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

EPC B

Estimated value

£230,000

  • Since the 2021 sale (£181,995)+26%
  • Against CF5 6GD's recent median (£240,000)-4%

Newest record on this page: April 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
End terrace
Floor area
51 m²
549 sq ft
Energy rating
B
Score 82
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£230,000

  • Against its 2021 sale (£181,995)+26%
  • Against CF5 6GD's recent median (£240,000)-4%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 17 Gwern Catherine is modelled from its 51 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF5 6GD. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    51 m² from the EPC lodged in October 2020

  • Sales of this home

    1 sale recorded, the latest in 2021

  • Recent sales in CF5 6GD

    5 sales, median £240,000 (2026–2025)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: April 2026Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

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

Sales timeline

  1. 26 February 2021Most recent

    £181,995

Median price across the last 5 sales in CF5 6GD: £240,000 (2026–2025).

Risks

What this page doesn't show

1 potential issue has already been flagged for 17 Gwern Catherine, Capel Llanilltern, Cardiff, CF5 6GD. The detail, evidence and what to ask about it are in the Risks Report.
  • Larger development activity nearbyIn report
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

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Overview

About 17 Gwern Catherine

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

17 Gwern Catherine is an end-of-terrace house in Capel Llanilltern, Cardiff, Cardiff (CF5 6GD). It has a recorded floor area of 51 m² (around 549 sq ft). The latest certificate (October 2020) returns a B (score 82), comfortably above the UK average. The recommended improvements would push it to A (score 97).

Today's modelled estimate of £230,000 is 26.4% above the 2021 sale price. Sold February 2021 for £181,995. 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 17 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.

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

Current Certificate
Oct 2020

EPC Rating

A
B
B82
C
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Good
CO2 Emissions
0.9 t/year
Occupancy
—

Certificate validity

Valid until 21 October 2030

3 years remaining
Planning

Planning history

Applications and permits filed against 17 Gwern Catherine, Capel Llanilltern, Cardiff, CF5 6GD, sourced from the PlanIt planning register.

17 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.

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.

17 Gwern Catherine outperforms the street on years held by a wide margin.

Price per m²

£3,569

Street avg £3,503

On par

Floor Area

51 m²

Street avg 71 m²

Below

CO₂ Emissions

0.9 t/year

Street avg 1.1 t/year

Above

Years Held

5 years

Street avg 4 years

Strongly above
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

426/mo

Steady year-on-year across the wider district.

Nearest stop

0.2 km

Robin Hill — bus stop.

Nearest stops

  • Robin HillBus stop226m
  • Robin HillBus stop257m
  • Heol St y NyllBus stop564m
  • Queen Charlotte DriveBus stop657m

Most reported crime locally

  • Violence & Sexual Offences2,365 reports35%
  • Anti-social Behaviour878 reports13%
  • Public Order758 reports11%
  • Shoplifting679 reports10%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

End-Terrace HouseEPC B

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.

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Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£230k

1 Chestnut Cottages, Croft Y Genau Road, St Fagans

CF5 6EG

2 bed1 bath
£220k

1 Castle Hill, St Fagans

CF5 6EJ

£219k

1 Cilffordd Y Coed, Capel Llanilltern

CF5 6GN

£280k

1 Coedlan Y Trenshys, St Fagans

CF5 6FS

£288k

1 Cottage Row, Twyn Yr Odyn

CF5 6BN

2 bed2 bath
£292k

1 Clive Cottages, St Fagans

CF5 6EE

£316k

1 Castle Green, St George S Super Ely

CF5 6EX

£351k

1 Cardiff Road, St Fagans

CF5 6EB

2 bed

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 17 Gwern Catherine is modelled from its 51 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF5 6GD. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 1 sale is recorded for 17 Gwern Catherine. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 17 Gwern Catherine was lodged in October 2020 at band B and is valid until October 2030. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 17 Gwern Catherine. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 16 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from CF5 6GD.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 17 Gwern Catherine, Capel Llanilltern, Cardiff, CF5 6GD. Each answer is also embedded as structured data for search engines.

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