Flat Refurbishment Westminster

Flat refurbishment is the everyday version of this work in Westminster, where 91% of homes are flats. The blocks range from period mansion blocks and converted stucco houses to post-war estates, and 15% of the City's homes were built in 2000 or later. Whatever the building, a flat is renewed inside rules set by others: the lease, the managing agent, the neighbours above and below, and for landlords, licensing and energy standards.

For Westminster, 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 Westminster: 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.

Mansion blocks, converted houses and newer Westminster blocks

The kind of block sets the constraints on a Westminster flat refurbishment. With 91% of homes being flats and 40% of homes built after 1945, the stock runs from period mansion blocks with shared lifts and porters, through stucco houses divided into flats, to post-war estates and towers. A mansion flat often has solid internal walls, deep timber floors and old risers shared with the flats below. A flat in a converted house may have a stair shared with only two or three neighbours.

Newer blocks bring a different set of limits. Fire compartment walls, sprinkler heads and service risers in a modern building belong to the freeholder's fire strategy, so they are left alone or altered only with written consent. A block at least 18 metres high or with at least 7 storeys, holding 2 or more homes, is a higher-risk building under the Building Safety Act. Building work there needs the Building Safety Regulator's approval before it starts, with no building notice route. Some competent person scheme work is an exception, though not every scheme type can be used in a higher-risk building, so allow for that in the programme.

Housing in Westminster

Around 132,230 homes make up Westminster on the valuation list; 91% are flats and 9% houses, and 48% date from before 1919, 10% from between the wars and 40% from after 1945.

Building control for kitchens, bathrooms and rewires in a Westminster flat

Where Westminster is the building control body, the route depends on whether the layout changes. A building notice can be used instead of full plans only where the work does not affect the layout of the building and is not affected by the Fire Safety Order. The common parts of a block fall under that order, so work touching them, or moving walls inside the flat, goes on full plans. Applications go in online as full plans, building notice or regularisation.

A like for like kitchen or bathroom swap inside the existing footprint, with certified electrics and gas, usually needs no application. Where the refit is notifiable, such as new drainage runs, new extract ventilation or a changed layout, Westminster's minor works charge for a bathroom or kitchen fit out applies. A new consumer unit and rewire inside the flat are certified by a registered electrician, and a boiler swap is carried out by a registered gas engineer. In blocks without gas, electric heating and hot water cylinders are renewed within the flat's own supply. Either way, the certificates go to building control at handover.

Refurbishing a rented Westminster flat to licensing and energy rules

A rented flat has to meet minimum energy standards and may need a licence, so a landlord refurbishment starts from those rules. Three or four sharers from two or more households, or five or more in a purpose-built block, fall under Westminster's city-wide additional HMO licensing, which runs from 31 August 2026 to 30 August 2031. Five or more elsewhere need a mandatory HMO licence. A single household let needs a selective licence in 15 designated wards, under the scheme in effect since 24 November 2025. A licence can bring property conditions with it, so the scope of works should answer them rather than leave them for later. We price those items as a separate part of the scope so you can see them.

On energy, GOV.UK says that since 1 April 2020 landlords cannot let or continue to let properties covered by the MEES Regulations with an EPC rating below E without a valid exemption. For a solid walled period flat, the refurbishment is the point to renew heating controls, insulate under floors that are lifted anyway, and overhaul or secondary glaze sashes, before the new EPC assessment is booked. The assessor then sees finished work rather than a promise.

Lifts, common parts and neighbours in a Westminster block

Getting materials in and waste out is half the planning of a Westminster flat job. Lifts are booked and lined, stair carpets and walls in the common parts are protected, and waste leaves in bags rather than a skip where the street has no room. Noisy work runs inside the block's own hours, and a lease or the managing agent can set those tighter than the council's normal construction hours. Deliveries are timed to the parking bays and the porter's shifts.

Sound and water are the two things that reach the neighbours. Many leases require an acoustic underlay or insulated floor build up before hard floors go down, so check the clause before choosing oak or stone. New bathroom and kitchen waste runs are pressure tested before they are boxed in, because a slow leak into the flat below is a dispute between leaseholders. We give the managing agent a named contact and a weekly programme for other residents.

• Condensation control with extract fans and trickle vents
• Common parts protection: floor sheeting, corner guards and lift lining
• Hard floors, carpet and vinyl laid over a level, sound base

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

If this is your first project in Westminster, these are worth a look: bathroom renovation in Westminster, our Westminster area guide, London builders who work inside occupied blocks, bathroom fitters in London for flats, flat refurbishment anywhere in London and Shower or Bath.

Trusted Flat Refurbishment in Westminster

We work to the lease and the managing agent's rules from the first visit. You get a method statement, a programme and a named contact for the block, and we book lifts, protect common parts and time deliveries around the porter and the parking bays. Inside the flat we coordinate the registered electrician and, where there is gas, a registered gas engineer, and for landlords we write the scope against the licence conditions and the energy rating, so the flat can be relet on time.

• Fire doors and compartment lines left as the building's fire strategy needs them
• Waste cleared as we go, not left piled up outside
• New pipework pressure tested so nothing leaks into the flat below

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