Loft Conversions in Hampstead, NW3
Dormer, hip-to-gable and mansard loft conversions for houses in Hampstead: a bedroom and bathroom under the roof, designed and built by one team.
Covered under one contract
- Structural design and calculations
- Planning or lawful development certificate
- New staircase, dormer and roof windows
- Insulation, fire safety and building control
- En-suite designed and fitted
- Waterproofing with guarantee for basements
Loft Conversions in Hampstead.
A loft conversion adds a bedroom and bathroom without touching the garden, and in most of Hampstead it is the most cost-effective way to gain a floor. Which type suits your house depends on the roof: Victorian and Edwardian terraces usually take a rear dormer, 1930s semis with hipped roofs need a hip-to-gable conversion to make the space usable, and in conservation areas a mansard or rooflight scheme may be the only option.
We start by measuring the roof. About 2.2 metres from the top of the joists to the ridge is needed for a comfortable room; we check this at the first visit before anything is drawn. From there our architects design the layout and the stair, our engineers design the new floor and any steelwork, and our team builds it with the house occupied throughout.
Most lofts are permitted development within the 40 or 50 cubic metre allowance, with the dormer at the rear. Flats, listed buildings and streets with Article 4 directions need a planning application, and every loft needs building regulations approval for the structure, fire escape and insulation. We manage all of it.
- Area
- Hampstead, NW3
- Council
- London Borough of Camden
- Housing
- Georgian and Regency houses in the village, large Victorian and Edwardian houses on the Fitzjohns and Redington estates, Arts and Crafts houses, converted flats
- Transport
- Hampstead (Northern), Hampstead Heath (Overground)
- Loft, on site
- 8 to 12 weeks
- Headroom needed
- About 2.2 m at the ridge
- Consent
- Often permitted development for lofts
Hampstead: the houses and the planning rules.
Hampstead is a village on a hill with the Heath beside it: Georgian houses on Church Row and Flask Walk, red-brick Victorian mansions on Fitzjohns Avenue, Arts and Crafts houses on the Redington estate and a scatter of modernist infill. The housing is large, the plots are steep and irregular, and almost all of it is in a conservation area.
Projects in Hampstead tend to be substantial: whole-house refurbishments with basements, rear extensions that negotiate a sloping garden, and lofts within the tall Victorian roofs. Camden's conservation officers take the village character seriously, so we invest in the design and the heritage case before submitting anything.
The Hampstead Conservation Area covers the village and its surroundings, with Fitzjohns/Netherhall and Redington/Frognal alongside.
London Borough of Camden
Camden decides applications and applies Article 4 directions across much of Hampstead, removing permitted development for extensions, roof changes and front alterations.
Basements
Camden's basement policy requires a Basement Impact Assessment covering ground conditions, drainage and neighbouring structures, and limits depth and footprint.
Heath and trees
Tree preservation orders and Heath views are material considerations on many streets; we survey trees early.
Approvals for loft conversions in Hampstead.
Most loft conversions are permitted development within the 40 cubic metre allowance for a terrace or 50 for other houses, with the dormer at the rear. Conservation areas, flats and front dormers need a planning application, and every loft needs building regulations approval.
Camden decides applications and applies Article 4 directions across much of Hampstead, removing permitted development for extensions, roof changes and front alterations.
What loft conversions in Hampstead includes.
- Structural design and calculations
- Planning or lawful development certificate
- New staircase, dormer and roof windows
- Insulation, fire safety and building control
- En-suite designed and fitted
- Waterproofing with guarantee for basements
From site visit to handover.
- 01
Site visit & consultation
We visit, listen and measure. Brief, budget and constraints understood before any advice is given.
- 02
Design & itemised quote
Our architects and engineers draw the scheme, and from that we provide a transparent, itemised quotation for your approval.
- 03
Planning & approvals
Planning applications, building control and party wall matters handled for you.
- 04
Build, managed weekly
Our own trades, sequenced by a site manager. Progress reported every week.
- 05
Handover & aftercare
Joint snagging walk-through, documentation, and a guarantee on our workmanship.
Loft Conversions in Hampstead: your questions.
Is a loft conversion in Hampstead permitted development?
Often, provided the added volume is within 40 cubic metres for a terrace or 50 for other houses and the dormer is at the rear. Flats, listed buildings and streets with Article 4 directions need an application to the London Borough of Camden.
How much headroom do I need for a loft conversion?
About 2.2 metres from the top of the ceiling joists to the ridge. Victorian and Edwardian roofs usually have it; 1930s hipped roofs often need a hip-to-gable conversion to make the space usable. We measure at the first visit.
Which parts of Hampstead do you cover?
All of Hampstead and NW3, including Church Row, Fitzjohns Avenue, Redington Road, Frognal, Well Walk, Flask Walk, and the neighbouring districts. We are based in London and our teams work across central, north, north-west, west and south-west London.
Other services in Hampstead.

House Refurbishment in Hampstead
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Flat Refurbishment in Hampstead
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House Extensions in Hampstead
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Structural Alterations in Hampstead
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Basement Conversions in Hampstead
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Kitchen Renovation in Hampstead
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Bathroom Renovation in Hampstead
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Architectural & Interior Design in Hampstead
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Planning Permission & Building Regulations in Hampstead
Read moreLoft Conversions across London.
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We will visit, listen and explain what is possible for your property and how it would be approved. No pressure, no sales pitch.
