Start with a clear project brief
A builder can respond more usefully when the brief is specific. Describe the rooms, intended use, drawings available, approval status, preferred finish and known constraints. Explain whether you will remain in the home and how the site can be accessed.
Ask which information is missing before a firm quotation can be prepared. A contractor who identifies uncertainties gives you something to resolve. Compare that with a price based on assumptions you cannot see.
Check the contractor behind the quotation
Confirm the identity of the person or business you would contract with and the details that will appear on the agreement and invoices. Ask for references relevant to your type of job and, with permission, speak to recent clients about organisation, communication and resolving problems.
If a membership, qualification or registration is claimed, verify it with the relevant body. A logo alone is not enough. For specialist work, check the relevant competency requirements rather than assuming a general building title covers every trade.
Ask about insurance suitable for the proposed work and discuss your own home insurance arrangements with your insurer. Record who is responsible for existing structures, works in progress and any design services. Seek professional advice if the allocation is unclear.
Compare what is included
Put quotations side by side with the same specification. Check materials, preparation, waste, protection, temporary works, services, finishes, VAT and exclusions. Identify who pays professional fees and who arranges approvals.
A quote should make the scope clearer, not require you to guess what “complete” means. Ask how unknown work and changes will be valued. Our cost guide provides a useful comparison framework.
Use a written agreement
Before work begins, agree the scope, drawings, programme, price basis, payment stages and process for changes. Identify who coordinates trades and who you contact about day-to-day decisions. Set out how concerns and disagreements will be handled.
Discuss practical arrangements: working hours, access, security, protection, deliveries, storage, waste and use of facilities. These details matter when people are working in your home for weeks.
Use a contract appropriate to the project and obtain independent advice where needed. A written agreement is particularly valuable when everyone remembers a conversation differently later.
Your printable appointment checklist
- Contracting name and contact details verified.
- Relevant references checked with permission.
- Claimed memberships and specialist registrations verified.
- Insurance discussed and evidence reviewed.
- Current drawings and specification identified.
- Planning and building-control responsibilities assigned.
- Price, VAT, allowances and exclusions recorded.
- Payment stages and change process agreed.
- Site access, protection and communication agreed.
- Completion documents and outstanding-work process listed.
Keep communication and completion practical
Agree a regular update format. A short written note of progress, decisions required and programme changes is often more useful than sporadic verbal updates. Keep the decision log with the contract so instructions remain traceable.
At handover, inspect against the agreed scope and make a dated list of outstanding work. Collect the relevant approvals, certificates, guarantees and product information. Keep a record of how unresolved items will be completed.
This demonstration does not recommend or vet individual contractors. Use the independent consumer resources below and check the actual business you intend to appoint.
Sources & further reading
Research checked 18 October 2026. Follow official guidance and obtain project-specific professional advice.
