Questions to ask before hiring a builder

Hiring a builder is a big decision with lasting effects on your home, budget and everyday life. A first meeting is your chance to ask direct questions—about the business, the work itself, and what happens if plans change. Clear answers now set expectations and help you compare builders on more than just price or promises.

Check the builder’s business details and track record

Ask about the business itself before discussing the job. The way a builder answers practical questions often reveals as much as their portfolio does.

• How long have you been trading under this name? Builders sometimes rebrand or change names. Longevity at the same address or under the same name can point to reliability.
• What insurance do you hold? Public liability insurance protects you if your property is damaged or someone is injured during the work. If the builder has employees, employers' liability insurance is a legal requirement.
• Who will be on site each day? Will the owner or a supervisor be present, or will work be handed to subcontractors? Knowing who to expect helps avoid misunderstandings.
• Do you use subcontractors, and how are they chosen? If much of the work is subcontracted, ask how the builder checks their credentials and who will manage them on site.
• Can I visit a current or completed job? References you can see in person offer more confidence than a list of phone numbers. Visiting a finished project lets you check quality and ask the previous client about their experience.

You can compare local builders’ trading facts, verified contact details and business histories on Annuvell Local.

Understand the project programme and site management

Before you sign anything, be clear about how the work will be organised and what permissions or controls may be needed.

• What is the project programme and sequence of work? Ask for a breakdown of the main stages, in what order they will happen and what can affect timing. This helps spot gaps or unrealistic promises.
• Will you handle permissions and Building Regulations approval? Structural changes, drainage, and anything affecting fire safety usually need approval. Ask whether the builder deals with the local authority or an approved inspector, and what documents you will receive.
• Are there any party wall or boundary issues? In England and Wales, the Party Wall etc. Act 1996 applies to certain work near shared boundaries. A builder should know if this affects your project and explain what steps are needed.
• How will site welfare and waste be managed? Ask where materials and skips will go, how access will be kept clear and what facilities (toilets, washing) are provided for workers. Good site management makes life easier for both you and your neighbours.

You can see which builders specialise in extensions, renovations, loft conversions or new builds by comparing business profiles side by side and reviewing comparison facts.

Pin down payment terms, retentions and variations

Money questions can feel awkward but are key to avoiding surprises. A reputable builder will be used to explaining how they charge and what happens if things change.

• How does the payment schedule work? Agree when payments are due—upfront, at set milestones, or only at the end. Avoid paying large sums in advance without clear progress.
• Do you use retentions? Some builders hold back a small percentage until after final checks. Ask how this works and when any retention is released.
• What counts as a variation, and how are extras agreed? Building jobs often uncover hidden issues or last-minute changes. Ask how any extra work will be quoted and signed off before being carried out.
• What happens if the project overruns? Delays can happen for many reasons. Find out if there are penalties, revised schedules or extra charges, and how overruns are handled in writing.

For a detailed list of what to expect in your quote, see what should be included in a building quote.

Confirm the written contract and how disputes are handled

Never rely on a handshake or a vague email. A clear written contract protects everyone involved. Take time to go through what is—and is not—covered.

• Will we both sign a written contract? Standard contracts set out the scope, price, payment terms, and what happens if you or the builder want to change something. Make sure you receive a copy before work starts.
• What is the process for resolving disagreements? Ask what happens if you are unhappy with the work or if something goes wrong. Some builders belong to trade bodies or use independent mediation.
• Are warranties or guarantees offered? Find out what is covered—materials, workmanship, or both—and for how long. Ask for any guarantees in writing, and check whether they pass to future owners if you sell your home.
• Is there a cooling-off period? Contracts agreed at your home, by phone or online usually have a 14-day cooling-off period. If urgent work starts immediately, you may still be charged for what has been done.

The Consumer Rights Act 2015 also says services must be carried out with reasonable care and skill, within a reasonable time and for a reasonable price if these are not stated upfront.

Weigh the answers, not just the checklist

A list of questions is only useful if you listen carefully to the answers. You are not just collecting facts; you are judging how clear, open and consistent the builder is.

• Straight answers with specifics build trust. If a builder is vague, impatient or unwilling to put things in writing, that is worth noting—even if their price is attractive.
• Look for gaps or changes. If something is "not stated" or a detail changes from one conversation to the next, ask for clarification. Reliable builders expect scrutiny and do not mind repeating themselves.
• Compare more than price. Matching answers across several builders lets you spot who is most transparent and who might be glossing over important details. Use a comparison tool to see side-by-side facts, such as verified contact details, business history and job types.
• Keep written records. Write down each builder’s answers and keep copies of quotes, emails and contracts. If there are problems later, a written record helps resolve disputes.

You can start your search with builders near you and use the Request Quote tool to send your list of questions to several businesses at once.

Next steps

Write down the details of your project and the questions that matter most to you. Compare builders on Annuvell Local by looking at their trading history, verified contact details and published services. Send your project description and questions to two or more businesses using the Request Quote tool. Take time to weigh the answers and review their written terms before you make any commitment. For extra checks and tips, see finding a reputable builder for an extension or renovation.