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Get started18 Tyddyn Isaf is a two-bedroom semi-detached house in Menai Bridge (LL59 5DA). It has a recorded floor area of 55 m² (around 592 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (June 2025) shows an E (score 50), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since June 2009. Between certificates, roof efficiency went from Average to Good, lighting went from Average to Very Good and main heating went from Poor to Average. The recommended improvements would lift it to B (score 87), a 3-band jump. Main heating runs on electricity.
Sale prices here have outpaced England HPI: 1.7% per year against 0.1% for the wider region. Today's modelled estimate of £215,000 is 19.4% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£304/sq ft) was about 48.2% above the typical sold price in the postcode. A recent sale: £180,000 in July 2025. It lags the bulk of the postcode on energy efficiency (less efficient than 88% of similar EPCs).
Recommended upgrades on file would lift this property by multiple EPC bands.
18 Tyddyn Isaf valuation sits well clear of the typical sold price in this postcode.
£215,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.7% per year over 15 years.
£180,000
Growth on file: 1.7% per year over 15 years.
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Detailed AI analysis
18 Tyddyn Isaf is notably below the street on years held.
Price per m²
£3,273
Street avg £2,428
Floor Area
55 m²
Street avg 69 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Trem Eryri Circle — bus stop.
Changes detected from historical EPC data
Roof insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
1 July 2025Most recent
£180,000
+30.4%over 15 years8 January 2010
£138,000
Median price across the last 5 sales in LL59 5DA: £215,000 (2025–2023).
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CO₂ Emissions
4.8 t/year
Street avg 3.3 t/year
LL59 5HW