GS Renovation carries out structural alterations across New Malden and neighbouring Surbiton, working on the 1930s semi-detached and interwar suburban houses that define KT3. In over 30 years we have formed new openings, replaced tired joists, underpinned settled foundations and installed supported openings, always to a structural engineer's design and Kingston Council building control approval.
Structural alterations for New Malden homes
Interwar houses in New Malden throw up a familiar set of structural jobs. Original softwood floor joists can sag or suffer decay near solid walls, wide openings are wanted between rooms on these deeper plots, and the ground movement common to the London clay under this part of Kingston upon Thames can leave a corner needing underpinning. Each of these is a job we take on regularly.
Every alteration begins with a structural engineer. Whether we are forming a new opening with a steel beam on padstones, sistering or replacing joists, or underpinning a foundation in careful hit-and-miss bays, the design is calculated first. We prop temporarily, work in a controlled sequence and never remove support until the permanent structure is fully in place and load-tested.
Consents and controls in KT3
Structural alterations inside a New Malden house are governed by the Building Regulations rather than planning. You will not normally need planning permission to replace joists, underpin or form an internal opening; Kingston Council building control inspects and certifies the work. Planning only comes into play for external changes, and only conservation-area or listed properties need that extra layer of consent, which is rare among these standard interwar semis.
The semi-detached layout means one side of the house shares a party wall with the neighbour. Underpinning near that wall, or cutting an opening that bears into it, is notifiable under the Party Wall Act. We handle the notices and the adjoining-owner coordination alongside the engineering, so consents, controls and the physical work are all managed by the same team from start to finish.
- Temporary works, propping and needling
- Building control applications and certification
- Steel beam and RSJ installation
- Load-bearing wall removal and new openings
- Underpinning and foundation strengthening
Why Choose GS Renovation in New Malden
GS Renovation is the sensible choice for structural alterations in New Malden because you deal with one team throughout. We commission the engineer, serve any party wall notices on the adjoining semi, arrange Kingston Council building control inspections and carry out underpinning, joist and opening work cleanly. Three decades in KT3 means no surprises on these interwar houses.
- Free, no-obligation quotations
- Over 30 years of experience
- Dedicated project management
- Fully insured and guaranteed work
- Building control and planning support
- Clean, tidy and reliable tradespeople