Open-Plan Conversions Kew

GS Renovation creates open-plan spaces in Kew's Victorian and Edwardian terraces, turning cellular front-and-back rooms into bright kitchen-diners and knock-throughs. We handle the steel and Richmond Council building control, so your open-plan conversion near the Gardens is properly engineered and signed off.

In Kew, 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 Kew: 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 Kew 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 Kew's period terraces

The classic Kew conversion joins the two reception rooms into one, or opens the kitchen through into the side return and closet wing to make a family kitchen-diner. Because the wall between those rooms is load-bearing, this is not a simple knock-through. A structural engineer sizes the steel beam and padstones so the floors and masonry above are carried once the wall comes out.

Not every homeowner wants a single vast room, and broken-plan suits these terraces well: a Crittall-style glazed divider or a part-height wall keeps the light flowing while marking off a snug or study. We build these in alongside the structural opening, keeping the original bay window, cornices and proportions that make Kew's terraces so sought after.

Housing in Kew

Of the 4,470 homes the valuation list records in Kew, 62% were built before 1919, 6% between the wars and 31% since 1945; 43% are flats and 57% are houses. 31% of homes here are terraced; opening up a terrace in Kew usually lands one beam end on the party wall.

Open plan in a Kew house with rooms above: the fire route

57% of Kew homes are houses, and in a house an open-plan ground floor usually means the stair lands in the new room rather than in a hall. In a two storey house the Building Regulations can allow that, but the bedrooms then rely on windows large enough and low enough to escape through, and a kitchen at the foot of the stair changes the risk. Where there are rooms on a third level, the stair normally has to stay protected to an exit, so the open plan needs a different fire design.

That is why the fire design is drawn with the structure. Richmond Council runs its own building control service, which checks notifiable work against national Building Regulation standards, and a Full Plans application puts plans and detailed specifications in front of it before work starts. For a Kew open plan, that application shows the beam from the structural engineer we appoint and the escape route in one set of drawings, and Richmond decides it within five weeks. That beats finding out on site that the stair needs a door there is no room for.

Engineered and signed off in TW9

We prop the structure, take the wall down in stages and set the RSJ onto padstones, then Richmond Council building control inspects and certifies the beam under the Building Regulations. This is building regulations work, not planning, unless you are also altering the exterior in a conservation area near Kew Gardens, in which case we flag the separate consent you would need, as we do listed building consent for a listed home.

Since the wall usually meets the shared party wall with the neighbouring terrace, the opening is notifiable under the Party Wall Act, and you serve notice before work starts. From engineer's drawings and Crittall dividers through to plastering and sign-off, one team runs the whole conversion, working cleanly around a home you are still living in.

• Openings formed in stages to keep the home usable
• Rooflights and glazed roofs to bring light deep into the plan
• Side-return integration for a wider ground floor

VOA Council Tax stock of properties, March 2025, for Kew Gardens. Counts rounded by the VOA.

Plenty of Kew projects start with one job and grow, so it helps to see home renovation in Kew, open-plan conversion across Richmond upon Thames, builders in Richmond upon Thames, garage conversions, how we handle open-plan conversion across London and Knock-Through Guide.

The GS Renovation Difference in Kew

For open-plan conversions in Kew, GS Renovation delivers the whole project through one accountable team: engineer-sized steel on padstones, Crittall or broken-plan dividers built in, and Richmond Council building control sign-off. We protect the period features of your TW9 terrace, keep the site tidy in an occupied home, and back it all with our founder's 30+ years of structural experience.

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.