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20 Clos Cwm Du, Pontprennau, Cardiff, CF23 8LE

3 sales on record
Property type
Detached
Bedrooms
4
Bathrooms
2
Floor area
156 m²
1679 sq ft
Energy rating
D
Score 68
Council tax
Band F
Tenure
Owner Occupied
Overview

About 20 Clos Cwm Du

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

20 Clos Cwm Du is a four-bedroom detached house in Pontprennau, Cardiff, Cardiff (CF23 8LE). It has a recorded floor area of 156 m² (around 1679 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (December 2022) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it C (January 2009); the latest reading is one band lower. Between certificates, lighting went from Poor to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good. The recommended improvements would lift it to B (score 81), a 2-band jump.

At 156 m² the property is well over the postcode median (93 m² across 17 EPCs), placing it in the larger end of the local stock. Across 1998–2022, sale prices on this property compounded at 6.1% per year. On a £-per-square-foot basis, the last sale (£301/sq ft) was about 61% above the typical sold price in the postcode. Most recent transfer: October 2022 at £505,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms4
  • Bathrooms2
Before you decide

Everything you need to know about 20 Clos Cwm Du

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

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 3)
Dec 2022

EPC Rating

A
B
C
D
D68
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
5.2 t/year
Occupancy
Owner Occupied

Property Improvements

Changes detected from historical EPC data

Dec 2014from Jan 2009
EPC improved fromC69toE49
Hot Water
Very GoodAverage

Hot water efficiency decreased

Roof Insulation
InsulatedWell Insulated

Loft insulation upgraded to recommended levels

Dec 2022from Dec 2014
EPC improved fromE49toD68
Hot Water
AverageGood

Hot water efficiency improved

Wall Insulation
UninsulatedInsulated Cavity

Cavity wall insulation installed

Floor Insulation
UninsulatedPartial

Floor insulation added or improved

Low Energy Lighting
29%100%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Late 20th centuryDetached 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 £795 · Includes VAT

Planning

Planning history

Applications and permits filed against 20 Clos Cwm Du, Pontprennau, Cardiff, CF23 8LE, sourced from the PlanIt planning register.

20 Clos Cwm Du 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.

Latest sale on 20 Clos Cwm Du was the highest on Land Registry record across the postcode.

Current estimate

£502,000

Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 25 years.

See how we calculated this
Last sold (2022)

£505,000

Growth on file: 6.1% per year over 25 years.

Sales timeline

  1. 27 October 2022Most recent

    £505,000

    +50.7%over 3 years

  2. 9 November 2018

    £335,000

    +183.9%over 20 years

  3. 6 February 1998

    £118,000

Median price across the last 5 sales in CF23 8LE: £315,000 (2023–2016).

On the street

Versus other Clos Cwm Du homes

Four headline reads against 17 similar houses on this street, drawn from the latest EPC and Land Registry data.

Floor Area for 20 Clos Cwm Du runs comfortably ahead of the street norm.

Price per m²

£3,237

Street avg £2,538

Strongly above

Floor Area

156 m²

Street avg 94 m²

Strongly above

Habitable Rooms

8 rooms

Street avg 6 rooms

Strongly above

CO₂ Emissions

5.2 t/year

Street avg 3.7 t/year

Strongly below
Before you decide

Everything you need to know about 20 Clos Cwm Du

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

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.
£468k

1 Acorn Grove, Pontprennau

CF23 8NG

4 bed2 bath
£434k

1 Clos Nant Y Cwm, Pontprennau

CF23 8LG

4 bed2 bath
£426k

1 Allt Y Wennol, Pontprennau

CF23 8AS

4 bed2 bath
£394k

1 Clos Nant Mwlan, Pontprennau

CF23 8NA

4 bed2 bath
£353k

1 Blackberry Way, Pontprennau

CF23 8FE

4 bed2 bath
£339k

1 Clos Alyn, Pontprennau

CF23 8LB

3 bed
£334k

1 Clos Dol Heulog, Pontprennau

CF23 8AT

3 bed
£324k

1 Amberwood Close, Pontprennau

CF23 8BZ

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

Reported crime in the wider district is trending notably upward year-on-year.

Crime

9/mo

Rising year-on-year across the wider district.

Nearest stop

0.1 km

Clos Cwm Du — 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 Clos Cwm Du, Pontprennau, Cardiff, CF23 8LE. Each answer is also embedded as structured data for search engines.