Home Renovation St John's Wood

GS Renovation carries out whole-home refurbishments across St John's Wood, from tired mansion flats and blocks, which make up almost all NW8 homes, to the few period houses and villas. We run the rewiring, replumbing, replastering and structural work as one coordinated programme rather than separate trades.

In St John's Wood, 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 St John's Wood: 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 St John's Wood and bathroom renovation in St John's Wood. With 90% of homes in St John's Wood flats, the soil stack usually fixes where a bathroom can go, and the lease may need the freeholder's consent for either room.

Refurbishing period houses in St John's Wood

A full renovation of a St John's Wood villa or period house usually means stripping back to sound structure, then rewiring and replumbing throughout before anything is covered up. Many of these homes still have long-outdated wiring, tired supply pipes and cracked lime plaster behind later coverings. We replaster, upgrade the services to current standards, and where the layout is dated we reconfigure the rear rooms and service wing to work for how the house is used now.

Where original features survive, cornicing, ceiling roses, panelled doors and cast fireplaces, we protect and restore them rather than rip them out, which matters in a conservation area and to buyers in NW8. Any structural change, such as opening up two receptions with a steel beam, is engineered and signed off by Westminster building control. Sequencing all of this together keeps the dust in one phase and the house moving toward completion on a single programme.

Housing in St John's Wood

Roughly 8,840 dwellings sit on the valuation list for St John's Wood. 10% are houses and 90% flats, and by age 23% predate 1919, 31% are interwar and 46% post-war. Since most homes here are flats, refurbishing a flat in St John's Wood starts with the freeholder's licence for alterations.

Refurbishing an interwar St John's Wood flat under Westminster building control

With 31% of St John's Wood homes built between 1919 and 1939, a full renovation here is often a flat in an interwar block whose services have been replaced piecemeal over decades. Stripping out can reveal old rubber-insulated cable, steel conduit reused for newer wiring and heating pipes buried in concrete screeds, none of which is visible at a viewing. We treat the strip-out as the first survey stage, then fix the specification once the floors and walls are open and the structural engineer we appoint has seen any structure the new plan affects.

Westminster's schedule has a residential refurbishment charge for work below its cost limit, the same on a building notice or a full plans application and with no separate inspection charge, so a whole-flat renovation can go in as one application. At the end, Westminster issues the completion certificate only once fees are paid and the relevant electrical and gas certificates are supplied. On a St John's Wood refurbishment that includes a rewire and a boiler change, both certificates are collected as each trade finishes, and the completion certificate joins the freeholder's licence in the flat's records.

Whole-flat renovations in NW8 mansion blocks

The red-brick mansion flats around St John's Wood renovate differently from the houses. The lease limits what you can change, so altering layout or moving a bathroom usually needs the freeholder's licence to alter and sign-off from the managing agent, and building-management rules will govern access, working hours and the lift. We factor that coordination in from the start so the programme is realistic and the block's other residents are not disrupted.

Sound insulation between flats is a real concern in these blocks, so when we lift floors we improve acoustic separation as part of the works. Rewiring, replumbing and replastering an occupied leasehold flat calls for careful protection of communal areas and tidy daily clean-downs. One team handles the structure, services, kitchen, bathrooms and decoration in the right order, so you deal with a single point of contact rather than chasing separate contractors.

• Structural alterations and load-bearing wall removal
• Project management from first survey to final handover
• Kitchen and bathroom design, supply and installation

VOA Council Tax stock of properties, March 2025, for St John's Wood North and St John's Wood South. Counts rounded by the VOA.

Plenty of St John's Wood projects start with one job and grow, so it helps to see load-bearing wall removal in St John's Wood, home renovation across Westminster, builders in London, how we run a London renovation, home renovation anywhere in London and How to Choose a Builder.

Why Choose GS Renovation in St John's Wood

St John's Wood clients choose GS Renovation because a whole-house refurbishment needs one team holding the programme together, not a dozen trades working in isolation. With our founder's 30+ years on the tools, we sequence structure, services and finishes properly, respect period features and leasehold rules, and keep an occupied home as clean and workable as the job allows.

• Protected routes through the home so you can keep living in it
• One point of contact from first survey to handover
• Original features protected, repaired or reinstated as you want

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.