GS Renovation converts lofts in East Ham, on the long Victorian and Edwardian terraces that run through E6 towards West Ham Park and the Royal Docks. These are two storey houses with useful ridge heights, and a rear dormer or L-shaped dormer over the closet wing is usually straightforward. We coordinate the engineer and handle Newham Council building control.
Adding a third storey to an E6 terrace
East Ham terraces were built to a consistent pattern, which makes them predictable to survey. Measure from the top of the ceiling joists to the ridge: roughly 2.2m to 2.4m and the conversion works without touching the ceilings below. A plain rear dormer on the main back slope costs roughly £45,000 to £65,000 on indicative London ranges for 2026, and extending it over the closet wing as an L shape takes that to roughly £55,000 to £80,000 while adding a usable second room.
Going from two storeys to three is the point where fire safety stops being a formality. Part B will want a stair route protected all the way to a final exit, fire doors to the rooms opening onto it, interlinked mains alarms on every level, and often an escape window in the new room. Newham building control agrees that strategy with us before the stair goes in, because retrofitting a protected route into a finished house is expensive.
Structure, party walls and Newham Council
The existing ceiling joists in an E6 terrace were sized to hold up a ceiling, not to carry people, furniture and a bathroom. New floor joists are sized by a structural engineer and sit on steel beams spanning between the party walls on padstones, clear of the old ceiling below. Cutting those bearings into a shared wall makes the work notifiable under the Party Wall etc. Act 1996, and the duty to serve notice is yours as building owner. We prepare everything your surveyor needs.
On planning, terraced houses are commonly cited as having a 40 cubic metre volume allowance under permitted development, subject to matching materials, obscure glazed side windows and nothing forward of the existing roof plane. Newham Council maintains conservation areas where those rights do not apply, so we confirm the position for your address before design. Building regulations apply in every case, and we take the job through to a completion certificate.
- Velux and conservation rooflights fitted and flashed
- Ventilation paths kept clear at eaves and ridge
- Insulation between and over rafters to Part L
- Dormer cheeks, flat roof and leadwork detailed to last
- Building control inspections booked at floor, steel and completion
Why East Ham Homeowners Choose GS Renovation
East Ham families choose GS Renovation because a loft is often the cheapest way to a fourth bedroom in E6, and it only works if the structure and fire strategy are right. We coordinate the engineer, install the steel to their design, prepare party wall notices, manage Newham building control and finish the rooms properly. Fully insured, dedicated project manager, free no-obligation quotations.
- Neighbours given notice before the noisy stages
- Free, no-obligation quotations
- A written scope and programme agreed before work starts
- Honest answer at survey if your roof will not take a conversion
- Water tank removed and the system converted where it blocks the space
- Dust screens and floor protection in occupied homes