GS Renovation carries out structural alterations across Stanmore, from new openings to replacement joists and underpinning in the borough's 1930s semi-detached and interwar houses. With over 30 years of experience in HA7 and the surrounding Harrow neighbourhoods, we plan every supported opening and repair around a structural engineer's design and Harrow Council building control.
Structural work in Stanmore's suburban houses
The interwar homes on Stanmore's generous plots were built to last, but decades of use bring their own structural jobs: forming a wide opening between kitchen and garden, replacing tired or overloaded floor joists, adding a supported opening for bi-fold doors, or underpinning where a corner has settled. Each starts with an engineer assessing the existing structure and specifying exactly how the loads will be carried once the alteration is complete.
For new openings we install steel beams that bear onto padstones, propping the structure temporarily and taking the masonry down in a controlled, staged sequence. Where joists need replacing we match spans and bearings to the engineer's schedule, and where underpinning is called for we work in short, sequenced bays so the ground beneath your Stanmore home is never undermined all at once.
Engineer and building control across HA7
Structural alterations in an HA7 property are notifiable under the Building Regulations, so Harrow Council's building control, or an approved inspector, reviews the engineer's calculations and inspects the beams, padstones and any underpinning before sign-off. This is separate from planning: unless your home is listed or the exterior work sits in a conservation area, you will not need planning permission for internal structural changes.
Where an alteration touches a wall shared with the attached half of a Stanmore semi, the Party Wall Act applies and you serve notice on that neighbour in good time. We co-ordinate the engineer and the inspections as one package, so the calculations, the propping, the steel and the certificate all line up and the job proceeds without avoidable delays.
- Structural surveys and engineer coordination
- Building control applications and completion certification
- Floor structure, joist and beam replacement
- Underpinning and foundation strengthening in sequenced bays
- Lintel replacement and repair over failed openings
Why Stanmore Homeowners Choose GS Renovation
For structural alterations in Stanmore, GS Renovation gives you a single team responsible from survey to sign-off: engineer-designed beams and underpinning to any attached neighbour, Harrow building control inspections and clean, sequenced working. With 30+ years in HA7 and around Harrow, we deliver alterations that are safe, certified and built to last.
- Founder-led team with 30+ years of hands-on experience
- One point of contact on the phone, not a call centre
- Neighbours given notice before the noisy stages
- Building control inspected at foundation, steel and completion
- Registered in England, Companies House no. 14611254
- The engineer's calculations obtained and worked to on site