choose the same builder again!
6. Get a detailed, written quote
To get a really accurate quote, you need to provide the builder with a comprehensive list of specifically what you want them to do. For example, will the builder be digging the foundations and completing the internal plastering. Will they also be responsible for the plumbing and electricity? It is a good idea to invite the builder for an on-site visit so they can fully understand the complexities of the project. The more information you provide to the builder, the more realistic the quote.
A good written quote is transparent and broken down into different sections covering materials, labours and time frames. The quote should include costs for any subcontracted work and any specialist materials needed. Make sure that the builder is VAT registered, and that VAT is included in the quote. The VAT rate is usually 20%, but some building work on listed buildings may qualify for a reduced rate.
Beware of “PC sums” and vague line items— if you have any questions, ask for clarification.
7. Be wary about upfront payments
Whilst it is usual to be asked for a small deposit, it is unusual for a builder to ask for large payments upfront. Payment stages should be listed in the written quote, and these are tied to the completion of various stages of the work.
8. Insist on a written contract
It is imperative that you fully understand what elements are not included in the fixed price quote so that you can plan for these. When you are happy, you must ensure that you get a signed written contract. The contract should be detailed and include costs, timelines and materials as well as the payment plan. A good contract protects both parties.
Quick Tip: Get the contract reviewed by a third-party review such as a solicitor or construction consultant.
9. Prioritise Communication and Professionalism
A top requirement when you are choosing a builder is that they have good communication. It is essential that they are prompt with replies and give weekly updates and that they are also transparent about any possible delays.
Quick Tip: Be flexible in your approach and expect changes but have a Variation Agreement in place.
10. Trust your instincts
The bottom line is that you should trust your instincts and if the builder inspires you with confidence, is professional and respects your diligence, then you have found a good and trustworthy builder. Conversely, if things don’t feel right and the builder seems to be reluctant to provide details, rushes their communication with you or are pressurising you to decide quickly, best to take a big step back.
Conclusion
Our top ten tips will prove invaluable if you are looking for a professional and trustworthy builder for your 2025 home conversion/ extension project. We at Build Team pride ourselves on the fact that we have been trusted by more than 1,600 houseowners to design and build their extensions.
If you are planning a conversion/ extension to your home to meet your family’s changing needs, why not contact Build Team today and book your FREE design consultation?
