Heat load surveys and system design in Holloway
The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights. For self-builds and extensions in Holloway, a standalone design pack can go straight to your builder.
Every Holloway quote starts with a room-by-room survey rather than a guess from floor area. Holloway sits around 4 miles from central London, inside our London area. Postcode districts we cover here include N7.
Prices in Holloway
Budget around £495–£1,645 for a standalone design pack including VAT for heat load surveys and system design in and around Holloway. 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
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. A survey in Holloway 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.
What is included
Included with heat load surveys and system design in Holloway:
- Electrical load for your electrician
- Room-by-room heat gain and heat loss
- Written proposal with options
- Noise check to the nearest neighbour
- Pipe and drain routes
Nearby
We also cover Highbury (1 mile), Archway (1 mile) and Camden Town (1 mile). See all services in Holloway or heat load surveys and system design across London.