77 Green Drift, Royston SG8 5BX

Detached house · Built 1991-1995 · 92 m² · Owner-occupied · Boiler and radiators, mains gas

Upgrade Plan

DB for £20,780 · £10,390 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation£100 – £350£713.2 yrs+2.9 pts
Floor insulation£800 – £1,200£1506.7 yrs+6.2 pts
Heating controls£350 – £450£547.3 yrs+2.3 pts
Low energy lighting£55£78.4 yrs+0.3 pts
Band A condensing boiler£2,200 – £3,000£9228.3 yrs+3.8 pts · reaches C
Solar water heating£4,000 – £6,000£11643.1 yrs+4.8 pts
Solar photovoltaic panels£9,000 – £14,000£13850+ yrs+5.7 pts · reaches B

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

£1,626
per year at grade D
£998
per year at grade B

The full plan saves £628 a year — a 3.0% annual return on £20,780.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2014, states £1,127 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

30 April 2024£500,000
9 January 2015£335,000
18 August 1998£134,000
30 June 1998£125,000

Estimated today: £547,083 HPI-indexed estimate, not a valuation

Green Drift: 144 sales since 1995 · £513,263 average over 10 years

Schools nearby

The schools’ own performance — Progress 8 shows value added, not just raw results.

SchoolPhaseDistanceProgress
Tannery Drift SchoolPrimary0.1 mi
St Mary Roman Catholic Primary SchoolPrimary0.6 mi
Roman Way AcademyPrimary0.6 mi
Bassingbourn Village CollegeSecondary2.1 miProgress 8 -0.15 · average (2023/24)
Melbourn Village CollegeSecondary3.3 miProgress 8 -0.48 · below average (2023/24)
Freman CollegeSecondary6.9 miProgress 8 +0.58 · 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.

Area context

Police-recorded crime for the wider neighbourhood, not this address. We grade homes, never neighbourhoods — so this is reported as a count, not a rating.

15.9
crimes a month
175
in the last 12 months
Violence and sexual offences
most common · 27% of the total

Police.uk street-level data for LSOA E01023655, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Green Drift

How this home sits against its street.

66
graded homes
64.7
average score
D
most common grade
-8.7
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.