A kitchen extension in Ealing is really a room-making exercise at the back of a house that often has a long garden to work with. On an Edwardian bay-fronted terrace the original plan runs front room, middle room, then a narrow rear kitchen beside the closet wing; the extension turns that tail into a single kitchen-diner that steps out to the garden. The generous plot depth typical of Ealing tempts a deep footprint, but the useful measure is not maximum area — it is how much of that new space is genuinely lit and usable. We set the depth against the daylight reaching the retained rooms and the neighbour relationship, so the kitchen-diner reads as one bright room rather than a deep, dim box.
The defining technical problem is daylight, because pushing the kitchen out at the back is exactly what darkens the middle of the house. The original middle room, now sitting between the new kitchen and the front of the plan, loses its old window to the extension and can turn gloomy unless the roof is doing real work. This is where the roof-light strategy earns its place: a run of rooflights over the rear zone, or a glazed lantern set over the dining table, drops daylight deep into the plan and back towards the retained rooms. We model where the light lands at different times of day, so the glazing is placed to brighten the parts of the kitchen-diner that the rear doors cannot reach.
The threshold to the garden is the second decision that makes or breaks a kitchen-diner. Ealing's long gardens are the reason to extend in the first place, so the connection between the cooking-dining floor and the terrace outside should be as flush as the drainage will allow. A level threshold — a slim upstand with a drainage channel outside the doors, the internal floor carried out to a matching paved level — lets the room read as continuous with the garden and makes the space feel far larger than its footprint. We detail that junction carefully because it has to keep water out while staying flat, and it governs the choice between sliding, bi-fold and fixed glazing across the rear.
A kitchen is a serviced room, and that is what separates this project from a plain rear extension. The layout has to resolve the sink and any island against the available drainage falls, route an extract for the hob, and place the utility, boot room or pantry so the working kitchen is not cluttered by everything a family stores. On a terrace the soil and waste connections usually run to a shared drain, so the position of the sink run and the island is partly fixed by where the pipework can fall, and an island with a second sink or a hob only adds to that constraint. We plan the servicing at the same time as the layout, so the island ends up where the cook wants it and the drainage still works, rather than the pipes dictating the plan after the event. Getting the working triangle, the seating and the routes to the garden and the utility to sit comfortably together is the quiet craft of a kitchen-diner.
Large areas of rear and roof glazing bring their own thermal problem: a south or west-facing kitchen-diner with a full-width glazed rear and a lantern overhead can overheat badly in summer if the glazing is left to do as it pleases. The design has to balance the daylight the room needs against solar gain, using the orientation, the proportion of glass, solar-control glazing where it helps and, on the roof, the difference between vertical and horizontal glazing. Underfloor heating usually suits the open kitchen-diner far better than radiators, freeing the walls for units and giving an even warmth across a room that opens to the garden. Opening rooflights, a cross-draught to windows at the front of the plan, and shading such as an integrated blind on a lantern all help the room shed heat on the hottest days. We size and zone that heating and ventilation as part of the layout, not as an afterthought, so the finished kitchen-diner is comfortable through the year rather than only in the milder months.
From there the route through Ealing's process is a coordinated one. We survey the house and garden, test the kitchen-diner depth against the daylight to the retained rooms and the neighbour's amenity, and develop a design the council can support — resolving the roof glazing, the garden threshold and the servicing together. We then produce the planning drawings and, once the principle is settled, the building regulations package covering structure over the new opening, drainage, ventilation, insulation and the glazed thresholds. Where the extension runs to a boundary the Party Wall etc. Act 1996 is handled in parallel, and on a house within one of Ealing's conservation areas we prepare the supporting case for the roof and glazing alongside the drawings. The result is a kitchen-diner that opens the house to its garden without leaving the middle of the plan dark.
