Kitchen Extensions Slough

In Slough, a kitchen extension on a terrace or a semi means a single storey room off the back, and where it needs planning permission the council's guideline caps how far it projects. Terraced houses make up 34% of Slough's homes, with semis and detached houses at 27%, so your house type sets the kitchen's size before anyone draws it. Flats, 37% of homes here, have no householder permitted development rights. We build the shell, the steel into the house, the drainage and the kitchen itself as one programme.

For Slough, on London-derived ranges 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; Berkshire work generally runs below that. GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Slough: 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.

How deep a Slough kitchen extension can go at the back

House type sets the depth when the kitchen needs planning permission. Under guideline EX20 a single storey rear extension in Slough can reach 3.65 metres on a terrace and 4.25 metres on a semi or a detached house, measured from the rear main wall of the original house. Permitted development has its own national limits, which your designer checks separately. The guideline depth is where the kitchen plan starts. An island, a table and a full run of units all have to sit inside it, so we set the units out against that depth instead of drawing a room first and cutting it back later.

The height on a residential boundary is capped too. Guideline EX21 keeps a flat roof on the boundary line in Slough to 3 metres in general, and a pitched roof to 3 metres measured halfway up its slope. On a terrace that decides the ceiling line inside, how thick the roof build-up can be and where the roof lights go. We agree the roof type with your designer before any steel is ordered, because changing it later moves the beam levels.

Housing in Slough

On the valuation list Slough counts about 57,360 homes, 37% flats and 63% houses; 5% predate 1919, 20% are interwar and 73% post-war. 34% of homes here are terraced; a terrace kitchen extension in Slough starts in a narrow side return.

Why your Slough garden depth can limit the kitchen

The garden left behind matters as much as the room you add. Where the kitchen goes through a planning application, Slough will not permit a rear extension unless a one bedroom house keeps 7 metres of usable garden behind it. A two or three bedroom house keeps 9 metres, and a house with four or more bedrooms keeps 15 metres. On a short plot that rule, and not the depth guideline, can be what sets the size of your new kitchen.

Rainwater is one reason for those depths. The council says they are set so that soakaways can be built for surface water from approved extensions, and a soakaway needs to sit at least 5 metres from the finished extension. For you, the water off a new flat roof or glazed roof has to go somewhere that has been planned from day one. We mark the soakaway position alongside the drainage runs at the start of the job, so the garden is only dug up once.

Extending again where a Slough house already has a back addition

An existing single storey addition uses up part of your allowance. Slough adds the old depth and the new depth together and measures the total against the guideline, and building one extension beyond another to get past that limit is not allowed. One answer is to demolish the old addition and rebuild the back of the house as one kitchen, inside the same combined limit. That also clears away tired roofs, cold walls and the step between two floor levels.

Rebuilding changes the order of work. The old structure comes down, new foundations and walls go up, and then the steel that carries the rear wall of the house goes in so the back can be opened into the new room. The extension itself needs building regulations approval, and Slough Borough Council says removing a wall or a chimney will probably need it too. We give your designer a programme so planning and building control are both settled before the demolition date.

Upton villas, main road houses and the Slough flat roof rule

Some Slough streets carry extra weight. The borough has five conservation areas, among them Upton Park and Upton Village, Colnbrook, and Sussex Place and Clifton Road. In a conservation area national rules remove permitted development for side extensions, so a side return or wraparound kitchen there needs a planning application. Parts of Burnham Lane, Langley Road, London Road and Upton Court Road are Residential Areas of Exceptional Character, where Policy H12 refuses extensions that would change the scale and nature of the property. There, the brick, roof shape and glazing pattern need to suit the house.

The roof over a single storey kitchen cannot become somewhere to sit. Slough's guideline EX23 rules out balconies and terraces on a flat roof over a single storey rear extension. If a flat roof suits your kitchen, we build it for roof lights or a lantern with a plain upstand and no railing. Where a bedroom window looks out over it, agree early how the roof lights will be cleaned and the covering maintained, so nobody is tempted to treat the roof as a terrace later.

• The kitchen itself fitted under the same contract as the build
• Wet underfloor heating laid in the new screed
• Soil stack and gully rerouting beneath the new floor

VOA Council Tax stock of properties, March 2025, for all 15 statistical areas in Slough. Counts rounded by the VOA.

Once you know the scope of the kitchen extensions in Slough, it helps to read kitchen renovation in Slough, kitchen extensions in Windsor, a wraparound kitchen-diner, how building control inspects an extension, our London kitchen extensions page and The Party Wall Act.

Trusted Kitchen Extensions in Slough

A kitchen extension joins two trades that are often split: the structural shell and the kitchen inside it. We run both, so the steel, the drainage runs, the floor levels and the service positions are set out for the units you have chosen rather than guessed. The structural engineer we appoint issues the calculations and we build to them. We book building control inspections as each stage is ready, and the kitchen fit-out follows on the same programme without a second contractor arriving.

• Registered in England, Companies House no. 14611254
• One contract for the groundworks, the steel and the kitchen fit
• New floor level matched to the existing house, with no step at the opening

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.