GS Renovation converts lofts across the Royal Borough of Kingston upon Thames, covering KT1, KT2, KT3, KT5 and KT6. The stock runs from Victorian terraces and villas near the town centre to substantial period houses out towards Richmond Park and Surbiton, so the right loft type varies street by street. We coordinate the engineer and Kingston Council building control.
Matching the conversion to the house
A Victorian terrace with a rear closet wing suits an L-shaped dormer, which wraps over the wing and buys enough space for a bedroom plus an en suite. A semi-detached or detached villa with a hipped roof suits hip to gable with a dormer behind it. A generously proportioned KT2 or KT5 house sometimes needs nothing more than rooflights and a good staircase, because the roof is already tall enough to stand up in across most of its width.
The measurement that decides which of those applies is ridge height, roughly 2.2m to 2.4m from the top of the existing ceiling joists to the underside of the ridge. Riverside and villa properties in Kingston often clear it comfortably. Where a house has been re-roofed with heavier concrete tiles, or has a low-pitched later addition, the engineer's design will need to account for it and the usable floor area drops.
Kingston planning and building control
Detached and semi-detached houses get the larger permitted development volume allowance, commonly cited as 50 cubic metres against 40 for a terrace, and many Kingston schemes proceed on that basis with a lawful development certificate. Conservation areas across the borough, particularly around the older riverside and village centres, remove those rights, and Article 4 directions can too. We check the designation for your address with Kingston Council rather than assuming.
Building regulations are the part that never goes away. The new floor sits on engineer-sized joists carried by steel beams onto padstones, and the old ceiling joists carry none of it. Part B requires a protected stair route to a final exit with fire doors and interlinked alarms, Part K sets the stair rise, going and headroom, and Part L covers insulation. Kingston Council building control inspects at each stage and issues the certificate.
- Water tank removal and conversion to a sealed system
- Mansard conversions where planning will not accept a dormer
- Velux and conservation rooflights fitted and flashed
- New floor joists independent of the existing ceiling
- Head height and ridge survey before design
Why Kingston upon Thames Homeowners Choose GS Renovation
Kingston homeowners choose GS Renovation because we start with the survey and the structure, not a sales brochure. We coordinate the engineer, build the gable or dormer, install the steelwork and new floor, fit a compliant staircase and carry the project through Kingston Council building control to a completion certificate. Fully insured, free no-obligation quotations, and 30+ years of hands-on experience behind our founder.
- One point of contact on the phone, not a call centre
- Registered in England, Companies House no. 14611254
- A written scope and programme agreed before work starts
- Site left safe and secure at the end of every day
- Roof made good, leadwork and guttering finished properly
- New floor structure carried on steel, never on the old ceiling joists