Kitchen Extensions Leatherhead
Rear, side return and wraparound kitchen extensions in Leatherhead, the room, the services and the kitchen built as one job.
- Rated 4.9 from 31 reviews on MyBuilder
- Guide from £45,000 (London-derived)
- Free site survey, itemised quote
A kitchen extension in Leatherhead usually starts from the house type. The VOA list puts 15% of homes here in terraces and 35% in semi-detached or detached houses, so the choice runs between a side return on an older terrace with a back addition and a rear or wraparound addition on a semi. We build the shell, bring the steel into the existing back wall, run the new drainage and fit the kitchen as one programme, with Mole Valley's 2025 extension guidance shaping the design before we start.
For Leatherhead, 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; Surrey work generally runs below that. GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Leatherhead: 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.
Price guide
| Work | Indicative range |
|---|---|
| Rear kitchen extension, about 30 square metres, ex VAT | £45,000 to £97,500 |
| Side return kitchen extension, standard to high specification | £60,000 to £100,000 |
| Wraparound kitchen extension, standard to high specification | £80,000 to £130,000 |
| Side return build rate, per square metre of new floor | £2,400 to £3,200 |
| Kitchen supplied and fitted within the extension | £5,000 to £14,000 |
| Structural engineer's fee | £950 to £2,500 |
Indicative London ranges (Resi, MyBuilder and Checkatrade, 2026), not a quotation. Surrey work generally runs below the London figures; your price follows a site visit. Prices checked September 2026. Full breakdown: Extension Cost and Planning Guide.
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Leatherhead range: choose above

Mole Valley judges Leatherhead extensions against its 2025 guidance
The Design Guidance for House Extensions SPD (2025) is the document your designer should read before drawing anything for a Leatherhead house. It deals with daylight and sunlight, with overlooking and overbearing development, and with single-storey and two-storey extensions. For a kitchen that means the height of the new flank wall, the pitch or parapet at the boundary and the position of any side window all get tested against a neighbour's outlook.
In practice the tightest pinch point is the shared boundary on a semi or a terrace. A tall parapet right on the line can take light from the next kitchen, and a clear-glazed side window can look straight into a garden. We price the version your designer settles on, so it pays to test those points early. Changing a wall height after the steel is ordered costs time and money.
Housing in Leatherhead
Take the 6,970 or so homes the valuation list gives Leatherhead: 44% flats, 56% houses, 14% from before 1919, 16% interwar and 69% post-war. A detached house in Leatherhead can set its kitchen extension where the garden gets the best light, with the drain run the main limit on the footprint, and 19% of homes here are detached.
Leatherhead has its own design code alongside the district guidance
Mole Valley's 2025 Design Code SPDs give advice for smaller developments and householder applications, and Leatherhead has a separate code of its own. So a kitchen extension here can be read against two documents: the district extension guidance and the Leatherhead Design Code. Your architect or designer handles that reading and the drawings; we build to whatever consent comes back and keep the drawings and programme in step. Reading both early avoids a redesign later.
Design judgement tends to concentrate on what the public side of a house shows. A wraparound that turns the corner onto a side passage, or a side return visible from the street, is more exposed than a flat rear addition hidden behind the house. Material choices such as brick match, roof covering and the colour of the glazing frames are the details worth agreeing in writing with your designer before work begins.
The larger home extension route for Leatherhead houses
Some single-storey rear kitchen extensions in Leatherhead can use the larger home extension route instead of a householder planning application. Mole Valley says it allows rear additions of up to eight metres on a detached house and six metres on other houses, after the owner notifies the council. The council then has up to eight weeks to decide whether the proposal complies with the regulations. Your designer prepares the notification and its drawings.
That notice period belongs in the programme. We do not order steel until the decision is in, because a refusal would mean redrawing. The route covers single-storey rear additions only, and it is not available in a conservation area such as the Leatherhead Conservation Area. A modest side addition may fall within ordinary permitted development, while a wraparound is tested against both the side and rear limits and usually needs an application. Flats have no householder permitted development rights, so an extension off a flat always needs planning permission.
Noisy work on a Leatherhead kitchen extension keeps to set hours
Mole Valley permits noisy construction work from 8am to 6pm Monday to Friday and from 8am to 1pm on Saturday, with no work on Sunday. On a kitchen extension the loud days are predictable: breaking out the rear wall, digging and concreting the foundations, cutting the opening for the steel and disc cutting blocks or paving. We book those stages inside the weekday window. Fitting the kitchen, by contrast, is mostly quiet work.
Quieter trades run on longer hours. Mole Valley allows non-noisy work from 7.30am to 8pm on weekdays and 8am to 8pm on Saturday, which suits first fix wiring, plastering and the kitchen fit itself. Deliveries to a Leatherhead site cannot arrive before 7.30am either, so the steel lorry and the skip swap are booked after that time. Telling your neighbours the loud dates in advance keeps things calm, and it helps if the skip permit and the parking bay are sorted before the first loud week.
- Foundations, drainage and slab with the kitchen services cast in
- Cooker hood extraction ducted through the roof or flank wall
- Boiler relocation and flue changes on the enclosed rear wall
VOA Council Tax stock of properties, March 2025, for Leatherhead North and Leatherhead South & Ashtead South. Counts rounded by the VOA.
Why Choose GS Renovation in Leatherhead
We run the whole extension ourselves: the groundwork, the shell, the steel and the kitchen fit-out, so the room is finished by one team to one programme. The structural engineer we appoint sizes the steel, and we build to those calculations. We coordinate the building control inspections and keep your designer's drawings in step with what goes up on site. You get one contact from strip-out to handover. Abdelaaziz Saaid, the director, has more than thirty years on the tools.
- Cooker extract taken outside through the new roof or flank wall, not recirculated
- Screed left to dry before the kitchen floor finish goes down
- Photographs kept at each stage for your records
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
Saaid is the best craftsman I have worked with. He knows what he is doing from the very beginning. He has a great knowledge of construction…
FAQ
Frequently Asked Questions about Kitchen Extensions Leatherhead
What should I budget for kitchen extensions in Leatherhead?
A Leatherhead budget for kitchen extensions should sit within £45,000 to £97,500 excluding VAT for a rear kitchen extension of about 30 square metres (London-derived) and add a contingency for what the KT22 survey cannot see. In post-war housing the unknowns sit behind plaster and under floors, so GS Renovation prices what is visible and names the rest. The Southern Building Control Partnership fee belongs in the same budget.
Does a kitchen extension in Leatherhead need planning permission?
Not always. A single-storey rear addition may go through the larger home extension route, which Mole Valley says covers up to eight metres on a detached house and six metres on other houses. The owner notifies the council, which has up to eight weeks to decide. The route is not available in a conservation area. Wraparounds and anything on a flat need a householder or full application prepared by your designer.
Which Mole Valley guidance applies to a Leatherhead kitchen extension design?
Mole Valley's Design Guidance for House Extensions SPD (2025) is the main document. It covers daylight and sunlight, overlooking and overbearing development, and single-storey and two-storey extensions. The 2025 Design Code SPDs add advice for householder applications, including a separate Leatherhead Design Code. Your designer works to both, and we build to the drawings that are approved.
Can a flat in Leatherhead have a kitchen extension?
Only with planning permission, because a flat has no householder permitted development rights. The VOA list shows 44% of Leatherhead homes are flats, so the question matters here. A ground floor flat will normally also need the freeholder's consent under the lease, and the garden may not even be part of the demise. Check the lease first, then instruct a designer to prepare the application.
What kitchen extension suits a Leatherhead terrace or semi?
An older terrace with a back addition usually suits a side return that fills the narrow passage beside it. A semi-detached or detached house has room for a rear or wraparound extension. The VOA list puts 15% of Leatherhead homes in terraces and 35% in semi-detached or detached houses, so both come up. The layout of the existing back rooms decides which one gives the better kitchen.
What hours can builders work on a kitchen extension in Leatherhead?
Noisy work runs 8am to 6pm Monday to Friday and 8am to 1pm on Saturday, with nothing on Sunday. Mole Valley allows quieter work from 7.30am to 8pm on weekdays and 8am to 8pm on Saturday. No work or deliveries may start before 7.30am. We plan the demolition, digging and steel days around those limits.
How do you get steel into the back of the house?
The structural engineer we appoint designs the beam and its bearings to carry the wall above the new opening. We prop the wall, cut the opening, set the padstones and lift the beam in, then call the Southern Building Control Partnership structural inspection before it is boxed in, where it is the building control body. Steel bearing into a party wall is notifiable, and the building owner serves that notice. On a narrow terrace the steel may come through the house, so we protect floors and plan the route first.
Do you fit the kitchen as part of the extension?
Yes. Running the kitchen in the same programme means the drainage runs, the electrics and the floor levels are set out for the actual units and appliances. Pipe positions for the sink and dishwasher go in at first fix, and the floor finish is laid to suit the plinths. That avoids cutting open new plaster later to move a pipe.
Where should roof lights and glazing go on a single storey extension?
Roof lights work best toward the old back wall, where the extension is deepest and furthest from the garden doors. Wide glazed doors light the garden end. Side glazing near a boundary can overlook a neighbour, which the Mole Valley extension guidance addresses. Glazing specification also has to meet the Building Regulations for heat loss, so we check it with the designer early.
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