Federation of Master Builders

Building and consumer protection · Building trade association

The Federation of Master Builders is a trade association for building businesses. Its Master Builder membership involves business checks and an inspection of work, rather than being an automatic paid listing.

Checked November 2026Official sources below.

What it covers and whether it is required

FMB membership is voluntary. It is not a building control approval, a statutory builder’s licence or an automatic warranty for every project a member undertakes.

Joining requirements and costs

FMB’s published joining process includes trading history, credit and director checks where relevant, evidence of public liability insurance and a site inspection if initial checks are passed. The application team confirms eligibility and the work to be inspected.

Check the current fees with Federation of Master Builders before applying. Ask whether the quotation includes application, assessment, renewal and any per-job charges. Use published fees or ask for a written quotation.

What it means for homeowners

Check the builder in FMB’s own directory and use a written contract with a clear scope. If a building warranty is proposed, ask who provides it and whether your contract has actually been accepted for cover. Association membership alone does not establish that.

How to check a claim

Official member, card or certificate check: Federation of Master Builders.

Match the record to the named person or contracting business. Check the current scope, not just a logo on a van or an old certificate. If the public record does not show the detail you need, ask the body to confirm it before appointing the business.

Where the scheme applies

UK building businesses. Local building control, planning and specialist trade registration requirements still apply in each nation.

Common questions

Does FMB membership mean my extension has a warranty?

Not by itself. Ask for the specific warranty policy and evidence that the project is covered, as well as checking the builder’s current membership.

How do I check Federation of Master Builders status?

Use the official verification service linked in this guide. Match the person or legal business name, current status and relevant work category. For a guarantee, check the document issued for your contract as well.

Official sources

Sources checked November 2026. Scheme rules can change; confirm current requirements before applying or signing a contract.