The Royal Borough of Kensington and Chelsea
Builders in Kensington & Chelsea
Extensions, loft conversions and renovations in Kensington & Chelsea, from a fully insured London building team that understands local planning.
Homes in Kensington & Chelsea
Kensington and Chelsea is defined by stucco-fronted Victorian terraces, mews houses, garden squares and mansion blocks, with a high proportion of flats and listed buildings.
What we build here
High-specification refurbishments, mews house renovations, roof works within policy, and listed-building works with consent.
Planning and conservation in Kensington & Chelsea
Planning and building control in this area are handled by The Royal Borough of Kensington and Chelsea. Most of the borough is within conservation areas, and it has many listed buildings. The Royal Borough's local plan contains detailed policies on basements and on alterations to period properties. Before you design, check whether your property is in a conservation area, is listed or is covered by an Article 4 direction; these change what you can build without permission. Our guide to permitted development in London explains the national rules, and loft conversion regulations covers roof works.
Construction management plans and careful neighbour liaison are standard expectations here.
Typical building costs in Kensington & Chelsea
As a central London borough, Kensington & Chelsea typically sits in the central range of about £3,500 to £4,500+ per m² for residential work, a 25–40% premium over outer London. Budget on top for professional fees (about 15%), consents and contingency (8–15%) and VAT at 20% on extensions and renovations. These are indicative industry ranges for 2026, not a quote; see our London cost guide or request a fixed quote.
Neighbourhoods we cover in Kensington & Chelsea
Questions about building in Kensington & Chelsea
Do you cover all of Kensington & Chelsea?
Yes. We work throughout Kensington & Chelsea, including Kensington, Chelsea, Notting Hill, South Kensington, Earl's Court, Holland Park, North Kensington, Brompton, and across the rest of London.
Do I need planning permission for an extension in Kensington & Chelsea?
It depends on your property. Houses outside conservation areas may be able to use permitted development, while flats, conservation areas and Article 4 directions usually mean an application to The Royal Borough of Kensington and Chelsea. A Lawful Development Certificate gives certainty.
How do I get a quote?
Send the form with your postcode and project details and we will reply by email, usually within one working day.
Nearby: Ealing · Hammersmith & Fulham · Camden · Islington · Wandsworth · all areas
Enquiries across London
Get a quote for your Kensington & Chelsea project
Tell us about your extension, loft or renovation. We cover every London borough from our office at 119 Uxbridge Road, W7 3ST.
- Free, no-obligation quotes
- Fully insured in all building aspects
- Planning, building control and party walls explained