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Get started21 Cefn Adda Close is a three-bedroom semi-detached house in Newport (NP20 3DR). It has a recorded floor area of 69 m² (around 743 sq ft), construction records dating it to 2012-2021 and council tax band C. The latest certificate (December 2025) shows a C (score 78), near the top of the C band. Earlier certificates rated it B (March 2015); the latest reading is one band lower. Between certificates, wall efficiency dropped from Very Good to Good and roof 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. The home occupies a corner plot.
Sale prices here have outpaced Newport HPI: 2.6% per year against 0% for the wider region. Today's modelled estimate of £227,000 is 41.9% above the 2018 sale price. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 8 years since the last transfer (April 2018).
21 Cefn Adda Close sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
21 Cefn Adda Close valuation sits well clear of the typical sold price in this postcode.
£227,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.6% per year over 3 years.
£160,000
Growth on file: 2.6% per year over 3 years.
21 Cefn Adda Close is notably below the street on epc rating.
Price per m²
£2,319
Street avg £2,280
Floor Area
69 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.
12 April 2018Most recent
£160,000
+8.1%over 3 years31 March 2015
£147,995
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
NP20 3GE
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