Heat load surveys and system design in Banstead
In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon. For self-builds and extensions in Banstead, a standalone design pack can go straight to your builder.
No two rooms in Banstead gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing. Banstead lies roughly 15 miles from Woking, and we cover it as part of Surrey. Postcode districts we cover here include SM7.
Prices in Banstead
Our South East England guide price for heat load surveys and system design is £495–£1,495 for a standalone design pack, VAT included. Prices here sit above the national middle, reflecting South East England 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–£945 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 Banstead 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. The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote.
What is included
What a job in Banstead covers:
- Written proposal with options
- Room-by-room heat gain and heat loss
- Noise check to the nearest neighbour
- Pipe and drain routes
- Equipment selection and outdoor unit sizing
Nearby
Neighbouring places we cover include Sutton (2 miles), Ewell (3 miles) and Epsom (3 miles). See all services in Banstead or heat load surveys and system design across Surrey.