4 Birds Close, Welwyn Garden City AL7 4AR

End-Terrace house · Built 1950-1966 · 75 m² · Boiler and radiators, mains gas

Upgrade Plan

DC for £2,858 · £2,858 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation£225typical£544.2 yrs+1.8 pts
Low energy lighting£20 – £45typical£56.6 yrs+0.2 pts
Band A condensing boiler£2,600typical£6937.5 yrs+2.4 pts · reaches C
Solar water heating(optional, beyond C)£5,000typical£8850+ yrs+3.0 pts
Solar photovoltaic panels(optional, beyond C)£4,500 – £9,000typical£10450+ yrs+3.6 pts

Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type. 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

£1,143
per year at grade D
£823
per year at grade C

The full plan saves £128 a year — a 4.5% annual return on £2,858.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2009, states £677 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

26 February 2020£360,000
6 January 2010£218,500
12 December 2006£215,000
19 October 1998£92,000

Estimated today: £420,208 HPI-indexed estimate, not a valuation

Birds Close: 54 sales since 1995 · £360,573 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Commonswood Primary & Nursery SchoolPrimary0.4 mi
Swallow Dell Primary and Nursery SchoolPrimary0.6 mi
Watchlytes Primary SchoolPrimary0.6 mi
Ridgeway AcademySecondary0.8 miProgress 8 -0.47 · below average (2023/24)
Stanborough SchoolSecondary1.9 miProgress 8 +0.18 · average (2023/24)
Monk's Walk SchoolSecondary2.6 miProgress 8 +0.24 · 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.

7.5
crimes a month
75
in the last 12 months
Violence and sexual offences
most common · 33% of the total

Police.uk street-level data for LSOA E01023943, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Birds Close

How this home sits against its street.

32
graded homes
67
average score
C
most common grade
-1.0
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.