Flat Refurbishment Mayfair

Flat refurbishment is the main renewal job in Mayfair. The VOA's count for the wider Strand, St James & Mayfair area records 96% of homes as flats. Some sit in period buildings, since 52% there date from before 1919, and others in blocks built after 1945, including the 23% built in 2000 or later. Either way the flat is renewed inside a building shared with neighbours, so the lease, the managing agent and the block's rules set the programme as firmly as the building work does.

For Mayfair, published UK averages put a full flat refurbishment at £33,000 to £48,000 and a basic one, with budget kitchen and bathroom fittings, at £15,000 to £18,000, and London flats usually cost more (Checkatrade and MyJobQuote, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Mayfair: we refurbish the flat within the terms of your lease and licence to alter, protect the common parts throughout, and a registered electrician certifies the new consumer unit and circuits.

Lease consent and block rules for a Mayfair flat

Before a Mayfair flat is stripped out, the lease is read for what it allows and what it forbids. Alterations beyond decoration commonly need the freeholder's licence to alter, granted through the managing agent, who may ask for drawings, a method statement, the contractor's details and a surveyor's review before anything starts. We prepare the method statement and programme for that pack, so the licence is not held up by missing information and the start date you are given stays realistic.

Block rules then shape each working day. Managing agents set their own hours for noisy work, lift bookings for deliveries and rules on protecting common parts, and these can be tighter than the council's. We line the corridors and lift car, book the service lift for strip-out and deliveries, and carry waste down in sealed bags. Where Westminster is the building control body, it accepts a building notice only if the layout stays unchanged and the Fire Safety Order does not apply, so a Mayfair block with common parts can point to full plans.

Housing in Mayfair

Count the homes in the Strand, St James & Mayfair statistical area and you get about 7,560: 41% built since 1945, 5% between the wars and 52% before 1919, with flats at 96% and houses at 4%.

Floors, wet rooms and leaks into the Mayfair flat below

A new hard floor in a Mayfair flat is where neighbours notice a refurbishment long after it ends. Leases often require carpet or an approved acoustic underlay under timber or stone, and some managing agents ask for a sound test after laying. The VOA count for the wider Strand, St James & Mayfair area puts 52% of homes before 1919 and 41% after 1945, so both kinds of floor turn up in Mayfair. On timber joists we lift the boards, pack the voids with mineral wool and lay a resilient layer, while a post-war concrete slab takes an isolating mat under a floating floor.

Kitchens and bathrooms are renewed inside the flat's footprint, and water is the risk to the flat below. We isolate and cap supplies at strip-out, pressure-test new pipework before it is boxed in, and tank wet areas under the tiles. Waste runs keep their falls into the existing stack, because moving a soil stack in a block needs the freeholder's consent and can affect other flats. Westminster building control treats the fit out of a bathroom or kitchen in one property as minor works, on either a building notice or a full plans application.

Letting a refurbished Mayfair flat: EPC and licensing

If the flat is to be let, the energy rating belongs in the specification. Since 1 April 2018 private landlords may not let on new tenancies with an EPC rating of F or G. Since 1 April 2020 they cannot let or continue to let a property covered by the MEES Regulations below E without a valid exemption. A Mayfair landlord refurbishing a period flat should treat insulation behind new linings, heating controls and secondary glazing as items that protect the letting, not optional extras.

Licensing can add conditions of its own. Westminster's Selective Licensing Designation No. 1 came into force on 24 November 2025 and runs to 23 November 2030 unless revoked earlier. It requires privately rented homes not already licensed as HMOs to hold a licence in 15 wards, so check whether your Mayfair address falls within one before the tenancy starts. The landlord or their agent applies for any licence, and where it sets conditions on the flat's condition, we build that work in while the rooms are still open.

Electrics, heating and fire safety inside a Mayfair block

Inside a Mayfair flat, the consumer unit and the circuits it feeds are renewed as part of the flat, and a registered electrician designs, tests and certifies the new installation. Heating depends on the block: a gas boiler with a flue route the freeholder has approved, electric heating where the building has no gas, or a heat interface unit on a communal system run by the managing agent. Switching between them needs the freeholder's agreement, so the choice is settled before first fix, and where Westminster is building control, it will not issue completion without the electrical and gas certificates.

Newer and taller blocks bring an extra layer. A Mayfair block at least 18 metres high, or with at least 7 storeys, and 2 or more homes is a higher-risk building under the Building Safety Act. There the Building Safety Regulator, not the council, approves building work, although some competent person scheme work can still go ahead without its approval. Under the rules for these buildings, certain scheme types cannot be used in these buildings, so the route is confirmed before work starts. In any block, the flat entrance door and the compartment walls around the flat are fire safety matters for the freeholder or responsible person. We do not change or cut through them without that party's written approval.

• Flat entrance door replaced as a certified fire door set, with the freeholder's written agreement
• Full and basic flat refurbishments within the existing layout
• Electric heating upgrades: high retention heaters, or a heat pump where the building allows

VOA Council Tax stock of properties, March 2025, for the Strand, St James & Mayfair statistical area, which also covers St James's and the Strand. Counts rounded by the VOA.

Before committing to flat refurbishment in Mayfair, it is worth looking at bathroom renovation in Mayfair, flat refurbishment across Westminster, London builders who work inside occupied blocks, fitting a new kitchen inside the flat footprint, our London flat refurbishment page and Combi, System or Regular Boiler.

Why Mayfair Homeowners Choose GS Renovation

Refurbishing a flat in a managed Mayfair building is as much about the neighbours and the managing agent as the rooms themselves. We prepare the method statement and programme a licence to alter needs, protect the lift and common parts, and plan floors and wet areas so nothing reaches the flat below. The founder, Abdelaaziz Saaid, oversees each job, and the registered electrician's certificate and any gas engineer's paperwork come to you at handover, ready for a letting agent or a buyer's solicitor.

• Aftercare and snagging support once the job is finished
• Fire doors and compartment lines left as the building's fire strategy needs them
• Noisy days agreed with the managing agent and flagged to neighbours in advance

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254).