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21 Castle Street, Newport, NP20 2DF

Property type
Mid terrace
Habitable rooms
6
From EPC
Floor area
115 m²
1238 sq ft
Energy rating
D
Score 67
Council tax
Band B
Tenure
Private Rental
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Overview

About 21 Castle Street

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

21 Castle Street is a mid-terrace house in Newport (NP20 2DF). It has a recorded floor area of 115 m² (around 1238 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (May 2026) shows a D (score 67), on the cusp of jumping into the C band. When first surveyed in September 2013 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Average, hot-water efficiency went from Average to Good and lighting went from Good to Very Good; while window efficiency dropped from Average to Poor. The recommended improvements would lift it to B (score 81), a 2-band jump. This certificate was lodged in the last six months, so the rating reflects current condition.

Today's modelled estimate of £169,000 is 40.8% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£97/sq ft) was about 22% above the typical sold price in the postcode. Most recent transfer: May 2024 at £120,000.

Before you decide

Everything you need to know about 21 Castle Street

The true value, the hidden risks and the full sale history, in one report.

Signs of HMO activity in the area

Pick your report · from £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

Recommended upgrades on file would lift this property by multiple EPC bands.

Current Certificate(1 of 4)
May 2026

EPC Rating

A
B
C
D
D67
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Poor
CO2 Emissions
4.1 t/year
Occupancy
Rented

Certificate validity

Valid until 8 May 2036

9 years remaining

Property Improvements

Changes detected from historical EPC data

Jun 2014from Sept 2013
Heating Controls
FullProg + Stat

Heating controls changed

Hot Water
Main (No Stat)Main System

Hot water system upgraded

Dec 2014from Jun 2014
Heating Controls
Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water
AverageGood

Hot water efficiency improved

May 2026from Dec 2014
EPC improved fromE53toD67
Roof Insulation
UninsulatedWell Insulated

Loft insulation installed or upgraded to 250mm+

Low Energy Lighting
50%100%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 3 Building Survey

Victorian-eraMid-Terrace HouseEPC DPre-1919 build

Because the property was built before 1919, we believe a Level 3 building survey should be considered.

From £820 · Includes VAT

Planning

Planning history

Applications and permits filed against 21 Castle Street, Newport, NP20 2DF, sourced from the PlanIt planning register.

21 Castle Street has no planning applications on record.

6

But the area is active

6 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

21 Castle Street's sale-price growth has lagged the wider UK trajectory across its history on file.

Current estimate

£169,000

Modelled from EPC, postcode comparables and a sale-price growth of -0.1% per year over 17 years.

See how we calculated this
Last sold (2024)

£120,000

Growth on file: -0.1% per year over 17 years.

Sales timeline

  1. 2 May 2024Most recent

    £120,000

    -1.6%over 17 years

  2. 24 November 2006

    £122,000

Median price across the last 5 sales in NP20 2DF: £135,000 (2025–2018).

On the street

Versus other Castle Street homes

Four headline reads against 19 similar houses on this street, drawn from the latest EPC and Land Registry data.

21 Castle Street is notably below the street on years held.

Price per m²

£1,043

Street avg £885

On par

Floor Area

115 m²

Street avg 101 m²

Above

Habitable Rooms

6 rooms

Street avg 5 rooms

Strongly above

CO₂ Emissions

4.1 t/year

Street avg 4.9 t/year

On par
Before you decide

Everything you need to know about 21 Castle Street

The true value, the hidden risks and the full sale history, in one report.

Signs of HMO activity in the area

Pick your report · from £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£170k

1 Bowen Place

NP20 2RG

3 bed1 bath
£171k

1 Cape Lindsey Road

NP20 2SD

£173k

1 Carlisle Street

NP20 2JD

£163k

1 Ariel Walk

NP20 2GF

£159k

1 Castle Street

NP20 2DF

£158k

1 Capel Close

NP20 2RT

£157k

1 Alma Close

NP20 2RD

£157k

1 Ariel Reach

NP20 2FP

Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Newport district page.
Full Newport report

Crime

321/mo

Falling 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.

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 21 Castle Street, Newport, NP20 2DF. Each answer is also embedded as structured data for search engines.