GS Renovation carries out structural alterations throughout Kensington, from Regency townhouses near the King's Road to listed properties within the borough's conservation areas. Over more than 30 years in W8 we have formed new openings, replaced tired joists, underpinned settled foundations and installed supported openings, all engineer-designed and signed off under the Building Regulations.
Structural alterations for Kensington's period homes
Kensington's Georgian and Regency housing was raised generations ago, so the alterations we are asked for reflect their age: new openings punched through solid brick cross walls, sagging or beetle-damaged joists replaced, and supported openings formed between reception rooms. Each begins with a structural engineer specifying the steel beam and padstones, because the masonry above needs a designed load path before any opening is cut into a wall that has stood for two centuries.
Older townhouses off Holland Park and near South Kensington sometimes show movement in their foundations, and underpinning is the answer where a wall has settled. We work in bays, excavating and pouring in a sequence the engineer sets so the structure is never undermined. Temporary propping supports the building throughout, and every beam is set on padstones sized to carry the load safely into sound brickwork below.
Consents and sign-off across the Royal Borough
New openings, replacement joists, underpinning and supported openings are all notifiable under the Building Regulations, so the Royal Borough of Kensington and Chelsea's building control inspects the work at key stages and certifies it on completion. This is separate from planning: unless you alter a listed exterior or a conservation-area frontage, internal structural alterations in W8 do not need planning permission, and we keep the two processes from being confused.
Where an alteration affects a wall shared with the neighbouring property, the Party Wall Act applies and you serve notice before starting. Many Kensington homes are also listed or sit within conservation areas, so we check that status early and, where interior fabric is protected, factor listed-building consent into the plan. We hold the engineer's calculations on site for the inspector at every visit.
How Georgian construction changes the approach
A stucco fronted Kensington townhouse is not built like a Victorian terrace, and the differences are structural rather than decorative. The front elevation is brick finished in lime stucco, which cracks visibly if anything below it moves, so settlement is watched far more closely. Floors span between cross walls on shallow bearings. And the lower ground floor often sits partly below external ground level, with vaults running out under the pavement.
Those vaults matter a great deal. They mean a load path can pass over a void rather than continue down to solid ground, which changes where a new beam is permitted to bear. Timber is another factor, since joists in houses of this age are usually good quality but modest in section and have been notched about by generations of plumbers. We open up and record all of it before the engineer designs, because the plan rarely tells the truth.
- Chimney breast removal and support to the stack above
- Floor structure, joist and beam replacement
- New door and window openings in solid masonry
- Wall plate, joist hanger and restraint strap installation
- Party Wall Act 1996 notices, awards and schedules of condition
Trusted Structural Alterations in Kensington
Kensington homeowners rely on GS Renovation because structural alterations in W8 need doing once and doing right. One team manages the engineer's design, any listed or conservation checks, and the Royal Borough's building control sign-off. We prop, work in sequence and keep occupied period homes clean throughout, all backed by more than 30 years across the borough.
- Founder-led team with 30+ years of hands-on experience
- Materials priced at options, so you choose the finish
- Work sequenced around the surveyors' schedule of condition before excavation
- Clean, tidy and reliable tradespeople
- Underpinning carried out in sequenced bays, never one long trench
- Neighbours given notice before the noisy stages