GS Renovation carries out structural alterations across Knightsbridge, from new openings and replacement joists to underpinning and supported openings in the Georgian and Regency townhouses of SW7. Drawing on 30-plus years in the Royal Borough of Kensington and Chelsea, we design and build alterations that respect the age of the house and satisfy building control.
Structural alterations for Knightsbridge period homes
Period townhouses near South Kensington and Holland Park present alterations that a modern property never does: decayed original joists, walls thickened by centuries of settlement, and basements being lowered to add living space. Each is a structural question. Our engineer surveys the existing fabric first, then specifies replacement joists, new steel openings or underpinning to a design that suits the exact house rather than a standard template.
New openings are formed on engineer-sized steels bearing onto padstones, with temporary propping and staged demolition throughout. Where a Knightsbridge basement is being deepened or a bay stabilised, underpinning is carried out in controlled sequences so the ground beneath the walls is never undermined. We keep the period staircase, cornices and floors protected while the structural work proceeds around them.
Consents and neighbours in Knightsbridge
Because SW7 houses adjoin their neighbours, underpinning and openings near the boundary are almost always notifiable under the Party Wall Act. Underpinning in particular requires notice on adjoining owners, and you serve it, often with a schedule of condition, before excavation begins. This matters most on the tightly packed terraces close to the King's Road and Portobello Road frontages.
Internal structural alterations are approved under the Building Regulations, and the Royal Borough of Kensington and Chelsea's building control inspects and certifies the work. Planning is only engaged when alterations touch the exterior of a listed townhouse or a building in a conservation area. We tell you clearly at the outset which route your project needs and manage the applications for you.
- Building control applications and completion certification
- Steel beam and RSJ installation
- Bressummer and bay window support to period frontages
- Underpinning and foundation strengthening in sequenced bays
- Load-bearing wall removal and new structural openings
Trusted Structural Alterations in Knightsbridge
For structural alterations in Knightsbridge, GS Renovation gives you one team from survey to sign-off. Our engineer designs the openings, joists or underpinning, you serve coordinate building control, and we protect the period fabric as we work. Over 30 years in the Royal Borough means alterations built correctly and certified without loose ends.
- Neighbours given notice before the noisy stages
- Straight advice on what is and is not worth spending money on
- Waste cleared as we go, not left piled in the garden
- Load paths carried properly down to foundations
- Underpinning carried out in sequenced bays, never one long trench
- We build to the party wall award the surveyors agree, to the letter