29 Castle Road, Mumbles, Swansea SA3 5TF

End-Terrace house · Built 1900-1929 · 81 m² · Owner-occupied · Boiler and radiators, mains gas

Upgrade Plan

DC for £3,900 · £3,900 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Flue gas heat recovery£900£919.9 yrs+6.4 pts
Heating controls£350 – £450£3411.7 yrs+2.4 pts
Band A condensing boiler£2,200 – £3,000£5845.1 yrs+4.1 pts · reaches C
Solar photovoltaic panels(optional, beyond C)£9,000 – £14,000£8750+ yrs+6.1 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

£1,338
per year at grade D
£1,068
per year at grade C

The full plan saves £183 a year — a 4.7% annual return on £3,900.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2014, states £892 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

28 November 2017£277,500
11 May 2015£247,000
2 November 2007£229,000
23 December 2003£148,000
13 September 2000£65,000

Estimated today: £422,932 HPI-indexed estimate, not a valuation

Castle Road: 97 sales since 1995 · £325,370 average over 10 years

Schools nearby

The DfE register covers England. Welsh schools are held in a separate Welsh Government register, which we have not ingested yet.

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.

4.9
crimes a month
34
in the last 12 months
Violence and sexual offences
most common · 38% of the total

Police.uk street-level data for LSOA W01000880, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Castle Road

How this home sits against its street.

39
graded homes
58.8
average score
D
most common grade
+0.2
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.