Open-Plan Conversions Bermondsey

GS Renovation creates open-plan spaces across Bermondsey, opening up post-war flats, warehouse conversions and new-build apartments throughout SE16 into flowing kitchen-diners and broken-plan living. We combine the engineering behind a clean knock-through with the joinery and Crittall dividers that make a riverside flat feel twice the size.

In Bermondsey, 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 Bermondsey: 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 Bermondsey 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 Southwark 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 Bermondsey apartments

The appeal of a Bermondsey warehouse flat is its volume and light, and homeowners often want the internal partitions gone to make the most of it, turning a boxed-off kitchen and living room into one bright, connected space overlooking the water. Some of those dividing walls are non-structural studwork that comes out in a day; others are original masonry carrying the floors above. We survey with an engineer so the design starts from what is actually holding weight.

Where a load-bearing wall stands between you and the open plan you want, we replace it with a concealed steel beam, sized by the engineer and bearing onto padstones, propped and cut in safe stages. For broken-plan schemes we often introduce a Crittall-style glazed screen, keeping the loft-industrial feel of the conversion while zoning the kitchen from the living area without closing the space back in.

Housing in Bermondsey

By the valuation list's count, Bermondsey holds about 27,150 homes, 11% houses and 89% flats; by age, 9% were built before 1919, 12% between the wars and 73% since 1945. Since most homes here are flats, opening up a flat in Bermondsey changes its fire escape route, which building control checks.

Why a Bermondsey flat gains space by opening up rather than extending

In Bermondsey 89% of homes are flats, and Southwark's Householder SPD says building a single storey rear extension without planning permission is not applicable to homes which are flats or maisonettes. For a flat owner, extra floor area outside the walls means a planning application and the freeholder's consent at the same time. The space already inside the flat is the realistic place to find more room, and an open-plan layout is how you find it.

A listed building is the exception: work that affects its character, inside or out, including an extension or taking out a wall or chimney breast, needs listed building consent from Southwark Council, and doing it without consent is a criminal offence.

Start the design from the fixed points, not the walls. The soil stack, the kitchen extract route and the entrance door stay where they are, so the plan works outward from them. In a Bermondsey block built in 2000 or later, which is 32% of the stock, the risers sit in the building's service shafts and are not yours to move. A sink that ends up a long way from the stack needs a pumped waste or a raised floor, and that decision belongs at the design stage rather than after the walls have gone.

Consents and building control across SE16

An open-plan conversion in a leasehold Bermondsey flat needs more than demolition. Any structural beam is inspected and certified by Southwark Council's building control under the Building Regulations, and because the flat is leasehold the freeholder's licence to alter is required, with the managing agent typically wanting drawings and insurance before consenting. Where a wall is shared with the neighbouring flat, a party wall notice is needed too, which you serve as building owner with the drawings we supply. We arrange the rest before starting.

Knocking rooms together changes how sound travels, so we protect the acoustic separation your lease and the regulations require between flats, keeping impact and airborne noise within limits after the walls come down. We work within the block's rules on hours and access, keep dust contained in an occupied home, and finish with plastering, flooring and any glazed dividers so the space is ready to live in, not just structurally open.

• Level flooring and threshold removal across the whole space
• Rooflights and glazed roofs to bring light deep into the plan
• Heat loss and acoustic considerations before the wall comes out

VOA Council Tax stock of properties, March 2025, for all 6 statistical areas in Bermondsey. Counts rounded by the VOA.

Two or three things usually come up alongside open-plan conversion on a Bermondsey job: home renovation in Bermondsey, open-plan conversion across Southwark, side return infills, converting a garage into living space, our London open-plan conversion page and RSJ & Load-Bearing Walls.

Trusted Open-Plan Conversions in Bermondsey

Bermondsey homeowners choose GS Renovation because an open-plan conversion joins structural engineering, consents and finishing under one accountable team. We install and conceal the steel to the engineer's sizing, secure the freeholder's licence to alter, handle any Southwark building control, protect sound insulation between flats, and finish tidily in your occupied SE16 flat, backed by our founder's 30+ years on the tools.

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.