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Get started23 Cefn Adda Close is a semi-detached house in Newport (NP20 3DR). It has a recorded floor area of 70 m² (around 753 sq ft) and construction records dating it to 2012-2021. The latest certificate (February 2026) shows a C (score 78), near the top of the C band. Earlier certificates rated it B (June 2015); the latest reading is one band lower. Between certificates, wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average. The recommended improvements would push it to B (score 82). This certificate was lodged in the last six months, so the rating reflects current condition.
Sale prices here have outpaced Newport HPI: 4.1% per year against 0% for the wider region. Today's modelled estimate of £218,000 is 23.2% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£235/sq ft) was about 19.7% above the typical sold price in the postcode. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Sold May 2021 for £177,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
23 Cefn Adda Close sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£218,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.1% per year over 6 years.
£177,000
Growth on file: 4.1% per year over 6 years.
EPC Rating for 23 Cefn Adda Close lags the street by a wide margin.
Price per m²
£2,529
Street avg £2,276
Floor Area
70 m²
Street avg 81 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Cardiff Road Post Office — bus stop.
24 May 2021Most recent
£177,000
+26.4%over 5 years30 June 2015
£139,995
Median price across the last 5 sales in NP20 3DR: £185,000 (2025–2024).
CO₂ Emissions
1.5 t/year
Street avg 1.2 t/year
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