Kitchen Extensions Ware

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

A kitchen extension in Ware is usually a single storey addition on the back or side of a house, built so the new room and the new kitchen arrive together. The VOA list puts terraced houses at 24% of homes in Ware and semi-detached or detached houses at 39%, so the side return, the rear box and the wraparound all come up. Flats are a separate case, because a flat has no householder permitted development rights. We build to the consent you hold, with steel sized by the structural engineer we appoint and a kitchen fitted in the same programme.

For Ware, 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 Ware: 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. 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 Ware

Ware range: choose above

Rear extension shell by GS Renovation across the back of a brick house, with the steel held on lifts and the new roof edge in place
The new walls and roof run the full width, with the old rear wall opened up beneath the steel.

Keeping a Ware extension subservient to the house

The shape of a kitchen extension in Ware starts with East Herts District Plan Policy HOU11, which says extensions should generally appear as a subservient addition to the dwelling. In practice that means the new roof sits below the existing eaves line, the new wall steps in from the corner where it can, and the extension reads as the smaller, later part of the house. On a semi that often settles whether a wraparound joins the side and rear in one roof or in two lower ones.

Subservience also shapes the cost drivers. A lower roof can mean a shallower fall and a different roof light, and a set back wall can change where the steel lands. We price from the drawings your designer produces, so the choice between a pitched roof and a flat roof with a lantern is made before the quote, not on site. Settling the roof form on paper first also means the steel, the roof light and the kitchen layout are ordered once.

Housing in Ware

Around 8,980 homes make up Ware on the valuation list; 34% are flats and 66% houses, and 12% date from before 1919, 8% from between the wars and 79% from after 1945. A semi in Ware can take its kitchen extension across the back and round into the side passage, which leaves room for a utility behind the kitchen, and 27% of homes here are semi-detached.

Why single storey flat roofs work under HOU11 in Ware

Policy HOU11 refuses flat-roofed extensions above ground floor except in exceptional circumstances, so a single storey flat-roofed kitchen extension in Ware is not caught by that refusal. That matters for kitchens, because a flat roof is what lets you put a long roof light or a lantern over the worktop run and keep the back bedroom windows clear above it. It also keeps the upstairs rooms free of a new wall of brickwork outside their windows.

The same policy expects first-floor side extensions to leave space to the neighbouring boundary, with 1 metre as the general minimum, to avoid a terracing effect. If you are thinking of adding a bedroom over the kitchen later, that gap shapes the ground floor plan now. Tell us at the first visit, so the structural engineer we appoint can size the foundations and the steel for the storey you may add rather than the one you are building.

Light, outlook and the house next door in Ware

East Herts says it assesses householder extensions for loss of light, privacy and outlook and for overbearing impact on the host and neighbouring dwellings. On a terrace, a side return built up to the boundary sits close to the neighbour's rear rooms, so the height of the new side wall and the pitch of any glazed roof are what the assessment turns on. A wall on or astride the boundary also brings in the Party Wall Act, and you as building owner serve the notice.

Before your designer finalises the drawings, East Herts runs a pre-application service for planning advice alongside its online application route. Check early whether the house is inside the Ware Conservation Area, one of the 42 in East Herts. In a conservation area a side extension is not permitted development, so a side return or wraparound there needs planning permission. On site we set out the wall exactly to the approved line and height, because extra courses on a boundary wall are the kind of change a neighbour notices.

What the ground under Ware means for footings and drains

The ground a Ware kitchen extension sits on varies from street to street, and it affects the footing. The British Geological Survey maps chalk at surface with no superficial deposit at Park Road, Scotts Road and Widbury Hill. Its sample points at Musley Hill and Fanhams Road return the Lowestoft Formation, the chalky boulder clay of the area. Clay near trees can move with the seasons, so the trench depth and any heave precaution are set by the designer or engineer and agreed with building control before we dig.

Drainage is the other half of the groundwork. A kitchen extension usually covers an existing run or a gully, and the new sink and dishwasher need a fall to a connection that can take them. We expose the existing drain early, confirm its route and depth, and agree any diversion or new manhole with building control. If the run is a public sewer, building over or near it also needs the water company's agreement, so the slab is poured once over drains that are already proven. Rainwater from the new roof is planned at the same time, not added at the end.

  • New kitchen circuits, with Part P certification from a registered electrician
  • Party wall process explained, with drawings for your notices
  • Floor levels matched through the old opening
Service areaWare · SG12
Local authorityEast Herts District Council
Part ofHertfordshire · about 10 miles from our base
Typical homesPost-war and modern estates around a dense historic core of listed buildings and former malthouses
Housing stock12% built before 1919, 8% interwar, 79% post-war; 34% flats, 24% terraced, 39% semi-detached or detached, 3% bungalows
Also covered nearbyHertford, Harlow, Welwyn Garden City, Cheshunt and Hatfield

VOA Council Tax stock of properties, March 2025, for Ware East and Ware West. Counts rounded by the VOA.

Why Choose GS Renovation in Ware

We run the extension and the kitchen as one job, so the structure, the drainage, the electrics and the units follow one programme with one point of contact. The structural engineer we appoint sizes the steel, a registered electrician certifies the new circuits, and building control inspects the footings, the drains and the finished shell. You get a written quotation after a site visit, and a written programme you can share with your designer and your neighbours.

  • Drains surveyed by camera before the footprint is fixed
  • Honest updates if a date or a detail has to move
  • Rooflights set out against the engineer's steel layout
30+ YearsFounder's experience
Fully Insured5 year guarantee
4.9 / 531 MyBuilder reviews
Building ControlCompliant
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★★★★★ 4.9 average from 31 verified reviews on MyBuilder

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Punctual, worked hard, and did exactly what he was asked and what he said he would do. Overall, a very high quality job. Will use again.
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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…
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He was very very good. He just got on with the job and we was beey pleased with the result. He Also cleaned everything away when he finished. Will…
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FAQ

Frequently Asked Questions about Kitchen Extensions Ware

What should I budget for kitchen extensions in Ware?

A Ware 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 SG12 survey cannot see. In post-war suburban housing the unknowns sit behind plaster and under floors, so GS Renovation prices what is visible and names the rest. The Hertfordshire Building Control fee belongs in the same budget.

Can a flat roof kitchen extension be built in Ware?

Yes, at single storey. East Herts District Plan Policy HOU11 refuses flat-roofed extensions above ground floor except in exceptional circumstances, so a ground floor flat roof is not caught by that refusal. A flat roof is also the easiest way to fit a long roof light or a lantern over the kitchen. Whether you need planning permission as well depends on the size, the position and whether the house is in the Ware Conservation Area, which your designer confirms.

What does East Herts look at when assessing a kitchen extension in Ware?

Loss of light, privacy and outlook, and overbearing impact on your house and the neighbouring dwellings. East Herts states it assesses householder extensions on those grounds. For a kitchen extension that usually comes down to the height of the boundary wall, the depth of the extension and where the glazing faces. Your designer can test those points early through the council's pre-application advice service.

Could a bedroom go above a new kitchen extension in Ware later?

Possibly, but plan for it now. Policy HOU11 expects first-floor side extensions to leave space to the neighbouring boundary, with 1 metre as the general minimum. If the ground floor goes right to the boundary, a future bedroom above may have to step in. Tell us early so the structural engineer we appoint can design the foundations and steel for the extra load, rather than have them replaced later.

What kind of kitchen extension suits a terraced house in Ware?

A side return or a rear single storey extension, or both joined as a wraparound where the plot allows. Terraced houses make up 24% of homes in Ware on the VOA list. On an older terrace with a back addition, the side return fills the narrow strip beside it, usually with glazing overhead because the side wall has no windows. A post-war terrace without a back addition takes a rear extension across the width instead.

Can a flat in Ware have a kitchen extension?

Not under permitted development. A flat has no householder permitted development rights, so any extension needs planning permission, and a leasehold flat also needs the freeholder's consent under the lease. Flats make up 34% of homes in Ware on the VOA list. We build once you and your designer hold the planning consent and, for a leasehold flat, the landlord's written licence.

Does the ground in Ware change how deep the footings go?

It can. The British Geological Survey records chalk at surface at Park Road, Scotts Road and Widbury Hill, and chalky boulder clay at Musley Hill and Fanhams Road. Clay near trees can need deeper footings and heave protection. Building control inspects the trench before concrete goes in and can ask for more depth if the ground on the day calls for it.

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

Yes, and it saves time. We place the waste, water, gas and electrical first fix while the walls are open and the floor is not yet screeded. The units are measured from the finished plaster, not the drawing, so they go in square. A registered electrician certifies the circuits, and gas work is done by a registered gas engineer.

How long does a kitchen extension take to build?

A single storey rear or side extension with its kitchen usually runs over several weeks on site, depending on size, steel, glazing lead times and the building control inspections. We give you a written programme with the quote, showing when the kitchen is out of action and when a temporary sink or cooker point is set up.

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