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Get started12 Sir Briggs Avenue is a four-bedroom detached house in Duffryn, Newport, Newport (NP10 8AU). It has a recorded floor area of 113 m² (around 1216 sq ft), construction records dating it to 2012-2021 and council tax band E. The latest certificate (November 2025) shows a C (score 80), 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 84). This certificate was lodged in the last six months, so the rating reflects current condition.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. On the market in June 2015 and unlisted since — roughly 11 years. Today's modelled estimate of £359,000 is 49.6% above the 2015 sale price.
12 Sir Briggs Avenue sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
12 Sir Briggs Avenue valuation sits well clear of the typical sold price in this postcode.
£359,000
Modelled from EPC, postcode comparables.
£239,995
Recorded with HM Land Registry.
12 Sir Briggs Avenue is notably below the street on co₂ emissions.
Price per m²
£2,124
Street avg £2,363
Floor Area
113 m²
Street avg 101 m²
CO₂ Emissions
2.0 t/year
Street avg 1.6 t/year
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Steeplechase Road — bus stop.
Changes detected from historical EPC data
Floor insulation added or improved
Are we missing something? Tell us about home improvements to help adjust your valuation.
29 June 2015Most recent
£239,995
Median price across the last 5 sales in NP10 8AU: £300,000 (2025–2022).
Years Held
11 years
Street avg 8 years
NP10 8QF
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