23 Castle Street, Newport, NP20 2DF
About 23 Castle Street
23 Castle Street is an end-of-terrace house in Newport (NP20 2DF). It has a recorded floor area of 108 m² (around 1163 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (April 2025) shows a C (score 71). The rating has held steady at C across 2 certificates since January 2018. Between certificates, lighting went from Poor to Good. The recommended improvements would push it to B (score 84).
Untraded for 29 years, with the last transfer in March 1997. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £152,000 sits 590.9% above the 1997 sale of £22,000. On a £-per-square-foot basis, the last sale (£19/sq ft) was about 80.3% below the postcode norm. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs).
Everything you need to know about 23 Castle Street
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
23 Castle Street 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
23 Castle Street's modelled value sits at over four times its earliest registered sale price (1997).
£152,000
Modelled from EPC, postcode comparables.
£22,000
Recorded with HM Land Registry.
Sales timeline
27 March 1997Most recent
£22,000
Median price across the last 5 sales in NP20 2DF: £135,000 (2025–2019).
Nearby sales in NP20 2DF
Versus other Castle Street homes
Years Held for 23 Castle Street runs comfortably ahead of the street norm.
Price per m²
£204
Street avg £954
Floor Area
108 m²
Street avg 102 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
3.4 t/year
Street avg 5.0 t/year
Everything you need to know about 23 Castle Street
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
The data behind every report
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.