New-builds from 2025 onwards routinely ship with PV pre-fitted. If yours did not, retrofit is straightforward — and cheaper than most owners expect.
A new-build detached typically suits a 5–7 kWp install at £8,400–£12,200 fitted in 2026. Developer-fit PV is typically priced at a premium per kWp compared with a standalone retrofit. From the 2025 Future Homes Standard, most English new-builds ship with PV by default.