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20 Gwern Catherine, Capel Llanilltern, Cardiff, CF5 6GD

EPC B
Property type
Semi-detached
Floor area
99 m²
1066 sq ft
Energy rating
B
Score 84
Overview

About 20 Gwern Catherine

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

20 Gwern Catherine is a semi-detached house in Capel Llanilltern, Cardiff, Cardiff (CF5 6GD). It has a recorded floor area of 99 m² (around 1066 sq ft). The latest certificate (February 2021) returns a B (score 84), comfortably above the UK average. The recommended improvements would push it to A (score 94).

At 99 m² the property is well over the postcode median (59 m² across 45 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £334,000 is 17.2% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£267/sq ft) was about 17.1% below the postcode norm. Sold March 2021 for £284,995. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Before you decide

Everything you need to know about 20 Gwern Catherine

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

Larger development activity nearby

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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.

20 Gwern Catherine's carbon output is low for the local stock.

EPC Rating

A
B
B84
C
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Good
CO2 Emissions
1.5 t/year
Occupancy
—
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Semi-Detached HouseEPC B

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Planning

Planning history

Applications and permits filed against 20 Gwern Catherine, Capel Llanilltern, Cardiff, CF5 6GD, sourced from the PlanIt planning register.

20 Gwern Catherine has no planning applications on record.

1

But the area is active

1 notable application 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.

The latest sale landed in the post-pandemic price surge — useful context when reading the figure.

Current estimate

£334,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2021)

£284,995

Recorded with HM Land Registry.

Sales timeline

  1. 29 March 2021Most recent

    £284,995

Median price across the last 5 sales in CF5 6GD: £215,000 (2025–2024).

On the street

Versus other Gwern Catherine homes

Four headline reads against 45 similar houses on this street, drawn from the latest EPC and Land Registry data.

Price per m² for 20 Gwern Catherine lags the street by a wide margin.

Price per m²

£2,879

Street avg £3,450

Strongly below

Floor Area

99 m²

Street avg 69 m²

Strongly above

CO₂ Emissions

1.5 t/year

Street avg 1.1 t/year

Strongly below

Years Held

5 years

Street avg 4 years

Above
Before you decide

Everything you need to know about 20 Gwern Catherine

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

Larger development activity nearby

Pick your report · every report is £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.
£317k

1 Castle Green, St George S Super Ely

CF5 6EX

£296k

1 Clive Cottages, St Fagans

CF5 6EE

£294k

1 Coedlan Y Trenshys, St Fagans

CF5 6FS

£384k

1 Cardiff Road, St Fagans

CF5 6EB

2 bed
£285k

1 Cottage Row, Twyn Yr Odyn

CF5 6BN

2 bed2 bath
£412k

1 Burdons Close, Wenvoe

CF5 6FE

£419k

1 Clos Yr Onnen, Capel Llanilltern

CF5 6GP

£421k

1 Church Row, St Nicholas

CF5 6SP

3 bed
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

6/mo

Steady year-on-year across the wider district.

Nearest stop

0.2 km

Robin Hill — 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 Gwern Catherine, Capel Llanilltern, Cardiff, CF5 6GD. Each answer is also embedded as structured data for search engines.