Why Getting the Right Builder Matters

Whether you're knocking through a kitchen wall, converting a loft or finally sorting out that leaking extension, the person you choose to do the work will shape how the next few months of your life feel. A good builder turns a stressful project into something you can almost enjoy. A poor one can leave you out of pocket, stuck with half-finished work and facing a legal battle you never wanted.

The good news is that reliable tradespeople are out there, and they're not hard to find once you know what to look for. The trick is to do your homework before anyone lifts a tool, not after the scaffolding goes up. A little patience at the start saves an enormous amount of grief later.

Start With Recommendations, Not Adverts

Word of mouth is still the strongest signal in the building trade. A neighbour whose extension was finished on time, a friend whose bathroom still looks sharp five years on, a colleague who can tell you exactly how their builder handled a surprise discovery behind the plasterboard — these are worth far more than a glossy advert.

When you ask for recommendations, dig a little deeper than "they were fine". Ask:

• Did they turn up when they said they would?
• Was the final price close to the original quote?
• How did they handle problems or changes along the way?
• Would you use them again, and would you let them work in your home unsupervised?

If someone hesitates before answering, that hesitation is information. Also worth checking: professional body membership, which you can verify directly with the relevant organisation rather than taking a logo on a van at face value.

Ask for References and Actually Follow Them Up

Any competent builder should be able to give you two or three recent customers who are happy to be contacted. If they can't, or if the references are all from years ago, treat that as a red flag. Ask specifically for jobs similar to yours — a builder who excels at garden walls may not be the right person for a two-storey rear extension.

When you call a reference, ask about the things that really matter:

• How long did the job actually take compared to the estimate?
• Were there unexpected costs, and how were they explained?
• How tidy was the site at the end of each day?
• Did the builder communicate well when things changed?

Where possible, visit a completed job in person. Looking at the finish, the joins and the general standard of work tells you more in five minutes than an hour of conversation.

Insist on a Written Quote, Not a Verbal Estimate

A verbal figure given over the phone is not a quote — it's a guess. Ask for everything in writing, broken down into labour, materials and any provisional sums for work that can't be priced until walls are opened up. This protects you both.

A proper written quote should include:

• A clear description of the work, room by room or stage by stage
• What's included and, just as importantly, what isn't
• The timescale, with a start date and expected completion
• Payment schedule tied to stages of work, not calendar dates
• How variations and additional work will be priced

Read it carefully. If something is vague, ask for it to be clarified in writing before you sign anything. Never feel rushed — a builder who pressures you to agree on the spot is showing you how they'll behave when there's a dispute.

Check Insurance and Qualifications Before Work Starts

Ask to see proof of public liability insurance and, if they employ anyone, employers' liability insurance. Don't just glance at a certificate — check the dates are current and the cover is adequate for the size of your project. If something goes wrong and they're uninsured, the cost may land on you.

Depending on the work, you may also need to confirm:

• Registration with a competent person scheme for gas, electrical or plumbing work
• Membership of a recognised warranty or deposit protection scheme
• Confirmation of who is responsible for building regulations approval and any planning permission

Ask for these documents in advance. A reputable builder will have them ready and will not be offended by the question.

Be Careful With Deposits and Upfront Payments

This is where many homeowners come unstuck. It is reasonable for a builder to ask for a small deposit to secure materials or a slot in their diary, but never pay a large sum before work has genuinely begun on site. A request for a substantial upfront payment — particularly in cash — should make you pause.

A sensible payment structure links money to progress:

• A modest deposit to cover initial materials, kept as small as possible
• Stage payments as each defined part of the job is completed and you've seen it
• A retention of around five per cent held back until snagging is finished

Pay by bank transfer rather than cash so there's a clear record, and get a receipt for every payment. If a builder asks you to pay for materials directly to a supplier, that can be fine, but ask for the invoices and confirm the goods are for your job.

Trust Your Instincts and Keep Records

Throughout the process, keep a simple folder — paper or digital — with the quote, the contract, any variations, receipts and a note of conversations. If a disagreement arises, having everything in one place makes it far easier to resolve calmly.

And pay attention to how a builder communicates during the quoting stage. Do they answer calls, explain things clearly and put promises in writing? That early behaviour is usually a fair preview of how the whole job will go. Choose someone who treats your home with respect, your questions with patience and your money with care — and your improvement project has every chance of going well.