1b, Castle Street, Newport, NP20 2DF
About 1b
1b is a mid-terrace house in Newport (NP20 2DF). It has a recorded floor area of 104 m² (around 1119 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (May 2018) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2013); the latest reading is one band lower. Between certificates, wall efficiency dropped from Poor to Very Poor and roof efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 86), a 2-band jump.
Across 1996–2019, sale prices on this property compounded at 8.9% per year. Today's modelled estimate of £185,000 is 37% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£121/sq ft) was about 25.5% above the typical sold price in the postcode. Most recent transfer: April 2019 at £135,000.
Everything you need to know about 1b
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
1b has no planning applications on record.
But the area is active
7 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
1b has more than quadrupled in price since its earliest registered sale in 1996.
£185,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.9% per year over 22 years.
£135,000
Growth on file: 8.9% per year over 22 years.
Sales timeline
4 April 2019Most recent
£135,000
+82.4%over 7 months21 August 2018
£74,000
+270.0%over 21 years16 December 1996
£20,000
Median price across the last 5 sales in NP20 2DF: £120,000 (2025–2016).
Nearby sales in NP20 2DF
Versus other Castle Street homes
1b outperforms the street on price per m² by a wide margin.
Price per m²
£1,298
Street avg £863
Floor Area
104 m²
Street avg 102 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.7 t/year
Street avg 5.0 t/year
Everything you need to know about 1b
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee

Similar properties nearby
The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Library — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.






