Builders and basements in Hampstead and St John’s Wood.
North London · N2 · North London house, reconfigured and fitted outCase study
Hampstead sits on the hill, St John’s Wood in the valley below it. We build across both.
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Houses on the hill, villas in the valley below.
- NW3 · NW8
- A hilltop and a valley, two boroughs
- Camden · Westminster
- The two planning authorities here
- 7 days
- A budget estimate, typically
NU Projects is a design and build company in Fulham SW6, founded in 2010. We design, price and build homes in Hampstead and St John’s Wood NW3. The calculator gives your own range in a minute, by scope and finish. A new basement dig typically runs £500k to £900k. Converting an existing basement runs £180k to £300k. Call 020 7731 6841, and a budget estimate typically follows within seven days. Buying a house here, the free Buyer’s Report gives a budget in 24 hours.
Hampstead is Georgian and Victorian houses on a hill, many looking over the heath. St John’s Wood is flatter, with white stucco villas and mansion blocks.
Both are family houses more often than flats. Gardens matter as much as the rooms. A basement is a common way to add space without losing the garden.
Hampstead falls within the London Borough of Camden. St John’s Wood falls within the City of Westminster. Conservation areas cover most of Hampstead village and part of St John’s Wood. Sources: Camden Local Plan 2017 and Westminster City Plan 2019-2040 (2026). Both read on 7 October 2026.
We price work in both areas on our own rate card, open book. A detailed budget estimate is usually with you within seven days.
NearbyPrimrose HillHighgateMaida ValeIslingtonRegent’s Park
- Council
- London Borough of Camden and City of Westminster
- From the studio
- Our Fulham studio is about 6 miles away, as the crow flies.
Also near youMarylebone, Bayswater and Maida ValeIslington, Highgate and Primrose HillMayfairNotting Hill and Holland ParkKnightsbridge
North London house, reconfigured and fitted out.
A 3,500 sq ft private house, reconfigured and fitted out throughout.
North London·N2·House
Our nearest work, in North London
See the projectCase study
You have produced something extraordinary. You guys are true professionals.
Five kinds of job, one contract.
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Basements
Hampstead is Camden. St John’s Wood is Westminster. Each council has its own basement policy, and neither is Kensington and Chelsea’s CD11.
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Extensions and lofts
Gardens matter as much as the rooms in both areas. An extension is sized to protect the garden, not just the footprint.
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Architecture
Hampstead’s Georgian and Victorian houses sit on a hill. St John’s Wood is flatter, with white stucco villas and mansion blocks.
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Interior design
A Hampstead house or a St John’s Wood villa, family living drives the layout. More than a single showpiece room.
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Construction
Conservation areas cover most of Hampstead village and part of St John’s Wood. The build is sequenced around that.
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In depth herePlanning consultants in St John’s WoodPlanning consultants in HampsteadBasement construction in St John’s WoodBasement construction in HampsteadLuxury refurbishment in St John’s WoodLuxury refurbishment in HampsteadLoft conversion in St John’s WoodHouse extensions in St John’s WoodHouse extensions in HampsteadInterior design in St John’s WoodInterior design in HampsteadBespoke joinery in St John’s WoodBespoke joinery in HampsteadParty wall surveying in St John’s WoodParty wall surveying in HampsteadLoft conversion in HampsteadArchitectural design in St John’s WoodArchitectural design in HampsteadBasement swimming pools in St John’s WoodBasement swimming pools in HampsteadBasement gyms in St John’s WoodBasement gyms in HampsteadBasement cinema rooms in St John’s WoodBasement cinema rooms in HampsteadBasement golf simulator rooms in St John’s WoodBasement golf simulator rooms in HampsteadLuxury painting and decorating in St John’s WoodLuxury painting and decorating in HampsteadDesign and build in HampsteadDesign and build in St John’s WoodMEP services in St John’s WoodMEP services in Hampstead
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The studio is at 10-12 Fulham High Street, London SW6 3LQ. Call 020 7731 6841 or send the form below.
What owners in Hampstead and St John’s Wood ask us.
Further reading, from the blog
Which councils cover Hampstead and St John’s Wood?
Camden for Hampstead, the City of Westminster for St John’s Wood.
Hampstead became a conservation area on 29 January 1968.
St John’s Wood followed in 1967, extended in 1979 and 2007.
Is a basement common in Hampstead?
Yes, it is a common way to add space without losing the garden.
We price it against Camden’s own policy, not CD11.
What are Camden’s rules for a basement in Hampstead?
Camden’s Local Plan Policy A5 allows one storey, about three to four metres deep.
It may not go under an existing basement. It may cover half of each garden at most.
A Basement Impact Assessment is required, checked by an independent auditor.
Since 1 June 2017 a Camden-wide Article 4 direction means every basement needs planning.
Do St John’s Wood basements follow Camden’s rules?
No. St John’s Wood is Westminster, under its City Plan Policy 50.
One storey below the lowest original floor, under no more than half the garden.
What kind of houses are typical in St John’s Wood?
White stucco villas and mansion blocks, flatter than Hampstead’s hillside streets.
How much does a Hampstead renovation cost?
Cost turns on the property, the garden and the scope.
Try the calculator first, then send the address across for a cost plan.
Tell us about your home in Hampstead and St John’s Wood.
Your name and one way to reply are enough. It goes straight to the studio.
- Already have an architect or designer? We build to their design. Working with your designer
- An NDA on request, and your home is never published without your consent. How we work in confidence