21 Knowl Street, Oldham OL8 3RG

Mid-Terrace house · Built before 1900 · 100 m² · Owner-Occupied · Boiler and radiators, mains gas, Room heaters, coal

Upgrade Plan

FD for £13,555 · £6,778 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Floor insulation£800 – £1,200£2104.8 yrs+6.9 pts
Low energy lighting£55£96.0 yrs+0.3 pts · reaches E
Cavity wall insulation£500 – £1,500£1576.4 yrs+5.1 pts
Solar water heating£4,000 – £6,000£16330.6 yrs+5.3 pts
Solar photovoltaic panels£5,000 – £8,000£19533.4 yrs+6.4 pts · reaches D

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

£2,908
per year at grade F
£2,173
per year at grade D

The full plan saves £735 a year — a 5.4% annual return on £13,555.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2015, states £2,020 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

29 August 2025£160,000
21 April 2011£88,000
5 April 2006£72,500

Estimated today: £165,619 HPI-indexed estimate, not a valuation

Knowl Street: 66 sales since 1995 · £140,114 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
St Margaret's CofE Junior Infant and Nursery SchoolPrimary0.2 mi
Oasis Academy LimesidePrimary0.4 mi
Holy Family RC Primary SchoolPrimary0.6 mi
Oasis Academy OldhamSecondary0.2 miProgress 8 -0.39 · below average (2023/24)
Co-op Academy FailsworthSecondary0.9 miProgress 8 -0.30 · below average (2023/24)
The Hathershaw CollegeSecondary1.0 miProgress 8 -0.23 · below 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.

Knowl Street

How this home sits against its street.

42
graded homes
61
average score
D
most common grade
-29.0
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.