Kitchen Extensions Cheshunt
Rear, side return and wraparound kitchen extensions in Cheshunt, 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
With 84% of Cheshunt homes built after 1945, the house a kitchen extension is added to here is far more likely to be post-war than Victorian. The 2021 census found terraces home to 35.2 per cent of Cheshunt households, with semis close behind on 30.7 per cent. That gives two recurring jobs across EN7 and EN8: a full-width rear kitchen on a terrace, and a rear or wraparound kitchen on a semi. We build the shell, the steel into the house, the drainage and the fitted kitchen as one programme.
For Cheshunt, 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; Hertfordshire work generally runs below that. GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Cheshunt: 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. Hertfordshire work generally runs below the London figures; your price follows a site visit. Prices checked September 2026. Full breakdown: Extension Cost and Planning Guide.
Quick estimate for Cheshunt
Cheshunt range: choose above

Rear and wraparound kitchens on Cheshunt terraces and semis
The house type decides the shape of the kitchen extension. On a Cheshunt terrace there is only the back wall to build from, so the new kitchen goes across the full width of the rear and the steel spans the old kitchen and dining room openings. On a semi you have a flank as well as a back, so a wraparound can carry the kitchen past the side wall onto ground that is otherwise a path to the bins. That choice changes the steel: a straight rear kitchen takes one beam across the old back wall, while a wraparound needs a corner post or a second beam where the two openings meet.
Rosedale shows why the era of the house matters for the opening. There, 48.2 per cent of the housing dates from 1965 to 1982, and a Rosedale house of that age can have a cavity back wall, a concrete lintel over the patio door and a solid ground floor. We open up a small section before the structural engineer we appoint finalises the beam and its bearings, so the design follows what is really there. We also locate the soil stack and gully early, because a stack on the wall the kitchen will cover has to be rerouted or boxed inside the new room.
Housing in Cheshunt
The valuation list shows roughly 18,660 homes in Cheshunt, of which 6% are pre-1919, 9% interwar and 84% post-1945, split 25% flats to 75% houses. Terraced houses make up 41% of homes here, and a terrace kitchen extension in Cheshunt starts in a narrow side return.
Permitted development, Churchgate and Green Belt land in Cheshunt
Whether a Cheshunt kitchen extension needs a planning application turns first on where the house stands. Broxbourne has no Article 4 direction recorded on the national planning data register, so outside a conservation area and away from listed building curtilages the householder permitted development limits apply in full. A rear kitchen inside those limits still needs building regulations approval, and the larger single-storey rear extension route is a separate prior approval notification. A flat has no householder permitted development rights at all, so a ground floor flat wanting a kitchen extension needs a full application and the freeholder's consent.
Churchgate is the exception inside the town. It is the one conservation area out of Broxbourne's six that falls within the Cheshunt built-up area, designated in 1968 with its boundary updated in 1980. A house inside it loses the permitted route for side extensions and faces closer control of external materials, and any tree near the new footprint needs an application to the council before roots are cut. Green Belt covers Cheshunt Park and Theobalds Park. It does not remove permitted development rights, but where an extension there needs an application, Green Belt policy restricts its scale, so the size question is settled first.
Clay, gravel and flood zone under a Cheshunt kitchen footprint
The ground sets the foundation depth before anything else in the kitchen is fixed. BGS maps London Clay as the bedrock under every tested part of Cheshunt, and it rates that clay as very susceptible to volume change. A kitchen extension stands on its own new foundation against a house that has settled for decades, and the two can move differently as the clay wets and dries. The building control inspector looks at the trench bottom before concrete is poured, and where trees or drains are close the depth can increase on the day, which is why we allow for it in the programme.
On the east side of the town the question changes. BGS maps Alluvium on the Lea valley floor from around Cheshunt railway station eastwards, and the Environment Agency places the valley floor by the Lee Navigation and the marsh land in Flood Zone 3. A kitchen extension in that zone needs a flood risk assessment with any planning application, and the finished floor level is set with the flood risk in mind. In the west, the Dollis Hill Gravel ranges from 1 to 15 metres thick, so the trench depth to a firm layer can differ between neighbouring streets.
Drainage, glazing and the fitted kitchen in one Cheshunt programme
Drainage under the footprint is settled before the slab goes down. A sink, dishwasher and washing machine on the far wall of a Cheshunt kitchen extension need a steady fall back to the existing run. An inspection chamber that ends up under the new floor has to be moved or fitted with a sealed cover. If a public sewer crosses the garden, building over it needs the water company's agreement before the trench is dug. Hertfordshire Building Control, the company Broxbourne owns jointly with seven other Hertfordshire authorities, inspects the drains before they are covered.
Glazing and roof lights come next, and they drive the thermal calculation. A rear kitchen with a wall of sliding doors and a flat roof lantern can exceed the standard glazing allowance, and then a calculation has to show the whole extension still meets Part L. Extraction is planned at the same time, since a hood on an island needs a duct route through the new roof. We sequence the kitchen fit-out behind plaster and screed drying, so worktops are templated once the walls are final and the units are not fitted into a damp room.
- Wet underfloor heating laid in the new screed
- Hob gas supply altered by a Gas Safe registered engineer
- Sliding, bifold and steel-framed glazed doors to the garden
VOA Council Tax stock of properties, March 2025, for all 6 statistical areas in Cheshunt. Counts rounded by the VOA.
Why Cheshunt Homeowners Choose GS Renovation
You deal with one named contact from the first survey to the last worktop, and the kitchen is fitted by the same firm that built the room around it. We appoint the structural engineer for the steel into the house, build to the issued design and coordinate the building control inspections on the trench, drains and steel. The work is carried out by our own trades rather than a chain of subcontractors, and the founder, Abdelaaziz Saaid, has spent more than thirty years on site. You receive a written quotation after a survey of the house and garden.
- Rooflights set out against the engineer's steel layout
- Building control applications and inspections coordinated for you
- New floor level matched to the existing house, with no step at the opening
Reviewed jobs near Cheshunt
3 MyBuilder reviews from Waltham Cross, with each customer's own job title:
- Kitchen Restoration, Waltham Cross, 7 Jan 2023 (5 out of 5)
- Kitchen refurbishment, Waltham Cross, 3 Sep 2021 (5 out of 5)
- Medium sized bathroom refurb, Waltham Cross, 9 Oct 2017 (5 out of 5)
Read all 31 on our reviews page.
What can I say!!! George is an extremely lovely man his workmanship is second to none, he has an excellent eye for detail and nothing was to much…
Really happy with the quality of remedial works carried out by George in putting other previous tradesman work right. He was very helpful, honest and…
George did a great job on our new bathroom. He is a really friendly and helpful guy and always ready to discuss any issues or concerns and come up…
FAQ
Frequently Asked Questions about Kitchen Extensions Cheshunt
What does the kitchen extensions quotation for a Cheshunt home cover?
A Cheshunt quotation for kitchen extensions sets out scope, programme and price on one document, within £45,000 to £97,500 excluding VAT for a rear kitchen extension of about 30 square metres (London-derived). It shows what is done, in what order and at what cost, and the order is not arbitrary: the shell is made watertight before the old rear wall is opened and the existing kitchen comes out. Exclusions are stated plainly rather than left to be discovered once work starts at the EN8 property.
Does a single-storey kitchen extension in Cheshunt need planning permission?
Not always. Broxbourne has no Article 4 direction on the national register, so a Cheshunt house outside a conservation area keeps its householder permitted development rights for a single-storey rear extension within the size limits. Building regulations approval is needed either way. A listed house, or one in the Churchgate conservation area, needs the position checked first. Green Belt land does not remove these rights, but it limits what an application can win. A flat always needs an application.
Can a ground floor flat in Cheshunt add a kitchen extension?
It can, but only with a full planning application and the freeholder's written consent, because a flat has no householder permitted development rights. Purpose built blocks housed 20.6 per cent of Cheshunt households in 2021, and in a block the garden, walls and foundations normally belong to the freeholder. The lease decides whether you can build on that land at all, so it is read before any drawings are commissioned.
How deep will the foundations be for a kitchen extension in Cheshunt?
Deeper than on sand or chalk, because the ground under Cheshunt is London Clay, which BGS describes as very susceptible to volume change. The building control inspector confirms the depth at the open trench, and it increases where trees are close, since roots draw water out of clay. In the west of the town, gravel of varying thickness over the clay can change the answer between neighbouring houses.
Who inspects a kitchen extension built in Cheshunt?
Hertfordshire Building Control, unless a registered building control approver is appointed instead. It is a company jointly owned by Broxbourne and seven other Hertfordshire authorities, and it takes applications by phone, by email or through the Planning Portal. It inspects foundations, drainage, steel and insulation at set stages and issues the completion certificate that conveyancing will later rely on. We coordinate those visits with the build programme.
Is there a quick way to ask Broxbourne about a Cheshunt kitchen extension?
Yes. Householders can book the Broxbourne duty planner, a ten minute phone slot held on Wednesdays from 9am to 1pm, and slots open up to two weeks in advance. It suits a short question, such as whether a house is on Green Belt land. It is not a formal decision, so a lawful development certificate is the document to obtain if a buyer will later need proof.
Will a Cheshunt kitchen extension on the east side need a flood risk assessment?
It can. The Environment Agency puts the low ground by the Lee Navigation and the Cheshunt marsh land in Flood Zone 3, and a planning application on that land has to include a flood risk assessment. The assessment may set the finished floor level and call for flood resilient materials at low level. Houses on the higher ground to the west in EN7 are generally outside that zone, but the flood map is checked for the exact address early.
How long does a kitchen extension take once work starts on site?
Plan it as two linked stages, the build and then the kitchen. The shell, roof and glazing come first, then first fix services, plastering and screed, which needs drying time before a floor finish goes down. The fitted kitchen follows once the walls are final. Lead times on large sliding doors and on the kitchen units often set the finish date more than the building work does, so both are ordered early.
Does a kitchen extension on a Cheshunt semi or terrace involve the Party Wall Act?
It does wherever the work touches the shared wall or digs near next door. The 2021 census put 65.8 per cent of Cheshunt households in terraces and semis, homes that share a party wall with next door. Building on or up to the boundary line, cutting into the party wall for steel, or digging close to a neighbour's building and deeper than its foundations brings in notice under the Act. You, as building owner, serve the notice or appoint a surveyor to do so, and we give you the drawings it needs.
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