Flat Conversions Kentish Town

Flat conversion in Kentish Town starts from a small pool of houses, since the VOA count puts houses at 13% of homes and flats at 87%. The work is splitting a Victorian terrace into self-contained flats, putting right an older conversion that falls short of current standards, or joining flats back into one house. Splitting a house always needs planning permission from Camden, which the owner or their designer applies for, and building regulations approval for the change of use.

In Kentish Town, converting a house into two or three flats is published at £50,000 to £120,000 including professional and council fees, and an England-wide guide puts a straightforward two-flat split at £40,000 to £80,000 in construction alone, which is the part a builder prices (indicative London ranges, Architectural Drawings and Mayfair Studio, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Kentish Town: we build the conversion to the approved drawings, building control inspects the fire and sound separation, and a registered electrician certifies each flat's electrics.

What Camden allows when a Kentish Town house is split

Splitting a Kentish Town house into flats needs planning permission, and Camden's Local Plan decides the mix. Policy H7 requires all housing development, including conversion of existing homes, to contribute to the Dwelling Size Priorities Table and include a mix of large and small homes. A terrace split entirely into studios sits badly with that policy, while a scheme that keeps a family sized flat on the garden floor is closer to what it asks.

Camden applies the nationally described space standard flexibly to homes created by conversion, taking into account the constraints of existing buildings, particularly heritage assets. That flexibility is about the plan, not the construction. Camden's Community Infrastructure Levy also applies to proposals that add an extra dwelling, so the owner settles the levy paperwork before the start date. Once the layout is consented, we build it as drawn, with every kitchen and bathroom placed to drain into a stack.

Housing in Kentish Town

Around 8,940 homes make up Kentish Town on the valuation list; 87% are flats and 13% houses, and 44% date from before 1919, 4% from between the wars and 52% from after 1945. Where most homes are flats, changing the number of flats in Kentish Town needs the freeholder and usually planning.

Room sizes and ceiling heights under the London Plan

London Plan Policy D6 sets the room sizes a new Kentish Town flat is measured against, and a new dwelling includes a conversion. A single bedroom must be at least 7.5 sq.m in area and 2.15m wide, and a double at least 11.5 sq.m in area. At least 75 per cent of the flat should have a floor to ceiling height of 2.5m. In a Victorian terrace the top floor and the back addition are where those numbers get tight.

The ceiling height rule matters most for the builder. Where a new floor build up is needed for sound insulation, every millimetre of acoustic layer and screed comes off the room height. So the designer and the structural engineer agree the floor and ceiling build ups before the room sizes are finalised. We check the heights on site before first fix, because a Kentish Town conversion that loses height to a thicker floor may no longer match its consent.

Fire and sound separation between Kentish Town flats

The separating floors and walls are the heart of any Kentish Town conversion, because each flat has to be separated from the next for fire and has to keep its noise to itself. Approved Document E sets the sound insulation for flats formed by material change of use: 43 dB airborne for walls, floors and stairs, and 64 dB maximum impact for floors and stairs. Old timber joists with lath and plaster below do not usually reach that without a new ceiling and an isolated floor.

We build those details to the drawings: resilient bars or independent ceilings, mineral wool in the joist zone, a floating floor above, fire rated boarding and sealed service penetrations. Pre-completion sound testing by an independent sound tester proves the result, so the floors and walls are complete before the test. Under Part B the common stair becomes a protected escape route, with fire doors to each flat, a fire detection system and smoke seals fitted and recorded for the building control file.

Older Kentish Town conversions and joining flats back together

Some Kentish Town houses were split decades ago, before today's standards, and their separating floors, stair enclosure and fire detection show it. Bringing an older conversion up to date is the same build as a new one: an independent ceiling and floating floor between flats, a protected stair with fire doors to each flat, and interlinked detection. Camden's additional licensing can also reach converted buildings that do not meet the 1991 or later Building Regulations where less than half of the flats are owner-occupied, and our HMO conversions page covers that licence.

Going the other way, flats in a Kentish Town terrace are sometimes joined back into one house. Camden Local Plan Policy H3 resists development that would involve the net loss of two or more homes, unless it creates large homes, adapts affordable homes or enlarges sub-standard units to meet space standards. Merging two flats loses one home, so it falls outside that test, though the owner should still confirm with Camden whether planning permission is needed.

• Separating walls built and lined for sound between flats
• Fire stopping round every pipe and cable through a separating floor
• Insulation to the walls, roof and floors the conversion touches

VOA Council Tax stock of properties, March 2025, for Kentish Town West and Kentish Town East. Counts rounded by the VOA.

Useful next reading for a flat conversions project in Kentish Town: structural alterations in Kentish Town, flat conversions across Camden, builders in London who take on conversions, refurbishing a flat that has already been converted, how we handle flat conversions across London and Adding Value to a London Flat.

Why Choose GS Renovation in Kentish Town

A conversion packs structure, fire separation, acoustics, drainage and several kitchens and bathrooms into one old house, and the order of those trades decides whether the sound test and the completion certificate go smoothly. We programme the separating floors and the stair enclosure first, then the services, then the finishes, flat by flat. You get a written quotation after a visit, a written programme, one site manager, and a file of test results and certificates for the building control sign-off.

• Common parts, bin stores and cycle stores finished to the planning conditions
• Full plans application to building control, never a building notice
• One point of contact on the phone, not a call centre

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.