Kitchen Extensions Camberwell

In Camberwell a kitchen extension starts with a plain split in the housing: 85% of homes are flats and 15% are houses, and 13% of all homes are terraced houses. The terraces are where a side infill or rear extension can use householder rules. A flat has no householder permitted development rights, so a ground floor flat that wants a bigger kitchen needs planning permission and usually the freeholder's consent. We build the shell, the steel, the roof and the glazing, then fit the kitchen in the same run of work.

In Camberwell, a rear kitchen extension of about 30 square metres typically costs £45,000 to £97,500 excluding VAT, or £60,000 to £100,000 for a side return (indicative London ranges, Resi, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Camberwell: the structural engineer we appoint designs the foundations and steel, we build the room and fit the kitchen, and a registered electrician certifies the electrics.

What a Camberwell terrace can add at the back

Terraced houses are 13% of Camberwell homes, and on a terrace a kitchen extension can fill the side passage beside the back addition, run off the end of it, or do both. Southwark's Householder SPD says a terraced or semi-detached home can go back by up to 3m in depth with a maximum height of 4m without planning permission. That matches the national limit of three metres beyond the original rear wall for any house that is not detached.

The side infill is tested separately. Under the national rules it counts as a side extension, so it must be single storey and no wider than half the width of the original house. A wraparound that does both has to meet both sets of limits, which often pushes it into a planning application. If your plans need more than the permitted route allows, the programme gets a decision period before we can order steel. Knowing the route at the start tells you when groundwork can begin and when the kitchen supplier should deliver.

Housing in Camberwell

Take the 13,560 or so homes the valuation list gives Camberwell: 85% flats, 15% houses, 34% from before 1919, 7% interwar and 56% post-war. Most homes here are flats, and only a ground floor flat in Camberwell with its own garden can extend its kitchen.

Extending inside the Camberwell Green Conservation Area

Plan on a planning application for a rear kitchen extension in the Camberwell Green Conservation Area. Southwark's Householder SPD says building a single storey rear extension without planning permission is not applicable to homes in a Conservation Area, and the national rules require householder permission for every side extension on such land. The area appraisal adds that rear extensions should normally be no more than one storey in height. The area was originally designated in February 1981. It is not the only conservation area in SE5, so check Southwark's conservation area map for your street.

Two practical results follow for the build. The extension normally stays at ground floor level, so the kitchen and dining space come out of one storey, and the roof becomes the main place to bring in light. The SPD also says UPVC will not be permitted in any of the borough's Conservation Areas, even to the rear of a property, so the doors and windows are timber or metal. Those frames carry a longer lead time, which we put into the programme from the outset. Your designer draws the extension against the neighbouring rear walls, because the appraisal is about fit with the area.

Keeping half the garden behind a Camberwell house

Southwark's Householder SPD, which the Cabinet decided to adopt on 07/07/2025, says rear extensions must not take up more than 50% of the total rear garden space. On a Camberwell terrace with a short garden, that rule, not the kitchen wish list, can set the outer wall. Measure the garden before the kitchen layout is drawn, because the island or the dining table may have to move sideways into the infill instead of backwards. Settle the footprint before the elevations are drawn, since a late change of depth means redesigning the steel too.

The footprint also shapes the building work. A full width extension needs a longer steel across the back of the house, and where it bears on or cuts into the party wall, the structural engineer we appoint designs that bearing. The SPD notes that certain works may need a Party Wall Agreement with neighbours, separate from any planning permission, and serving the notices is for you as the building owner. On a terrace, materials often come through the house itself, so we agree the route, the protection and the working days with you at the start.

Drainage, steel and fitting the Camberwell kitchen in one programme

The order of work is fixed by the ground and by the structure. Camberwell's housing mixes post-war estates with Georgian and Victorian townhouses, and in the older houses the drains under a side passage can be shared runs that need a camera survey before the slab is poured. Where a public sewer runs under the footprint, building over or near it needs Thames Water's agreement first. Once the drains are settled, the back wall is opened and the steel goes in to the engineer's design, with temporary props holding the floors above.

Because the kitchen is ours to fit as well, the sink, dishwasher and cooker positions are fixed on the drawing before the floor is laid. Waste falls, the extract route and the socket heights are set while walls are still open, and the roof lights are placed so they do not land over a wall unit. The same team moves from plastering to fitting, so the kitchen installation on a Camberwell job follows straight on in the programme rather than waiting for a separate firm.

• Cooker hood extraction ducted through the roof or flank wall
• Flat roofs with rooflights or a roof lantern over the kitchen
• Utility rooms and larders at the back of the extension

VOA Council Tax stock of properties, March 2025, for Camberwell North, Camberwell Green and Camberwell South. Counts rounded by the VOA.

If you are weighing up options for your Camberwell property, it is worth reading kitchen renovation in Camberwell, kitchen extensions across Southwark, fitting the kitchen itself, how building control inspects an extension, how we handle kitchen extensions across London and Planning a Kitchen Island.

Why Choose GS Renovation in Camberwell

You deal with one firm for the whole job: the drains, the foundations, the steel to the structural engineer's design, the brickwork, the roof and the kitchen itself. That keeps the service positions tied to the units you chose, so pipes are not moved after plastering. We give you a written programme and the construction details your designer and any party wall surveyor ask for. Our founder brings more than thirty years of hands-on building to the details that go wrong in old brick, such as bearings and flashings.

• Building control and Part P certificates handed over together at the end
• Kitchen layout agreed before the foundations, so the services land in the right place
• Dust screens and floor protection in occupied homes

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.