| Measure | Grant | Net cost | Saving / yr | Payback | Grade effect |
|---|---|---|---|---|---|
| Hot water cylinder insulation | — | £15 – £400 | £146 | 1.4 yrs | +5.2 pts |
| Low energy lighting | — | £25 | £7 | 3.4 yrs | +0.3 pts |
| Heating controls | — | £350 – £450 | £62 | 6.4 yrs | +2.2 pts |
| Cavity wall insulation | — | £500 – £1,500 | £127 | 7.9 yrs | +4.5 pts · reaches D |
| Room-in-roof insulation | — | £1,500 – £2,700 | £235 | 8.9 yrs | +8.4 pts |
| Double glazing | — | £1,000 – £1,400 | £62 | 19.4 yrs | +2.2 pts |
| Floor insulation | — | £800 – £6,000 | £170 | 19.9 yrs | +6.1 pts · reaches C |
| Band A condensing boiler | — | £2,200 – £3,000 | £105 | 24.8 yrs | +3.7 pts |
| Solar photovoltaic panels | — | £3,500 – £5,500 | £158 | 28.5 yrs | +5.6 pts · reaches B |
| Solar water heating(optional, beyond B) | — | £4,000 – £6,000 | £132 | 37.8 yrs | +4.7 pts |
Grants verified 20 August 2026. Costs are the register’s indicative ranges. Savings are restated at the fuel prices assumed in July 2026. Points per measure are estimated from 19.9 million certificates and rescaled to this home’s own certificate delta; the total is the register’s figure.
Running costs
The full plan saves £1,073 a year — a 7.0% annual return on £15,433.
Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2021, states £1,250 a year at the prices assumed then. Modelled costs, not a bill.
Sold prices
Estimated today: £318,606 HPI-indexed estimate, not a valuation
Lammas Way: 51 sales since 1995 · £283,733 average over 10 years
Schools nearby
The schools’ own performance — Progress 8 shows value added, not just raw results.
| School | Phase | Distance | Progress |
|---|---|---|---|
| Broomgrove Infant School | Primary | 0.3 mi | — |
| Broomgrove Junior School | Primary | 0.3 mi | — |
| Millfields Primary School | Primary | 0.6 mi | — |
| Colchester Academy | Secondary | 2.1 mi | Progress 8 -0.91 · well below average (2023/24) |
| The Thomas Lord Audley School | Secondary | 2.6 mi | Progress 8 -0.13 · average (2023/24) |
| Colchester Royal Grammar School | Secondary | 3.5 mi | Progress 8 +1.09 · well above average (2023/24) |
Schools from the DfE register, performance from the KS4 performance tables. Progress 8 is a GCSE measure, so primaries have none. Distance is straight-line from the postcode, not a catchment: admission is decided by the school, not by us.
Lammas Way
How this home sits against its street.