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Get started20 Tan Y Bwlch is a three-bedroom semi-detached house in Mynydd Llandygai, Bangor, Bangor (LL57 4DX). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (July 2016) shows an E (score 50), well below the UK norm with real room to improve. Earlier certificates rated it D (December 2013); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor; while roof efficiency dropped from Good to Very Poor and lighting dropped from Very Good to Good. The recommended improvements would lift it to B (score 89), a 3-band jump. Main heating runs on oil.
Sale prices here have outpaced England HPI: 1.2% per year against 0% for the wider region. Today's modelled estimate of £324,000 is 27.1% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£300/sq ft) was about 87% above the typical sold price in the postcode. At 79 m² it sits well below the postcode median (117 m² across 17 EPCs), making it one of the more compact homes locally. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Most recent transfer: December 2019 at £255,000.
Recommended upgrades on file would lift this property by multiple EPC bands.
20 Tan Y Bwlch has an approved single-storey rear extension on the planning record.
Cais am ddiwygiad ansylweddol i'r cynlluniau a ganiatawyd trwy ganiatâd cynllunio C19/1208/16/DT i godi estyniad unllawr to fflat y tu cefn i dy annedd, i gynyddu hyd yr estyniad i'r cefn 1000mm a newidiadau i'r ffenestri a'r drysau. Application for a non-material amendment to the plans approved by planning permission C19/1208/16/DT, for the e rection of a single storey flat roofed extension to rear of dwelling, to increase the length of the e xtension to the rear by 1000mm and alterations to the windows and doors.
20 Tan Y Bwlch's sale-price growth has lagged the wider UK trajectory across its history on file.
£324,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.2% per year over 13 years.
£255,000
Growth on file: 1.2% per year over 13 years.
Floor Area for 20 Tan Y Bwlch lags the street by a wide margin.
Price per m²
£3,228
Street avg £2,076
Floor Area
79 m²
Street avg 118 m²
Habitable Rooms
5 rooms
Reported crime in the wider district is trending notably upward year-on-year.
Crime
3/mo
Rising year-on-year across the wider district.
Nearest stop
0.3 km
Mynydd Llandygai — bus stop.
Changes detected from historical EPC data
Wall insulation improved
Low energy lighting percentage decreased
Are we missing something? Tell us about home improvements to help adjust your valuation.
Extension: Single storey · Rear of property
Codi estyniad unllawr to fflat yng nghefn yr eiddo / Erection of a single storey flat roofed extension to rear of dwelling
6 December 2019Most recent
£255,000
+15.9%over 12 years19 January 2007
£220,005
Median price across the last 5 sales in LL57 4DX: £310,000 (2025–2020).
Street avg 6 rooms
CO₂ Emissions
5.0 t/year
Street avg 7.2 t/year
LL57 4LS
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