Open-Plan Conversions Richmond

GS Renovation creates open-plan spaces in Richmond upon Thames, opening up the compartmented layouts of Georgian, Regency and Victorian homes across TW1, TW9 and SW13. We handle knock-throughs, kitchen-diners, broken-plan schemes and Crittall dividers, installing steel designed by the engineer we appoint so period homes flow without losing their character.

In Richmond upon Thames, a knock-through finished as one room typically costs £3,000 to £8,000 or more, including the steel beam (indicative London ranges, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Richmond upon Thames: the structural engineer we appoint designs the steel, we install it, and building control signs it off.

How the job runs

1. Free site survey at your Richmond upon Thames address, covering the walls, services and floor levels, and an itemised quote.
2. The engineer we appoint sizes the beam, and the work is registered with Richmond Council building control or an approved inspector. On a shared wall you serve the party wall notice as building owner; we supply the drawings.
3. Props in, opening cut, beam on padstones; then floors, heating and electrics are joined up.
4. Building control inspects the steel before it is covered. We finish the room, and the completion certificate follows.

Open-plan living in Richmond period homes

Richmond's period houses were built as a series of small, separate rooms, so opening them up nearly always means taking out load-bearing masonry. A double knock-through to make one reception room, or joining the kitchen to a rear diner in a Teddington terrace, needs a structural engineer to design the beam that will carry the floors and walls above once the dividing wall has gone.

We favour a broken-plan approach in these homes, keeping a sense of the original proportions rather than gutting everything to one box. A steel beam on padstones can be boxed in flush or left exposed, and Crittall-style glazed dividers let light travel through while still marking the old room lines, which suits the borough's conservation-area streets and their more restrained character.

Housing in Richmond upon Thames

On the valuation list Richmond upon Thames counts about 85,810 homes, 42% flats and 58% houses; 38% predate 1919, 24% are interwar and 37% post-war. Opening up a terrace in Richmond upon Thames usually lands one beam end on the party wall, and 29% of homes here are terraced.

Opening up interwar and post-war houses in Richmond upon Thames

The borough is not only Georgian and Victorian. 24% of homes in Richmond upon Thames were built between 1919 and 1939, and 37% after 1945. A house from either period is commonly planned around a hall with the stair rising towards the front door, and in a two storey house that hall is the escape route from the bedrooms. Taking the hall wall out to make one open space removes that protected route, so the scheme has to show building control another way out. The answer ranges from escape windows in the bedrooms to keeping a fire door at the foot of the stair, and it is agreed before the wall goes.

Opening the kitchen to the garden is usually the second half of the brief. Inside, the knock through is a building control matter. The rear wall can be different on a street covered by an Article 4 Direction, because new doors and windows are among the changes Richmond says can then need planning permission. Richmond lists directions in CA2 covering Gloucester Road, Kew, and CA1 covering Laurel Road, Barnes, among others. Where the direction for your street covers doors and windows, a wider garden opening with new glazed doors should run as a planning application in parallel with the structural design, not after it.

Steel, party wall and building control in TW9

The beam that makes an open-plan space possible has to be right. The engineer we appoint sizes it for the actual loads, we set it on padstones at each end, prop the structure above and take the old wall down in stages before removing the props. Getting the steel and its bearings correct is what keeps floors level and doors square long after the work is finished.

Knocking through is notifiable under the Building Regulations, not planning, so Richmond Council's building control inspects and certifies the structural work. Where the removed wall meets a shared party wall, common in the borough's terraces across TW11 and SW14, you serve party wall notice on the neighbour first. In a listed home the knock-through itself needs listed building consent; in a conservation area, only external changes such as new glazed doors can need planning permission. We check both before we begin.

• Radiator relocation and underfloor heating in the new layout
• Level flooring and threshold removal across the whole space
• Zoned lighting circuits and dimming for a multi-use room

VOA Council Tax stock of properties, March 2025, for all 23 statistical areas in Richmond upon Thames. Counts rounded by the VOA.

Once the open-plan conversion work in Richmond upon Thames is scoped, people usually go on to read home renovation in Richmond upon Thames, our Richmond upon Thames area guide, builders in Richmond upon Thames, converting a garage into living space, open-plan conversion anywhere in London and Building Regulations Explained.

Why Choose GS Renovation in Richmond upon Thames

Richmond homeowners choose GS Renovation for open-plan conversions because we deliver the whole job under one roof: engineer-sized steel on padstones and building control sign-off, sympathetic broken-plan and Crittall detailing for period homes, and tidy staged working. Our founder's 30+ years on the tools stands behind every knock-through.

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254). Structural design is by the consulting engineer appointed to your project.