Open-plan kitchen, diner and living conversions in Welwyn Garden City. Trusted, professional, 30+ years' hands-on experience.
An open plan conversion is a wall removal plus everything that follows it: the beam, the floor, the ceiling line, the services that were buried in the wall and the making good. In Welwyn Garden City there is also a consent check that sits outside the planning system entirely. We appoint a structural engineer, build to the calculations issued, and coordinate the building control side.

Post-war housing in the town gives you more to work with than the earliest terraces do. Houses along The Reddings are brick built and date from the 1950s through the 1970s. The conservation area appraisal records Sherrards Park Road as typically detached two storey red brick housing dating from the 1950s onwards. The Peartree conservation area combines a mixture of hipped and gabled terraces, and the roof form over an opening changes how load comes down to it.
Largely at the rear of properties, according to the Peartree appraisal. That appraisal records that little modern development has taken place in the area, and that where it has taken place it has largely occurred to the rear of properties. It records some, but not many, side extensions to end terraces. It also records that there are no designated heritage assets within the Peartree Conservation Area, which is not the same as saying the area carries no constraints.
The scheme does not cover every property in the town, so the address has to be checked rather than assumed. The scheme's own history page records that it covers most properties in the Sherrards and Handside wards, together with parts of the Haldens, Peartree, Hollybush and Howlands wards. Welwyn Hatfield Borough Council publishes a public web map, linked from its Estate Management Scheme page under the heading Find Estate Management Areas on a map, on which you can check whether a property falls within the scheme. A knock through kept entirely inside the house is a different question from one that puts new glazing in a rear elevation.
Open plan work is a coordination job before it is a building job. The engineer, the steel, the propping, the electrics that were buried in the wall coming out, and the floor and ceiling finishes all have to land in the right order. We run that sequence with one point of contact, so you are not managing trades against each other. We appoint the structural engineer and build to the calculations issued. GS Renovation Ltd is rated 4.9 from 31 reviews on MyBuilder and is fully insured.
The kitchen has been fitted to the high standard. Saaid was polite, professional, tidy, he pays attention to a little details that make huge…
Saiid did a complete refurbishment of our small bathroom. This involved ripping out the existing bath/shower, basin, toilet, pipework, and tiles and…
Very friendly and I am very pleased with the work he has done, also very clean worker and enthusiastic about his work. Can not fault this company!!!!…
FAQ
No. Open-plan conversion is priced from scope, so a Welwyn Garden City home is not quoted higher than the same house over in Hatfield. Where costs do rise is in period stock and awkward access, both of which are checked at the AL7 property. GS Renovation shows those as separate lines so you can see the reason. The AL7 survey costs nothing and there is no obligation afterwards, in Welwyn Garden City or anywhere in Welwyn Garden City. As a rough guide, open-plan conversion in London typically costs from roughly £3,000 to £8,000 or more, including the steel beam and finishing (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
Hertfordshire Building Control, which provides the building control service for the borough after the council's building control web address redirects there. Its inspections cover foundations, damp proofing and structural issues, along with insulation, ventilation, heating, sanitation, accessibility, fire protection and means of escape. Taking a wall out can change escape routes and the way rooms are ventilated, so the inspection reaches wider than the steel. We make the application and book the visits.
Whatever the engineer designs to replace the restraint those walls were giving, which means assessing the whole floor rather than each opening on its own. Wall construction feeds into that. The 1923 scheme of 93 houses in Guessens Road was swiftly erected without cavity walls, and Nos 102 and 104 Handside Lane are built in 2 inch bricks. Solid walls of small bricks are not assumed to behave like modern cavity construction.
It can, depending on the depth of the existing floor structure and on what the beam has to carry. Load paths in this stock are not always readable from the room. Brockett Close consists of two storey red brick terrace housing with passage ways running through the depth of the buildings, so structure can sit where a finished room gives no hint of it. The engineer settles flush or downstand once the survey is done.
Yes, cutting into a party wall to form a bearing engages the party wall procedure, and notice goes to the adjoining owner before work starts. The wall itself varies in age and build across the town. Building in the Peartree area began in the early 1930s, and the Beehive area was constructed almost thirty years after Peartree. The notice runs in parallel with the building control application rather than after it.
It adds routes rather than merging them. The extension side may need planning permission from Welwyn Hatfield Borough Council, and Estate Management Scheme consent is required for extensions within the covered area, charged separately from any planning application fee. Hertfordshire Building Control covers the structural work on both parts. Run the consents in parallel, because the scheme and the planning route each judge the design and each can ask for changes.
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Same Service, Nearby Areas
We carry out open-plan conversion across Welwyn Garden City and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for open-plan conversion in Welwyn Garden City. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.