Flat
refurbishment
in Mayfair, W1
Architects, Engineers, Surveyors & Builders Under One Roof.
One Studio. One Contract. One Team.
Independent surveying by our sister practice, Hampstead Chartered Surveyors (RICS Firm No. 923064)For flat refurbishment in Mayfair, plan the rooms alongside the building they belong to. Consider services, floor finishes and fitted interiors together with the lease, shared access and retained features.
Flat Refurbishment in Mayfair: What You Need to Know
For a flat in Mayfair, read the lease and identify the landlord or managing agent before agreeing alterations. Written consent or a Licence to Alter is required where the lease and proposed work call for it; do not assume the same requirements for every building. Check shared floors, walls, service routes and access conditions. Planning and listed-building requirements are separate checks with Westminster.
London's most exclusive residential neighbourhood. Mount Street, South Audley Street, and Grosvenor Square. Westminster conservation area with many Grade I and II listed buildings. Ultra-prime property market. A refurbishment in Mayfair coordinates the layout, mechanical and electrical services and finishes with the condition of the building. The agreed scope determines what is retained, repaired or replaced, including the treatment of original period features.
Our Mayfair refurbishment projects are managed through a single point of contact, coordinating architects, structural engineers, M&E specialists, and specialist subcontractors. We work within Westminster's planning and building control requirements against the agreed scope and programme.
Mayfair flat refurbishment has a postcode within a postcode: the prime flats of Mount Street and South Audley Street, homes whose lease, any applicable estate conditions and statutory consent requirements should be checked before the design is fixed. These are the apartments that set the tone for W1 — richly-detailed red-brick and stone buildings where the refurbishment must honour the architecture it sits inside.
Beyond those streets, the flat stock runs across grand Georgian terraces on the garden squares, converted mews and the mansion blocks — much of it listed, most of it leasehold under estate management — and in the blocks a refurbishment coordinates structure, acoustics and any applicable estate consents in support of an exacting finish. The combination is why Mayfair work is as much about consents as construction.
Our headline range for a flat refurbishment in Westminster is £60,000–£110,000 excluding VAT, mirroring the London-wide band for a full two-bedroom refurbishment. A Mayfair flat is quoted against its lease, its listing and its block — the three documents that decide what the money can actually buy. We read all three before we sketch anything.
A lateral apartment brief beyond the finishes
For a Mayfair mansion flat, locate shared risers and survey the floor construction before moving wet areas or choosing heavy finishes. Coordinate sound control, door thresholds and fitted joinery on the same drawings; establish the lease requirements and delivery route before procurement.
Flat Refurbishment in Mayfair: Applied to the Local Stock
Mayfair sits within the Mayfair Conservation Area; Westminster scrutinises external change exceptionally closely and the Grosvenor Estate adds a consent layer on top of planning.
Sources: Grosvenor — Belgravia & Mayfair Estate Management Schemes: alterations guidance (2026)
What a Flat Refurbishment Involves
Refurbishing a flat means renovating inside a building you share — so the job is as much about leases, neighbours and building rules as it is about kitchens and finishes. We plan every project around the consents your lease demands and the protocols your block expects, then deliver the technical work under one fixed-price contract. A typical scope covers the elements below.
- Licence to Alter — lease review, application pack and freeholder’s surveyor queries handled on your behalf
- Acoustic build-up — separating floors and walls upgraded to meet Building Regulations Part E and any stricter freeholder schedule
- Wet-room tanking — certified waterproofing beneath every bathroom, flood-tested before tiling and covered by a 12-month defects period
- Rewire & replumb — new circuits, pipework and heating, coordinated with the building’s risers and stacks
- Layout changes — internal openings engineered, approved by building control and cleared with the freeholder where the lease allows
- Kitchens & bathrooms — designed, supplied and fitted to the specification tier you select
- Period detail — cornicing, sash windows and fireplaces retained and repaired in conversion flats
- Block protocols — lift protection, booked deliveries, restricted noisy hours and daily cleaning of communal areas
How We Run Your Project
Six stages, with the consent requirements and their effect on the programme considered before work starts.
- Survey & lease review — we measure the flat, inspect the services and read your lease to identify exactly which consents apply.
- Design & consents — our architects develop the layout while the Licence to Alter application runs in parallel, not afterwards.
- Fixed-price contract — an itemised specification agreed in full, with the acoustic and tanking details written in.
- Strip-out & first fix — soft strip, structural openings, cabling, pipework and the acoustic carcass, all removed and delivered through agreed routes.
- Second fix & finishes — kitchen, bathrooms, joinery, flooring and decoration.
- Testing & handover — snagging, certification and reinstatement of any communal areas before the keys come back to you.
Read the full flat refurbishment guide for flat typologies, specification tiers and the Licence to Alter process in detail.
Read the lease and identify any required freeholder consent or Licence to Alter for the proposed work before it is programmed. Planning permission, listed-building consent and Building Regulations are separate checks. Flats do not share the householder permitted-development rights available to houses, but that does not mean every external repair needs an application: like-for-like window replacement may not need planning permission, subject to the property and local requirements. Check the actual alteration, including any effect on a listed building's special interest. Our planning guide library explains the separate approval routes.
Why Hampstead Renovations
Flat refurbishment rewards a team that already knows what freeholders and managing agents will ask for. Design is led by our in-house RIBA Chartered Architects, lease and party-structure matters are supported by RICS surveying through our sister company, Hampstead Chartered Surveyors, and the build is carried out by our own long-standing teams. Every contract is fixed-price on JCT terms, backed by £10M public liability insurance — the level major London freeholders require — plus a 12-month defects period. Enquire before 2pm on a weekday and we will call you back the same day.
What does a flat refurbishment cost in Mayfair?
A flat refurbishment in Mayfair runs £900–£1,700/sqm excluding VAT, and a full two-bedroom refurbishment typically lands between £60,000 and £110,000. Most programmes take 16–32 weeks on site. A written scope and site assessment are needed before any project price can be fixed.
| Scope of work | Guide rate | Typical total |
|---|---|---|
| Full flat refurbishment (2-bed) | £900–£1,700/sqm | £60,000–£110,000 |
| Typical programme | 16–32 weeks on site | |
Guide rates exclude VAT and are set by depth of work, not by property type. Compare scopes in our London refurbishment cost-per-square-metre guide.
Flat Refurbishment in Mayfair: Questions
What defines a flat refurbishment on Mount Street or South Audley Street in Mayfair?
Coordinate the retained interior, proposed layout and shared building services. Establish the lease and any applicable estate requirements for the actual property, and assess planning and listed-building consent separately. These checks inform the drawings and scope before work is programmed.
How much does a flat refurbishment cost in Mayfair?
Our Westminster headline range is £60,000–£110,000 excluding VAT, in line with the London-wide band for a full refurbishment of a two-bedroom flat. Mayfair projects are then priced individually — lease terms, listing status and block requirements move the figure more than square footage does.
Is refurbishing a Mayfair flat mostly a consent exercise?
The design and construction scope matters alongside the consent checks. Plan the layout, retained features, services and finishes, then assess any planning, listed-building or lease requirements for those alterations. The applicable approvals, building condition and procurement lead times together inform the programme.
What kinds of buildings hold Mayfair's flats?
The stock runs from grand Georgian terraces on the garden squares to discreet mews houses and prime mansion flats — much of it listed, and most of it leasehold under estate management. Each building type gives its flats a different set of possibilities and constraints.
How do you handle structure and acoustics in a Mayfair mansion flat?
As part of one design, never as afterthoughts. Mansion flats here are leasehold projects where structure, acoustics and estate consents sit alongside an exacting finish — so the floor build-ups, party-wall treatments and services routes are engineered together with the interior scheme they serve.
Relevant Completed Flat Refurbishment Projects
Local character & heritage: renovating flats in Mayfair
Mayfair sits in the City of Westminster, and a large share of its homes are leasehold flats — within grand Georgian townhouses of the Grosvenor Estate, much now commercial or flats. Refurbishing one is a full interior project: reconfiguring the layout, renewing services and finishes, and often combining or reworking rooms within the existing footprint.
The work runs under the lease, so the freeholder's or managing agent's consent sits alongside Building Regulations and party-wall notices may be needed for qualifying work; external elements such as windows stay controlled in conservation areas. Because a very high proportion of buildings are listed and the Grosvenor Estate manages many leases, we coordinate the lease, the freeholder and the build as one fixed-price contract.
Mayfair heritage & architecture: Renovating a flat · Kitchens in period flats · Licence to alter · Mansion flats · Conservation areas · Roof developments & conservation
Flat Refurbishment in Mayfair: Planning & Local Context
Westminster City Council · W1
Planning for flat refurbishment in Mayfair
Flat refurbishment in Mayfair sits across two consent regimes: Westminster City Council for planning and building control, and your freeholder for a licence to alter covering structural changes, new services and floor build-ups — essential within Mayfair's conservation areas and most mansion blocks.
Westminster City Council context
Check the address and proposed work with Westminster. Confirm the conservation-area boundary, any Article 4 direction and whether the building is listed. Listed-building consent may be required for alterations affecting its special interest, including internal work. An Article 4 direction applies to specified properties and types of development; it does not make every refurbishment a planning application. Assess Building Regulations and any lease or estate consent separately.
Building Regulations
Flat Refurbishment in Mayfair must satisfy Building Regulations — covering sound insulation to Part E, fire compartmentation to Part B, and certified electrical and plumbing works. Our in-house engineers manage Building Control from initial notice to completion certificate.
Recent work & local links
See recent Mayfair work: Chesterfield Street, Mayfair Grosvenor Street, Mayfair. Explore our Kitchen Renovation Loft Conversions in Mayfair, or the Mayfair hub · Refurbishment Company in Mayfair.
Planning and building-control submissions follow the address and agreed scope. View our planning track record →
Guides & Local Reading
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