East London & Essex
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Bedrooms and a bathroom in the roof, without losing any garden. Surveyed, designed, approved and built by one team.

Walthamstow has long runs of matching terraces, so neighbouring houses often already have L-shaped dormers, which makes the case for yours straightforward.
An L-shaped dormer over the back addition is the most common loft here, giving two rooms and a bathroom. Chingford’s hipped semis suit hip-to-gable conversions.
L-shaped dormers on terraces are usually permitted development outside the conservation areas, up to 40 cubic metres. In Walthamstow Village and Chingford Green the front roof slope is protected and dormers need planning permission. Applications go to the London Borough of Waltham Forest. We handle them for you.
We measure the roof and head height and tell you straight away what is possible.
Stair position, rooms, bathroom and storage designed around the roof you have.
Planning or a lawful development certificate, building control, fire safety and party wall notices.
Built and finished by one team, with the house protected throughout.
Almost always. Steel beams usually bear into the party wall, so we serve notice on your neighbours and arrange the party wall surveyors before work starts.
Yes. Building regulations require a proper stair with safe head height. Its position decides the layout of the whole floor, so we fix it first.
As a guide, you need about 2.2 metres from the top of the ceiling joists to the underside of the ridge. We measure this at the first visit, before any drawing is paid for.
Often not. Most rear dormer and hip-to-gable conversions are permitted development, up to 40 cubic metres on a terraced house and 50 on a semi-detached or detached house. Conservation areas, flats, listed buildings and mansards need planning permission.






We take a limited number of houses each year. A director reviews every enquiry.