Kitchen Extensions Dunstable

Rear, side return and wraparound kitchen extensions in Dunstable, the room, the services and the kitchen built as one job.

A kitchen extension in Dunstable is shaped by the house it joins. Valuation records put 44% of homes here as semi-detached or detached and 23% as terraced. So the jobs to plan for are a full-width rear kitchen on a semi, a wraparound into the side passage, or an infill beside a terrace's back addition. The 28% of homes that are flats are a different case, because a flat has no householder permitted development rights. We build the shell, the steel, the drainage and the kitchen itself as one programme.

For Dunstable, 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; Bedfordshire work generally runs below that. GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Dunstable: 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

WorkIndicative 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. Bedfordshire 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 Dunstable

Dunstable range: choose above

A navy shaker kitchen fitted by GS Renovation, with a peninsula hob under a ceiling-hung extractor, a roof lantern overhead and glazed doors to the garden
The hob sits in the peninsula under the ceiling extractor, with the lantern lighting the worktops and the doors behind.

The Dunstable semi takes a rear or wraparound kitchen

On a Dunstable semi the kitchen extension runs across the back of the house, or wraps round into the side passage where the plot allows. The 2021 Census found semis home to 40 per cent of households in the town, where the national share is 32 per cent. Dunstable East goes further: 1,890 of its 2,688 households, just over 70 per cent, were in a semi. So the rear kitchen on a semi is the case to plan for first here.

A semi of this kind has one party wall and one open flank. The rear wall comes out to open the old kitchen into the new room, so a steel goes in above the opening, sized by the structural engineer we appoint. If the steel bears into the party wall, or the new footing is dug close to and deeper than the neighbour's foundation, the Party Wall Act applies, and you as building owner serve the notice before that work starts. A wraparound adds a second opening and a corner post, so the steel design and the order of propping change with it.

Housing in Dunstable

On the valuation list Dunstable counts about 17,660 homes, 28% flats and 72% houses; 9% predate 1919, 12% are interwar and 79% post-war. A semi in Dunstable can take its kitchen extension across the back and round into the side passage, which leaves room for a utility behind the kitchen, and 33% of homes here are semi-detached.

How the Central Bedfordshire Design Guide bears on a Dunstable kitchen extension

Where your Dunstable extension needs planning permission, the Design Guide is part of the test. The document was adopted by Central Bedfordshire on 1 August 2023 as a Supplementary Planning Document, and every new development in the district falls under it, a rear kitchen included. It carries weight as a material consideration when an application is decided. Whoever applies has to demonstrate how the scheme responds to it, rather than simply attach it.

In practice that is a job for whoever draws your scheme. The drawings, and any statement that goes with them, should explain the roof form, the materials and how the extension sits against the neighbour, in the Design Guide's own terms. We price and programme from those drawings, and we build to the consent as issued. If the approved plans set a brick, a roof pitch or a glazing pattern, that is what goes on site, and any change comes back to your designer before it is built.

Drains, soakaways and floor levels at the back of a Dunstable house

The drainage under the back garden decides more of the extension than the kitchen layout does. Central Bedfordshire rules out the building notice route where the work sits over or close to a public sewer. So where the council is the building control body, a rear kitchen that lands on a shared run goes through a full plans application, with plans, specifications and calculations. The sewerage company's consent to build over or near the sewer is needed too. On a pair of semis that run can pass close to the back wall, so we trace it with a camera early.

Rainwater from the new roof also needs somewhere to go. The centre of Dunstable falls within the Periwinkle Lane safeguard zone for drinking water, a groundwater Source Protection Zone 2 in Environment Agency terms. The Watling Street crossroads itself sits inside the mapped surface water flood extent for a 1 per cent annual chance event, though it is outside the river flood zones. Your designer settles the soakaway or connection and the finished floor level, and we set thresholds and falls to suit before the slab goes down.

Terraces in central Dunstable and flats across the town

An older terrace in central Dunstable tends to take a side infill rather than a full-width addition. That is where the old stock sits: council tax data gives the centre roughly 560 pre-1900 homes, plus about 620 from 1900 to 1918. Inside conservation area CA43 a side extension is not permitted development, so it needs planning permission. Houses of that age often have a narrow back addition with a yard beside it, and the extension fills that strip under a glazed or pitched roof.

Solid walls, shallow footings and old clay drains are what we expect to open up on those jobs, so the programme carries time for them. Flats are a separate question. Purpose built flats held 22 per cent of households in the town in 2021, by the Census count, and a flat has no householder permitted development rights. Any ground floor extension to a flat needs planning permission and, where the flat is leasehold, the freeholder's consent before we can put a date on it.

  • Flat roofs with rooflights or a roof lantern over the kitchen
  • Utility rooms and larders at the back of the extension
  • Building control inspections from footings to completion
Service areaDunstable · LU6 and LU5
Local authorityCentral Bedfordshire Council
Part ofBedfordshire · about 19 miles from our base
Typical homesPost-war estate housing around a medieval crossroads core
Housing stock9% built before 1919, 12% interwar, 79% post-war; 28% flats, 23% terraced, 44% semi-detached or detached, 5% bungalows
Also covered nearbyLuton, Harpenden, Tring, Berkhamsted and Hemel Hempstead

VOA Council Tax stock of properties, March 2025, for all 5 statistical areas in Dunstable. Counts rounded by the VOA.

Why Choose GS Renovation in Dunstable

A kitchen extension is two jobs, the building work and the kitchen, and we run both. The structural engineer we appoint sizes the steel, we programme the inspections, and the kitchen fitters arrive to a room that has been plastered, screeded and dried out. You get a written quotation after a site visit, one programme from ground works to worktops, and one contact who knows where each trade is on any given day.

  • Structural engineer instructed and coordinated on your behalf
  • Rooflights set out against the engineer's steel layout
  • Building control and Part P certificates handed over together at the end
30+ YearsFounder's experience
Fully Insured5 year guarantee
4.9 / 531 MyBuilder reviews
Building ControlCompliant
Free QuotesNo obligation
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FAQ

Frequently Asked Questions about Kitchen Extensions Dunstable

Does the cost of kitchen extensions rise in a post-war suburban Dunstable property?

In a post-war suburban Dunstable home the unknowns behind plaster are what move a kitchen extensions figure within £45,000 to £97,500 excluding VAT for a rear kitchen extension of about 30 square metres (London-derived), which is why the LU6 survey matters more there. GS Renovation prices the visible work, names the risks, and agrees anything additional in writing. The approvals do not change with age: building regulations approval covering the foundations, the steel into the house, the drainage and the cooker extract under Part F applies either way.

Does a kitchen extension in Dunstable need planning permission?

Often not, if it is a single storey rear extension on a house within the permitted development limits, and no Article 4 direction covers any part of Dunstable. Inside conservation area CA43 a side or wraparound extension needs permission. Flats have no householder permitted development rights, and some newer estate consents remove them by condition. Your designer confirms the route, and a lawful development certificate settles any doubt before we start.

Who decides a planning application for a Dunstable kitchen extension?

Central Bedfordshire Council decides it, as a unitary authority. The Town Council has no planning powers here, although it may comment. The council allows 8 weeks to decide a minor application, which covers a householder extension, and statutory consultation lasts 21 to 28 days. We hold a start date for you once the decision notice is in hand. A listed building is the exception: work that affects its character, inside or out, including an extension or taking out a wall or chimney breast, needs listed building consent from Central Bedfordshire Council, and doing it without consent is a criminal offence.

Is a Dunstable house inside the town's conservation area?

Only if the address falls inside CA43, the town's one conservation area, which takes in the historic crossroads and covers roughly 28 hectares. Your designer can check the boundary against your address on the published map. Inside it, a side or two storey rear extension is not permitted development, and materials and roof form get closer attention in any application.

Can the kitchen be fitted in the same programme as the extension?

Yes, and that is how we plan it. The kitchen layout is fixed before the drainage and electrics go in, so waste runs, sockets and extraction land where the units need them. Plastering and screed are given time to dry before the cabinets arrive, which protects the worktops and the flooring you choose.

What glazing and roof lights suit a rear kitchen extension?

Glazing is set by the approved drawings and by the building regulations for heat loss (Part L) and safety glazing (Part K). Bifold or sliding doors across the back and roof lights over the worktop run are the common pattern. The bigger the glazed area, the more the structure and the insulation elsewhere in the room have to do, so we settle it with your designer early.

What has to be shown to meet the Central Bedfordshire Design Guide?

The Design Guide is a material consideration, and applicants must show how they have taken it into account. For a householder extension that means drawings, and where useful a short design statement, that explain the scale, roof and materials against the host house. Your designer prepares it, and we build to the plans the council approves.

Does Dunstable have a neighbourhood plan that an extension must follow?

Dunstable has no made neighbourhood plan. Next door, Houghton Regis has had one since May 2024 and Totternhoe since June 2021, so a house just over either boundary has an extra layer of policy to meet. Inside the town, the adopted plan is the Local Plan for 2015 to 2035.

How do you protect a Dunstable house while the back wall is opened?

The existing kitchen is stripped and sealed off from the rest of the house with dust screens before any wall comes down. Temporary props carry the load while the steel goes in, and the opening is closed with a weathertight screen until the new roof is on. You keep a working sink elsewhere where the layout allows.

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