Heat load surveys and system design in Egham
For self-builds and extensions in Egham, a standalone design pack can go straight to your builder. The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first.
Every Egham quote starts with a room-by-room survey rather than a guess from floor area. Egham sits around 8 miles from Woking, inside our Surrey area. That includes the TW20 postcode district.
Prices in Egham
Budget around £495–£1,495 for a standalone design pack including VAT for heat load surveys and system design in and around Egham. South East England 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. 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
In England, most houses can have an outdoor unit under permitted development if it is no larger than 1.5 m³, meets the MCS 020(a) noise limit of 37 dB(A) at the nearest neighbour's window, and there are no more than two on a detached house or one on other houses. Listed buildings need consent.
The survey
On a survey in Egham 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. A survey in Egham 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 as standard in Egham:
- Electrical load for your electrician
- Written proposal with options
- Equipment selection and outdoor unit sizing
- Pipe and drain routes
- Noise check to the nearest neighbour
Nearby
Nearby, we also cover Staines (2 miles), Ashford, Surrey (4 miles) and Windsor (4 miles). See all services in Egham or heat load surveys and system design across Surrey.

