Heat load surveys and system design in Eltham
Every Eltham quote starts with a room-by-room survey rather than a guess from floor area. The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights.
For self-builds and extensions in Eltham, a standalone design pack can go straight to your builder. Eltham is about 8 miles from central London and falls within our London coverage. That includes the SE9 postcode district.
Prices in Eltham
Our London guide price for heat load surveys and system design is £495–£1,645 for a standalone design pack, VAT included. London is one of the dearer parts of the UK for trades, which shows in the range. 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
For most houses in Eltham, the outdoor unit is permitted development if it passes the MCS 020(a) noise check (37 dB(A) or less at the nearest neighbouring window) and stays within the size and number limits. We run that check on survey.
The survey
A survey in Eltham 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. 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.
What is included
Included with heat load surveys and system design in Eltham:
- Electrical load for your electrician
- Pipe and drain routes
- Room-by-room heat gain and heat loss
- Equipment selection and outdoor unit sizing
- Written proposal with options
Nearby
Neighbouring places we cover include Blackheath (2 miles), Welling (3 miles) and Catford (3 miles). See all services in Eltham or heat load surveys and system design across London.

