Architects in Chelsea.
Chelsea · SW3 · Chelsea townhouse, opened up and fitted outCompleted work, photograph
Architecture for Chelsea townhouses and terraces, from basements to rooflights. Drawn by the team that builds it.
Chelsea houses, designed through every storey.
- RIBA
- Architects inside a design and build studio
- 1,200 sq ft
- One Chelsea basement, under the full footprint
- SW3 · SW10
- Terraces, townhouses and garden squares
NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle architecture and planning drawings in Chelsea SW3, under one contract. Construction runs from £215 to £800 a sq ft, luxury to super prime finishes. Call 020 7731 6841, and a budget estimate typically follows within seven days.
Chelsea houses mostly stay whole houses. A design here runs through every storey.
One Chelsea townhouse we built had no room to build up or out.
So the design went down, with a basement under the full footprint.
Above it, the house was opened up under a long rooflight.
Another Chelsea terrace was reconfigured structurally, floor by floor, over four floors.
Our RIBA architects drew both, and the same studio built them.
What the borough asks of a Chelsea design.
- Council
- Royal Borough of Kensington and Chelsea, under its 2024 Local Plan.
- Listed houses
- Policy CD5 counts the order of rooms and original staircases in the listing.
- Roofs
- Policy CD12 resists extra storeys on terraces with complete, unaltered rooflines.
- Rear additions
- Policy CD13. Additions must not break the even rhythm along the terrace.
- Basements
- Policy CD11. One storey, and no digging beneath a listed building.
- Trees
- A basement must not harm trees of townscape or amenity value.
Source: Kensington and Chelsea’s Local Plan 2024, Policies HO1 and CD4 to CD13. Read on 7 October 2026. Policies change, so we read them again for your address.
Designed and built in Chelsea.
Chelsea·Townhouse
Chelsea townhouse, opened up and fitted out
A Chelsea townhouse, opened up above a new basement under its full footprint.
See the project
Chelsea·Terraced house
Chelsea terraced house
A Chelsea terrace, structurally reconfigured over four floors.
See the projectCompleted work, photographs
What architects costs in Chelsea.
£250 to £650a sq ft, construction only. Our full renovation band.
£500 to £800a sq ft, construction only. Our super prime finish band.
Architecture is priced per project, once the brief is clear.
Construction is priced on our per square foot bands.
Listed or super prime work is priced on the higher band.
What Chelsea owners ask about architecture.
In Chelsea
- Every service in Chelsea
- Basement construction in Chelsea
- House extensions in Chelsea
- Interior design in Chelsea
- Luxury refurbishment in Chelsea
- Bespoke joinery in Chelsea
- Party wall surveying in Chelsea
- Loft conversion in Chelsea
Architecture nearby
- Architects across London
- Architects in Fulham
- Architects in Belgravia
- Architects in Kensington
- Architects in Notting Hill
- Fulham
- South Kensington
- Knightsbridge
- Kensington
Further reading, from the journal
Who designs a Chelsea project at NU?
Our RIBA architects, beside our interior designers and quantity surveyor.
The same studio then builds what it drew.
Can I extend a Chelsea house upward?
Only where the terrace allows. Policy CD12 reads the whole group.
Complete rooflines usually stay as they are.
We look at the whole street before drawing.
Can a listed Chelsea house have a basement?
Not beneath the house itself. Policy CD11 rules out digging under a listed building.
A dig in the garden may be possible, with care for the foundations.
How does a Chelsea design make room without a bigger footprint?
By reworking the plan, and often by going down one storey.
Our Chelsea townhouse gained a 1,200 sq ft basement that way.
How are architecture fees in Chelsea priced?
Per project, from the actual scope.
The build itself runs on our bands, construction only.
Tell us about your home in Chelsea.
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