A Battersea kitchen extension is really a layout problem wearing an extension's clothes. The classic 'between the commons' terrace has a narrow galley kitchen tucked into a rear closet wing, cut off from the reception rooms and starved of light. The job is to turn that into a single open-plan kitchen-diner where cooking, eating and sitting share one room that opens to the garden. So before we draw a wall we set the brief: where the island or run of units wants to be, how far the table sits from the hob, which way the cook faces, and where daylight has to land. The envelope — how far the extension projects and how much of the side return it takes — follows that brief rather than leading it. The relationship to the garden is part of the same decision: we set the finished floor level so the kitchen runs flush out to a terrace, with a level threshold at the garden doors, because a step down at the back undoes much of the open, indoor-outdoor feel the extension is built to create.
The move that unlocks the plan is removing the original rear wall, not just adding floor area. On most terraces the extension is modest in itself, but knocking the new space through to the existing back room is what creates the open kitchen-diner people actually want. That means a structural opening across the old rear elevation — typically a steel goalpost or a beam on padstones designed by an engineer — timed and detailed so the kitchen reads as one continuous room rather than a new box bolted onto an old one. Getting the height and position of that opening right is what separates a genuine open plan from a through-lounge with a kitchen at the far end.
Daylight is the make-or-break of a rear kitchen, because the deeper you push the plan the darker the middle gets. A kitchen-diner that extends the full depth of the ground floor can leave the original back room — now the sitting or dining zone — a long way from any window. We plan the glazing as a system: rooflights over the new kitchen to wash light down onto the worktops, glazed doors or a screen to the garden, and sometimes a slot of glazing where the extension meets the retained wall so the join is lit. Orientation matters here; a north-facing Battersea garden needs more rooflight area and a lighter palette than a south-facing one to keep the cooking zone from feeling gloomy.
A kitchen is the most heavily serviced room in the house, and an extension multiplies the servicing to coordinate. Moving the kitchen to the back of the plan means running new drainage to the existing soil stack, positioning the cooker extraction so it can vent without a duct crossing the whole ceiling, and planning water, gas and dense power for an island that may sit away from any wall. The extract route in particular constrains the ceiling design, because a recirculating hood keeps the ceiling clean while a ducted one needs a path out. We fix these runs at design stage, alongside underfloor heating and the position of the consumer unit, so the finished kitchen is not compromised by services that were an afterthought. Many Battersea layouts also draw a utility, pantry or boot room off the main space to keep the noise and mess of appliances out of the open room, and that broken-plan zoning has to be planned into the servicing and the structural grid from the start rather than carved out later.
Comfort in a glazed kitchen is a year-round question, not just a winter one. The same rooflights and garden doors that make the room bright can overheat it on a summer afternoon and lose heat on a winter evening, so the glazing has to be balanced against solar gain, ventilation and insulation. Building regulations set the standards for the new fabric — the walls, roof and floor of the extension, the glazing performance and the ventilation of a room where cooking adds moisture and heat — and we design to them rather than retrofitting compliance. Openable rooflights, cross-ventilation to the garden and the extraction strategy work together to keep a bright Battersea kitchen usable in July as well as January. A solid floor with a screed over the insulation adds useful thermal mass that steadies the temperature, and pairing it with a well-specified glazing coating keeps the peak summer gain in check without darkening the room.
For flats — the mansion-block and converted-house apartments that make up much of Battersea's stock — a new kitchen is usually an internal reconfiguration rather than an extension, and the controlling consent is the freeholder's Licence to Alter. Relocating a kitchen within a flat raises acoustic questions for the dwelling below, waterproofing where wet areas move, and the route of new drainage and extraction within a building you do not solely own. Where the ground-floor unit of a converted house holds the garden and the rear return, an extension can still be possible, but it turns on the lease and the freeholder's structural interest as much as on Wandsworth's planning view. We test which consent regime applies before committing a flat owner to a design.
