Heat load surveys and system design in Thamesmead
For self-builds and extensions in Thamesmead, a standalone design pack can go straight to your builder. London's dense streets hold heat overnight, so top-floor flats and loft rooms often stay warm long after sunset.
Every Thamesmead quote starts with a room-by-room survey rather than a guess from floor area. Thamesmead lies roughly 11 miles from central London, and we cover it as part of London. We cover SE2 and SE28 and the streets around them.
Prices in Thamesmead
Our London guide price for heat load surveys and system design is £495–£1,645 for a standalone design pack, VAT included. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. The design pack price depends mainly on the number of rooms and whether full drawings and equipment schedules are needed. Typical Design pack work (drawings and schedules for one home) lands around £495–£1,045 in this area.
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
A survey in Thamesmead usually takes one to two hours. We measure the rooms, check the walls and the consumer unit, agree the outdoor unit position with you and photograph the pipe routes. We book surveys in Thamesmead at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
What a job in Thamesmead covers:
- Electrical load for your electrician
- Pipe and drain routes
- Written proposal with options
- Room-by-room heat gain and heat loss
- Noise check to the nearest neighbour
Nearby
Nearby, we also cover Barking (3 miles), Welling (3 miles) and Becontree (3 miles). See all services in Thamesmead or heat load surveys and system design across London.