Heat load surveys and system design in Chelsea
Every Chelsea quote starts with a room-by-room survey rather than a guess from floor area. Many London homes are flats or tall terraces, where heat rises to the top floor and the bedrooms bear the brunt of a hot spell.
For self-builds and extensions in Chelsea, a standalone design pack can go straight to your builder. Chelsea is about 2 miles from central London and falls within our London coverage. That includes the SW3 and SW10 postcode districts.
Prices in Chelsea
Our London guide price for heat load surveys and system design is £495–£1,645 for a standalone design pack, VAT included. That is above the UK middle, mainly because labour and access cost more in London. The design pack price depends mainly on the number of rooms and whether full drawings and equipment schedules are needed. On our London figures, the Design pack option (drawings and schedules for one home) is about £495–£1,045.
Home survey
Free with an installation quote.
Design pack
Drawings and schedules for one home.
Self-build pack
Whole-house design for a new build.
Planning and permissions
Since 29 May 2025, England's permitted development rules allow larger outdoor units (up to 1.5 m³) and no longer require a 1 m gap to the boundary, provided the MCS 020(a) noise check is met. Listed buildings and pitched-roof installs still need permission.
The survey
At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote. Surveys in Chelsea cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Every job in Chelsea includes:
- Room-by-room heat gain and heat loss
- Equipment selection and outdoor unit sizing
- Pipe and drain routes
- Written proposal with options
- Electrical load for your electrician
Nearby
We also cover Battersea (1 mile), Fulham (1 mile) and Westminster (2 miles). See all services in Chelsea or heat load surveys and system design across London.