
Loft conversions in West London.
Fulham · SW6 · Fulham house, refurbished throughoutCase study
Dormers and mansards on West London roofs, designed with the whole terrace in mind.
A West London roof, read with the whole terrace.
- Policy CD12
- Roofs judged with their neighbours
- Dormer or mansard
- Settled once the terrace is read
- Upper flats
- Freeholder consent as well as planning
NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle loft conversions, dormers and mansards in West London W/SW, under one contract. A main dormer loft typically runs £90k to £140k. A mansard loft runs £140k to £220k. Call 020 7731 6841, and a budget estimate typically follows within seven days.
A loft here is judged by the street as much as by the house. Where a terrace roofline is untouched, an added storey is usually resisted.
Where several neighbours have already built up, filling the gap can be accepted. So we walk the street before we draw anything.
Fulham’s guidance treats front roof extensions as generally unacceptable. So dormers sit at the back. In Kensington and Chelsea, a mansard depends on the neighbours.
We renewed a Fulham family house from the basement to the roof. A Chelsea terrace we renovated finishes in a roof terrace.
What the borough allows on a West London roof.
- Council
- Kensington and Chelsea governs Chelsea, Kensington and Notting Hill, through its 2024 Local Plan. Fulham sits with Hammersmith and Fulham.
- Policy CD12
- Roof changes must suit the character of the building and its group.
- Intact terraces
- No extra storey where the group roofline is unaltered.
- Broken terraces
- Where several houses already rose, filling the gaps can be accepted.
- Pitched roofs
- Roofs with eaves are named as unsuitable for an added storey.
- Upper flats
- A flat has no householder permitted development rights. The freeholder must also agree.
Source: Kensington and Chelsea’s Local Plan 2024, Policies CD12 and CD13. Read on 6 October 2026. Policies change, so we read them again for your address.
Built up to the roof in West London.

Fulham·House
Fulham house, refurbished throughout
A child’s room under the roof of a Fulham family house, with two rooflights.
See the project
Chelsea·Terraced house
Chelsea terraced house
A roof terrace with an outdoor kitchen, on a Chelsea terraced house.
See the projectCase study
What a loft conversion costs in West London.
£140k to £220kA mansard loft. A project total, from our 2026 cost guide.
£90k to £140kA dormer loft. A project total, from our 2026 cost guide.
A West London roof is priced once the terrace has been read.
Guide figures are project totals.
Fees, party wall costs, contingency and VAT are added to both.
What West London owners ask about lofts.
In West London
- Every service in Fulham
- House extensions in West London
- Architectural design in West London
- Planning consultants in West London
- Party wall surveying in West London
Lofts nearby
- Loft conversion across London
- Loft conversion in St John’s Wood
- Loft conversion in Highgate
- Loft conversion in Fulham
- Loft conversion in Marylebone
- Loft conversion in Notting Hill
- Loft conversion in Chelsea
- Loft conversion in Kensington
- Loft conversion in South Kensington
- Loft conversion in Knightsbridge
- Loft conversion in Belgravia
- Loft conversion in Mayfair
- Loft conversion in Holland Park
- Loft conversion in Hampstead
- Loft conversion in Primrose Hill
- Loft conversion in Earl’s Court
- Loft conversion in Pimlico
- Loft conversion in Westminster
- Loft conversion in Weybridge
- Loft conversion in Cobham
- Loft conversion in Oxshott
- Loft conversion in South West London
- Loft conversion in North London
- Loft conversion in South London
- Fulham
- Chelsea
- Kensington
- Notting Hill and Holland Park
Further reading, from the blog
Can I add a mansard to my West London house?
It depends on the terrace. An unbroken roofline usually rules one out.
Where neighbours have already built up, infill can be accepted.
Do loft conversions in West London need planning?
In conservation areas, roof permitted development rights do not apply.
Most of Kensington and Chelsea is conservation area.
Outside them, a Fulham terrace may add up to 40 cubic metres.
Can I convert the loft above my flat?
A flat has no householder permitted development rights.
Planning is needed, and the freeholder must agree too.
What does a West London loft conversion cost?
A dormer loft runs £90k to £140k, from our 2026 cost guide.
A mansard is £140k to £220k. Both are project totals.
See it builtNear West London
See it built.
Finished homes, designed, priced and built by NU.

Fulham · SW6 House
Fulham Victorian house
A Victorian Fulham house, opened up, with a glazed kitchen extension.
Case study

Chelsea · SW3 Townhouse
Chelsea basement and extension
A new basement, a kitchen extension and a full interior renovation.
Case study

West London Joinery
West London bespoke joinery
Made to measure kitchens, bookshelves, wardrobes and media walls for homes across London.
Case study
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