Open-plan kitchen, diner and living conversions in Bishop's Stortford. Trusted, professional, 30+ years' hands-on experience.
An open plan conversion joins rooms by taking out the walls between them and carrying the load on beams. It is a structural job with a kitchen, services and finishing job attached to it. We appoint the structural engineer, build to the calculations and coordinate building control. In the Bishop's Stortford Conservation Area, part of the scheme may need planning permission before any of it starts.

The householder direction withdraws Schedule 2 Part 1 Class A, the enlargement, improvement or other alteration of a dwellinghouse, on elevations or areas facing or visible from a highway, open space or waterway. Class A is the class covering alteration of the house itself.
The council's leaflet states the limit in plain words. With the exception of the controls on chimneys and flues, the new controls apply only to elevations or areas that are visible from the public realm, meaning the highway, waterways or public open spaces. The internal knock through and any new opening on a visible elevation are therefore two different consent questions inside one job.
It decides it because access, temporary support and dust control all depend on the frontage. The conservation area appraisal picks out the larger three storey terraces on Portland Road and the tightly knit Sidney Terrace, complete with street lighting fixed to the buildings.
In a house of that type the temporary support goes in before anything comes out, and it stays until the beam is bearing. We plan the delivery point, the carry route and the prop positions at survey. You are told which rooms are out of use and for how long, in writing, before the work starts.
Schedule Two of the householder direction lists the affected properties by individual address rather than by whole street. The streets named in it include Windhill, Castle Street, Apton Road, Portland Road, Newtown Road, Grange Road, Hadham Road, Dunmow Road, Stansted Road and Warwick Road. Also named are Nursery Road, Trinity Street, Bells Hill, Church Street, South Street, Rye Street, Maze Green Road, Thornfield Road, Jervis Road, Bartholomew Road, Sidney Terrace, Crown Terrace, King Street, Market Square and Northgate End.
Being on one of those streets is not the same as being on the list, so the address gets checked rather than assumed. East Herts also operates a fee charging pre-application advice service for householders and developers, and prints 01279 655261 as the Bishop's Stortford planning contact number on its Article 4 leaflet. Where a scheme is finely balanced, that is the route to use before drawings are finalised.
An open plan conversion is several trades inside one programme, and the order is what protects the budget. We appoint the structural engineer, install the temporary support, take the wall out, set the beam, then run the electrics, heating and finishes into the new space. Building control applications and inspections are coordinated by us, so the opening is inspected while it is still open. You deal with one point of contact for the whole sequence rather than four trades with four diaries. GS Renovation Ltd is fully insured and registered in England, company number 14611254. Quotations are free and carry no obligation.
Built a new extension at rear of property. Laid foundations, drainage, raised floor, new roof and completed all fixtures and interior decoration…
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.
Giorgio is an excellent and intelligent workman, and with very reasonable prices! He installed a kitchen extractor fan in a complicated situation…
FAQ
Be careful, particularly if nobody has visited. Pricing open-plan conversion for a period, Georgian and listed Bishop's Stortford house without seeing it is how a low figure becomes a high one halfway through, and the extras land at CM23 when you have no leverage left. GS Renovation surveys, itemises and holds the total. A second opinion costs nothing and carries no obligation anywhere in Bishop's Stortford. Call 07472 424 226 and we will look at the CM23 quotation with you. 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.
It can. The test in the householder direction names elevations or areas facing or visible from a highway, open space or waterway, so a river frontage and a park frontage count alongside a street. One of the appraisal's five Identity Areas is the land either side of the River Stort, from Grange Paddocks to Station Road. A rear elevation is not automatically a private one here. We check what each elevation faces before the opening is priced.
That is a planning question before it is a building one. The householder direction withdraws Class A, the alteration of a dwellinghouse, on elevations facing or visible from a highway, open space or waterway, and a new front window is exactly that. East Herts guidance on the directions treats windows in modern materials or to a new pattern differently from painted timber to the existing or historic pattern. Design and material are settled before the opening is formed.
Yes, and the level change is designed rather than ignored. The appraisal records that Newtown developed after the railway arrived in the mid 19th century, with terraces and narrow streets on hilly ground. Floors in houses of that kind do not always line up. The options are a raised or lowered screed, a step kept as a feature, or structural work to the floor itself. Each has a different effect on ceiling height, doors and the beam.
It can, because escape from the first floor runs down through the ground floor once the walls go. The surveyor looks at the escape route, the alarm layout and whether a protected route survives the new arrangement. In East Herts that surveyor comes from Hertfordshire Building Control Limited, which delivers the service on the council's behalf. We raise the escape question with the engineer's drawings, so the answer is known before the wall comes down.
Not without checking, because the direction covering all properties withdraws eleven Part 14 classes here. They cover solar photovoltaic and solar thermal equipment, air source heat pumps, wind turbines, and flues forming part of biomass or combined heat and power systems. That direction applies to the whole conservation area and carries no visibility qualification, so the position of the unit does not rescue it. We raise the heating strategy with the structural scheme, not after the plaster is on.
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