8 Clos Derwen, Cardiff, CF23 5HJ
About 8 Clos Derwen
8 Clos Derwen is a detached house in Cardiff (CF23 5HJ). It has a recorded floor area of 159 m² (around 1711 sq ft), construction records dating it to 1996-2002 and council tax band G. The latest certificate (May 2023) shows a C (score 74). When first surveyed in April 2012 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Average to Good.
At 159 m² the property is well over the postcode median (107 m² across 22 EPCs), placing it in the larger end of the local stock. One planning record on file: an extension approved in 2018. Past consents include an extension, a garage conversion and a porch, meaningful when judging how the property has evolved. 8 years since the last transfer (January 2018). Across 1999–2018, sale prices on this property compounded at 5.8% per year. Today's modelled estimate of £598,000 is 32.9% above the 2018 sale price.
Everything you need to know about 8 Clos Derwen
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,085 · Includes VAT
Planning history
1 application on record at 8 Clos Derwen, Cardiff, CF23 5HJ
- Feb 2018Garage ConversionFullOutcome in report
Extension: Single storey · Rear of property
SINGLE STOREY REAR EXTENSION. CONVERSION OF EXISTING GARAGE TO HABITABLE SPACE WITH NEW PORCH ENTRANCE
ExtensionPorch- Documents
- 19 docs on file
- Reference
- 17/03033/DCH
Unlock 8 Clos Derwen, Cardiff, CF23 5HJ's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 1 notable nearby
- The 19 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Sale price has at least doubled since 1999.
£598,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.8% per year over 18 years.
£450,000
Growth on file: 5.8% per year over 18 years.
Sales timeline
3 January 2018Most recent
£450,000
+177.9%over 18 years19 November 1999
£161,950
Median price across the last 5 sales in CF23 5HJ: £425,000 (2025–2021).
Versus other Clos Derwen homes
On floor area, 8 Clos Derwen stands well clear of the street.
Price per m²
£2,830
Street avg £3,266
Floor Area
159 m²
Street avg 112 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.7 t/year
Street avg 3.6 t/year
Everything you need to know about 8 Clos Derwen
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
The data behind every report
Similar properties nearby
The neighbourhood at a glance
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
0.2 km
Brandreth Rd — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.