London — Neighborhood Profile
Mayfair renovation guide
Mayfair is Grosvenor Estate freehold and Grade II listed. Baily picks one builder fluent in both approvals.
- Permit authority
- Westminster City Council
- Dominant typology
- Georgian townhouse and inter-war mansion block
- Conservation / heritage
- Listed Grade 2
- Regulatory overlay
- Mayfair Conservation Area · Listed Building Consent (LBC) · Grosvenor Estate consent (where freeholder) · Westminster Basement Revision Policy · CIL Westminster £200/m²
- Median property value (2026)
- £2,400,000
- Typical renovation spend
- £250K-£1.2M
Ask Baily instead of Checkatrade
Checkatrade publishes a directory — you still have to call 3–5 contractors, chase quotes, and vet licensing yourself. AskBaily scopes your Mayfair project with AI, then routes you to one builder who has already cleared Westminster City Council permit + overlay checks for the georgian townhouse and inter-war mansion block your home likely is.
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