Home Renovation Westminster

GS Renovation carries out whole-house refurbishments across Westminster, from Regency townhouses in Belgravia to period mansion flats in Marylebone and Pimlico. We manage rewiring, replumbing, replastering and reconfiguring dated layouts with a single team, restoring period features while bringing tired interiors up to date.

In Westminster, a full house refurbishment typically costs £40,000 to £150,000 or more (indicative London ranges, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Westminster: we carry the structure, services and finishes as one contract.

The two rooms that cost the most have their own pages, with prices: kitchen renovation in Westminster and bathroom renovation in Westminster. With 91% of homes in Westminster flats, the soil stack usually fixes where a bathroom can go, and the lease may need the freeholder's consent for either room.

Whole-house refurbishment in Westminster townhouses

A full renovation of a Westminster townhouse runs across several floors, and sequencing is everything. We strip back, rewire and replumb the whole house, then replaster and reconfigure layouts that no longer suit modern living, opening cramped lower-ground floors or reworking a warren of small rooms into generous spaces. Where a wall comes out, the engineer we appoint sizes the steel and building control signs it off.

These Georgian and Regency homes carry original cornicing, joinery, fireplaces and staircases that give the borough its character. In conservation areas and listed properties across SW1 and W1, we restore and protect those features rather than lose them, matching mouldings and reinstating detail so the finished house reads as authentically period while working as a comfortable modern home.

Housing in Westminster

The Council Tax list puts Westminster at about 132,230 homes, 91% flats against 9% houses; 48% went up before 1919, 10% between the wars and 40% after 1945. Most homes here are flats, and a whole-flat refurbishment in Westminster works to the lease: the freeholder's licence for alterations, agreed working hours and sound insulation between floors.

Building control and planning for a Westminster refurbishment in 2026

Westminster City Council runs its own building control service, the District Surveyors, and its current schedule of fees and charges took effect on 1 April 2026. For a whole flat or whole house refurbishment that matters because the charge follows the type and value of the work. For residential refurbishment below the value threshold in the schedule, one charge applies on either a building notice or full plans, with no separate inspection charge. Check the current schedule once the scope is fixed rather than relying on a figure from an older quote.

Planning policy has moved too. Following a Partial Review, the current City Plan was adopted by full council on 21 January 2026, so advice written before then may quote superseded policy. For a Westminster refurbishment that touches the outside, such as new windows, a flue terminal or a rooflight, check the current plan and the conservation area position before ordering anything. In a conservation area some alterations need permission that would not need it elsewhere, so replacement windows are one of the first items to check. If the building is listed, consent also covers internal work such as removing panelling or cornices.

Coordinated trades across Westminster homes

The value of one team shows most on a large refurbishment. We sequence structural work, first-fix services, plastering, kitchens, bathrooms and decoration so trades follow each other cleanly rather than clashing. On a Paddington or Marylebone project that might run several months, that coordination keeps the programme tight and the site tidy, which matters when the house sits on a busy Westminster street.

For mansion flats in NW8 and W9, refurbishment works within leasehold rules. We coordinate with the freeholder and managing agent, respect building-management hours and access, and pay close attention to sound insulation between flats when floors come up. Every notifiable electrical and plumbing change is carried out to building regulations and certified by a registered electrician or through building control, so your renovation is compliant as well as beautifully finished.

• Rainwater goods and flashings made good where the works disturb them
• Planning permission and building control coordination
• Complete property refurbishments and whole-house renovations

VOA Council Tax stock of properties, March 2025, for all 24 statistical areas in Westminster. Counts rounded by the VOA.

Plenty of Westminster projects start with one job and grow, so it helps to see load-bearing wall removal in Westminster, our Westminster area guide, a building contractor for the whole job, how we run a London renovation, our London home renovation page and Renovating in a Conservation Area.

Why Choose GS Renovation in Westminster

Westminster homeowners choose GS Renovation because a whole-house refurbishment needs one accountable team, not a string of separate trades. We handle structure, services, plaster, joinery and finish together, protect period detail in listed and conservation-area homes, and work cleanly in occupied streets. Our founder's 30+ years on the tools means the sequencing, the compliance and the craftsmanship are all in hand.

• First fix and second fix planned around a realistic decorating date
• Notifiable electrical work certified by a registered electrician under Part P
• Aftercare and snagging support once the job is finished

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254). Structural design is by the consulting engineer appointed to your project.