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Open-Plan Conversions South Kensington

Open-plan kitchen, diner and living conversions in South Kensington. Trusted, professional, 30+ years' hands-on experience.

GS Renovation creates open-plan spaces in South Kensington's grand period houses, from Georgian knock-throughs to garden-level kitchen-diners in the SW7 museum quarter. With over 30 years across the Royal Borough of Kensington and Chelsea, we open up these Regency and Victorian townhouses structurally while respecting the proportions, cornicing and character that make them special.

A steel beam installed by GS Renovation over a widened opening onto the garden, with the floor above still propped
The beam seated over a rear opening. Props remain until the bearings are built up and the load is taken.

Open-plan living in South Kensington townhouses

The classic South Kensington project is a knock-through between the front and rear reception rooms, or opening the garden-level kitchen into a single kitchen-diner. The wall between them is almost always load-bearing solid masonry, carrying the storeys above, so this is structural work: our engineer sizes a steel beam to span the new opening and specifies the padstones it bears onto at each end.

Many owners in these tall SW7 houses prefer a broken-plan feel to a fully open box, keeping some separation while gaining light and flow. We install Crittall-style glazed screens and dividers, or leave a generous supported opening with the steel neatly encased, so the period rooms still read as rooms. The result suits the scale of a Georgian or Regency interior far better than stripping it bare.

Beams, party walls and sign-off in SW7

Every open-plan conversion here is built around a properly engineered steel. We prop the structure temporarily, take the wall down in stages, set the beam onto its padstones, and only then remove the props, so the floors above stay fully supported throughout. In an occupied South Kensington home we protect cornicing, floors and joinery, and keep the dust and disruption contained to the working area.

Where the new opening reaches into a party wall shared with the neighbour, the Party Wall Act applies and you serve notice first. The beam installation is notifiable under the Building Regulations, so the Royal Borough of Kensington and Chelsea's building control inspects and certifies it; internal open-plan work needs no planning permission. We coordinate the engineer and the inspections so you deal with one team from start to finish.

  • Bi-fold and sliding door openings onto the garden
  • Openings formed in stages to keep the home usable
  • Zoned lighting circuits and dimming for a multi-use room
  • Rooflights and glazed roofs to bring light deep into the plan
  • Open-plan kitchen-diner conversions
Service areaSouth Kensington · SW7
Local authorityThe Royal Borough of Kensington and Chelsea
Part ofCentral London (Inner London)
Typical homesGrand period houses in the museum quarter
Also covered nearbyKensington, Chelsea, Notting Hill, Knightsbridge and Holland Park

Trusted Open-Plan Conversions in South Kensington

For open-plan conversions in South Kensington, GS Renovation combines structural certainty with respect for a period interior. One team handles the engineer's beam design, safe propping and building control across the Royal Borough, whether you want a full knock-through, a broken-plan layout or Crittall dividers. Occupied SW7 homes are protected throughout, and every job is backed by 30+ years.

  • Materials priced at options, so you choose the finish
  • Broken-plan and Crittall-style options priced alongside full open-plan
  • Dust screens and floor protection in occupied homes
  • Aftercare and snagging support once the job is finished
  • Registered in England, Companies House no. 14611254
  • Heating and radiator positions reworked for the new layout
30+ YearsFounder's experience
Fully Insured5 year guarantee
4.9 / 531 MyBuilder reviews
Building ControlCompliant
Free QuotesNo obligation
Reviews

Rated 4.9 / 5 by our clients

★★★★★ 4.9 average from 31 verified reviews on MyBuilder

★★★★★
Saiid did a complete refurbishment of our small bathroom. This involved ripping out the existing bath/shower, basin, toilet, pipework, and tiles and…
mr52782Barnet · via MyBuilder
★★★★★
Excellent service. George's knowledge and skills are the best in the market. He knows what he is doing, does really high quality work, gives good…
habibazamChigwell · via MyBuilder
★★★★★
The kitchen has been fitted to the high standard. Saaid was polite, professional, tidy, he pays attention to a little details that make huge…
khalid75711Barnet · via MyBuilder
Read all 31 reviews

FAQ

Frequently Asked Questions about Open-Plan Conversions South Kensington

Is a cheap open-plan conversion quote in South Kensington worth taking?

Only if it covers the same work, and usually it does not. A low open-plan conversion figure for a South Kensington home normally excludes the engineer, the Royal Borough of Kensington and Chelsea application or the making good, all of which still have to be paid for at the SW7 property. GS Renovation itemises so the comparison is honest. Ask the cheaper Kensington and Chelsea quotation for the same breakdown. Ring 07472 424 226 and GS Renovation will go through both South Kensington quotations 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.

Can the gap between the two rear closet wings be filled in to make one open kitchen?

It can be built, but the appraisal treats that infill as harm. Paragraph 3.133 records rear elevations with closet wings as the most widespread type in the area, built in stock brick and following a paired or single pattern across the terrace. Paragraph 3.137 states that infilling the space between them harms the regular pattern of solid and void and replaces it with a solid cliff-like appearance. Expect that to be the objection.

Will opening up the lower ground floor bring more light into the front rooms?

Yes, and the lightwell is the part to protect while doing it. The appraisal states at paragraph 3.154 that the open character of lightwells is an important feature. It adds at 3.155 that iron security bars installed within basement window reveals were not part of the original design, and can be unattractive and intrusive if not designed sympathetically. Keeping the well open, with slim glazing, does more than widening the opening.

Can the lower ground floor of a listed terrace be dug down to gain head height?

No, not under the building itself. Local Plan Policy CD11 criterion F states that a basement must not involve excavation underneath a listed building, including vaults. The listed terraces here take in Pelham Crescent, Pelham Place, Onslow Square, Thurloe Square and long runs of Queen's Gate. Where the house is listed, the honest answer is that head height comes from what is already there.

Can a flat in a mansion block be opened up the way a house can?

Not on the same terms. The Local Plan records that flats and maisonettes comprise 85 per cent of the borough's housing stock, and that buildings such as mansion blocks, often in multiple ownership, do not have the permitted development rights a dwellinghouse has. Structural work in a flat also runs through the lease, the freeholder and the other residents of the block, so two consents are being chased at once.

The scheme lowers the lower ground floor slab. What does the council want to see with the application?

A construction method statement from an appropriately qualified civil or structural engineer. Local Plan paragraph 6.113 requires it to cover ground and hydrological conditions of the site including groundwater flow, and temporary propping and other temporary works while safeguarding structural stability, with a draft construction traffic management plan submitted alongside. The Basements Supplementary Planning Document was adopted on 14 April 2016. We appoint the engineer and build to the calculations rather than producing them.

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More GS Renovation Services in South Kensington

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