Heat load surveys and system design in Blackheath
The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights. For self-builds and extensions in Blackheath, a standalone design pack can go straight to your builder.
Every Blackheath quote starts with a room-by-room survey rather than a guess from floor area. Blackheath lies roughly 6 miles from central London, and we cover it as part of London. That includes the SE3 postcode district.
Prices in Blackheath
Budget around £495–£1,645 for a standalone design pack including VAT for heat load surveys and system design in and around Blackheath. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. A standalone design pack is priced on the size of the home, the number of rooms and how much drawing work your builder or architect needs. 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
Surveys in Blackheath cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. On a survey in Blackheath the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows.
What is included
Included with heat load surveys and system design in Blackheath:
- Room-by-room heat gain and heat loss
- Noise check to the nearest neighbour
- Equipment selection and outdoor unit sizing
- Electrical load for your electrician
- Written proposal with options
Nearby
If you are just outside Blackheath, we also work in Greenwich (1 mile), Catford (2 miles) and Eltham (2 miles). See all services in Blackheath or heat load surveys and system design across London.

