Heat load surveys and system design in Streatham
In London, heat soaks into brick and concrete during the day and comes back out at night, which is when it is hardest to sleep. No two rooms in Streatham gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing.
For self-builds and extensions in Streatham, a standalone design pack can go straight to your builder. Streatham lies roughly 5 miles from central London, and we cover it as part of London. Postcode districts we cover here include SW16.
Prices in Streatham
For Streatham, expect roughly £495 to £1,645 for a standalone design pack, VAT included, adjusted for typical London rates. London is one of the dearer parts of the UK for trades, which shows in the range. Larger homes, more zones and full drawing sets for a builder are what move a design pack towards the upper figure. As an example, the Design pack option (drawings and schedules for one home) would typically be £495–£1,045 here.
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
England's rules let most houses fit an outdoor unit without a planning application, as long as the size, number and MCS 020(a) noise conditions are met. Flats, listed buildings and roof-mounted units are treated differently.
The survey
We book surveys in Streatham at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. Surveys in Streatham 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 Streatham includes:
- Equipment selection and outdoor unit sizing
- Room-by-room heat gain and heat loss
- Pipe and drain routes
- Written proposal with options
- Electrical load for your electrician
Nearby
We also cover Mitcham (2 miles), Brixton (3 miles) and Wimbledon (3 miles). See all services in Streatham or heat load surveys and system design across London.

