11 Brynderwen Close, Cardiff, CF23 6BR
About 11 Brynderwen Close
11 Brynderwen Close is a four-bedroom semi-detached house in Cardiff (CF23 6BR). It has a recorded floor area of 125 m² (around 1345 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (August 2025) shows a C (score 76), near the top of the C band. When first surveyed in May 2015 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good and lighting went from Average to Good; while window efficiency dropped from Average to Poor. The recommended improvements would push it to B (score 82).
Today's modelled estimate of £535,000 sits 52.9% above the 2016 sale of £350,000. On a £-per-square-foot basis, the last sale (£260/sq ft) was about 18.3% above the typical sold price in the postcode. Its energy rating outperforms most of the postcode (better than 70% of similar EPCs). Last sold in June 2016, so it's been off the market for around 10 years.
What this property has
Inside
- Bedrooms4
- Bathrooms1
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Roof insulation improved
More low energy lighting installed
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Planning history
11 Brynderwen Close has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
11 Brynderwen Close valuation sits well clear of the typical sold price in this postcode.
£535,000
Modelled from EPC, postcode comparables.
£350,000
Recorded with HM Land Registry.
Sales timeline
13 June 2016Most recent
£350,000
Median price across the last 5 sales in CF23 6BR: £505,000 (2025–2015).
Nearby sales in CF23 6BR
Versus other Brynderwen Close homes
11 Brynderwen Close outperforms the street on epc rating by a wide margin.
Price per m²
£2,800
Street avg £3,036
Floor Area
125 m²
Street avg 137 m²
Habitable Rooms
7 rooms
Street avg 6 rooms
CO₂ Emissions
2.8 t/year
Street avg 5.3 t/year
Similar properties nearby
1 Alderbrook, Cyncoed
CF23 6QD
1 Duffryn Avenue
CF23 6LE
1 Dan Y Coed Rise
CF23 6NN
1 Celyn Grove
CF23 6SH
1 Dan Yr Heol
CF23 6JU
1 Glenwood
CF23 6UR
1 Dan Y Coed Close
CF23 6NJ
1 Cefn Coed Avenue
CF23 6HE
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
0.1 km
Celyn Avenue — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







