Open-plan kitchen, diner and living conversions in Merton. Trusted, professional, 30+ years' hands-on experience.
GS Renovation creates open-plan living across Merton, opening up the compartmented layouts of Wimbledon, Mitcham and Morden's terraces into bright kitchen-diners and flowing reception spaces. Drawing on 30+ years in SW19, SW20, CR4 and SM4, we combine engineer-sized steel beams with careful finishing, whether you want a full knock-through, a broken-plan scheme or a Crittall divider.

The classic Merton terrace was built as a series of small rooms, and the walls between the front reception, the middle room and the rear closet-wing kitchen are usually load-bearing. To join them into one open space we have an engineer size a steel beam for each opening, set it on padstones, prop the floors above and remove the walls in controlled stages so the ceiling never drops.
Not every home wants a single vast room. In many SW19 and SW20 houses we create broken-plan layouts instead, keeping a structural pier or a low return so the kitchen and dining zones read as one but retain some definition. Where clients want light without full openness, a Crittall-style glazed divider set into an engineered opening gives a bright, defined kitchen-diner with the industrial look these period homes carry well.
Opening up the ground floor is structural work, so it is governed by the Building Regulations and Merton Council's building control inspects the beams and signs off the completion, rather than any planning application. Internal open-plan work does not need planning permission unless you are in a conservation area and altering the exterior. We manage the inspections and hand over the certificate and the engineer's calculations.
Because these beams often bear into the party wall shared with the neighbour, the Party Wall Act applies and you serve notice before work starts, which is standard on Merton's continuous terraced rows. We then finish the space properly: beams boxed in or flush, floors levelled across the old wall lines, and plaster, skirting and services made good so your new kitchen-diner feels like it was always one room.
Merton homeowners choose GS Renovation for open-plan work because one team takes it from engineer's design to finished room: beam sizing, safe staged demolition, building control sign-off and a clean plastered finish. We protect your home while we work, keep the dust and disruption down, and bring 30+ years of turning SW19, SW20, CR4 and SM4 terraces into open-plan living.
Really great job done in our bathroom to replace the shower head in the bathtub, and install a shower screen and caddy. We are very happy with the…
George was very friendly and helpful from start to finish. He worked really hard to ensure our kitchen was installed to a high standard and was…
We loved working with George and Ibrahim and would highly recommend them. They have done splendid job on our new kitchen refurb which including new…
FAQ
Only a survey answers that honestly. Two Merton houses of the same size can differ once open-plan conversion is scoped, so we look at the SW19 property first, then price the structure, the trades and the Merton Council approvals as separate lines you can compare. That written quotation is what GS Renovation stands behind across Merton and Wandsworth. Nothing is owed for the SW19 survey if you decide against going ahead with open-plan conversion in Merton. 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.
The written programme is part of the quotation for every Merton home. It covers the open-plan conversion stages, the trades in sequence, and the points at which Merton Council must inspect before work is concealed at SW19. GS Renovation books those inspections ahead so the job is not waiting on paperwork. Ask on 07472 424 226 about current start availability across Merton. Nothing is concealed at an SW19 address before Merton Council has been to see it.
Because it is inspected and certified, not simply declared finished. Merton Council inspects the structural stages of open-plan conversion at your SW19 property before anything is concealed, and the completion certificate is handed to you at the end. GS Renovation also appoints the structural engineer where the design requires one. That paperwork is what a buyer's solicitor asks for when a Merton home is sold anywhere in Merton. The Merton certificate arrives with the SW19 handover pack.
Building regulations, principally structure. The beam is sized by an engineer and inspected by Merton Council before it is concealed. Fire separation also matters where the Merton conversion opens a stairwell, because escape routes must stay protected under Part B.
Yes, and it is the sort of property we are on most weeks. Open-plan conversion at an SW19 address of that age needs the structure confirmed before design, so GS Renovation appoints an engineer where the work requires one and builds to their specification. Merton Council inspects at the defined stages. The Merton survey costs nothing and carries no obligation. Ring 07472 424 226 and we will describe recent open-plan conversion projects on similar SW19 houses in Merton.
Almost always, yes. The dividing wall is usually load-bearing, so a structural engineer sizes a steel beam that spans the opening on padstones, and we remove the wall in staged, propped sections. Merton Council's building control certifies the work under the Building Regulations, and because the beam often bears into the shared party wall, you serve the neighbour a Party Wall Act notice first.
Almost always, and it is a fair question to ask any contractor. Open-plan conversion across Merton is core work for GS Renovation rather than an occasional job, so there is usually an SW19 project or a Merton one under way. Ask to speak to those clients. Call 07472 424 226 and we will arrange it. Seeing finished work in Wandsworth is worth the trip. Nothing about an SW19 address is withheld if you ask.
Every Service, One Team
The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Merton. Explore what else we do locally:
Same Service, Nearby Areas
We carry out open-plan conversion across Merton and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for open-plan conversion in Merton. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.