3 Grass Warren, Tewin, Welwyn AL6 0JJ

Semi-Detached house · Built 1950-1966 · 78 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

This certificate lists no outstanding recommendations.

Running costs

£1,395
per year at grade D
£903
per year at grade A

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2022, states £838 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

26 July 2022£500,000

Estimated today: £539,196 HPI-indexed estimate, not a valuation

Grass Warren: 18 sales since 1995 · £600,833 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Tewin Cowper Church of England Voluntary Aided Primary SchoolPrimaryunder 0.1 mi
Springmead Primary SchoolPrimary1.0 mi
The Holy Family Catholic Primary SchoolPrimary1.1 mi
Ridgeway AcademySecondary1.3 miProgress 8 -0.47 · below average (2023/24)
Monk's Walk SchoolSecondary2.4 miProgress 8 +0.24 · above average (2023/24)
The Sele SchoolSecondary2.6 miProgress 8 -0.26 · 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.

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.

13.4
crimes a month
147
in the last 12 months
Anti-social behaviour
most common · 27% of the total

Police.uk street-level data for LSOA E01023486, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Grass Warren

How this home sits against its street.

29
graded homes
69.5
average score
D
most common grade
-9.5
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.