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20 Roundwood Close, Penylan, Cardiff, CF23 9HH

Property type
Semi-detached
Habitable rooms
6
From EPC
Floor area
88 m²
947 sq ft
Energy rating
D
Score 64
Council tax
Band E
Tenure
Owner Occupied
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Overview

About 20 Roundwood Close

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

20 Roundwood Close is a semi-detached house in Penylan, Cardiff, Cardiff (CF23 9HH). It has a recorded floor area of 88 m² (around 947 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (June 2023) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 83), a 2-band jump.

Today's modelled estimate of £318,000 is 15.6% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£290/sq ft) was about 30.3% above the typical sold price in the postcode. Last sale on file: £275,000 in January 2025.

Before you decide

Everything you need to know about 20 Roundwood Close

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

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
Jun 2023

EPC Rating

A
B
C
D
D64
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
3.7 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 13 June 2033

6 years remaining
SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Mid 20th centurySemi-Detached HouseEPC D

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

From £595 · Includes VAT

Planning

Planning history

Applications and permits filed against 20 Roundwood Close, Penylan, Cardiff, CF23 9HH, sourced from the PlanIt planning register.

20 Roundwood Close has no planning applications on record.

2

But the area is active

2 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.

20 Roundwood Close valuation sits well clear of the typical sold price in this postcode.

Current estimate

£318,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2025)

£275,000

Recorded with HM Land Registry.

Sales timeline

  1. 17 January 2025Most recent

    £275,000

Median price across the last 5 sales in CF23 9HH: £290,000 (2025–2020).

On the street

Versus other Roundwood Close homes

Four headline reads against 14 similar houses on this street, drawn from the latest EPC and Land Registry data.

20 Roundwood Close is notably below the street on years held.

Price per m²

£3,125

Street avg £2,611

Above

Floor Area

88 m²

Street avg 92 m²

On par

Habitable Rooms

6 rooms

Street avg 6 rooms

Above

CO₂ Emissions

3.7 t/year

Street avg 3.4 t/year

Below
Before you decide

Everything you need to know about 20 Roundwood Close

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

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.
£311k

1 Ffordd Nowell, Penylan

CF23 9FA

£337k

1 Kingwood Close, Penylan

CF23 9HE

3 bed1 bath
£339k

1 Doe Close, Penylan

CF23 9HJ

£350k

1 Firstbrook Close

CF23 9ER

3 bed2 bath
£360k

1 Baber Close

CF23 9BX

£280k

1 Grafton Close, Penylan

CF23 9JA

£264k

1 Howardian Close, Penylan

CF23 9AG

£249k

1 Eastside Quarter, Maelfa, Llanedeyrn

CF23 9PN

Area

The neighbourhood at a glance

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

Crime

169/mo

Falling year-on-year across the wider district.

Nearest stop

0.1 km

Llanedeyrn Road — 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 20 Roundwood Close, Penylan, Cardiff, CF23 9HH. Each answer is also embedded as structured data for search engines.