11 Roundwood Close, Penylan, Cardiff, CF23 9HH
About 11 Roundwood Close
11 Roundwood Close is a semi-detached house in Penylan, Cardiff, Cardiff (CF23 9HH). It has a recorded floor area of 102 m² (around 1098 sq ft), construction records dating it to 1976-1982 and council tax band F. The latest certificate (July 2025) shows a C (score 74). When first surveyed in March 2013 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Average to Good; while roof efficiency dropped from Good to Average.
At 102 m² it's 18.6% larger than the typical home in the postcode (86 m² median across 14 EPCs).
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
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 £955 · Includes VAT
Planning history
11 Roundwood Close has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
11 Roundwood Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£325,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in CF23 9HH: £290,000 (2025–2020).
Nearby sales in CF23 9HH
20 Roundwood Close, Penylan, Cardiff, CF23 9HH
Sold Jan 2025
£275,0006 Roundwood Close, Penylan, Cardiff, CF23 9HH
Sold Dec 2022
£320,0003 Roundwood Close, Penylan, Cardiff, CF23 9HH
Sold Mar 2022
£290,00019 Roundwood Close, Penylan, Cardiff, CF23 9HH
Sold Jun 2021
£295,0001 Roundwood Close, Penylan, Cardiff, CF23 9HH
Sold Dec 2020
£285,000
Versus other Roundwood Close homes
On epc rating, 11 Roundwood Close stands well clear of the street.
EPC Rating
74 (C)
Street avg 66 (D)
Floor Area
102 m²
Street avg 91 m²
CO₂ Emissions
2.6 t/year
Street avg 3.5 t/year
Habitable Rooms
7 rooms
Street avg 5 rooms
Similar properties nearby
1 Kingwood Close, Penylan
CF23 9HE
1 Doe Close, Penylan
CF23 9HJ
1 Firstbrook Close
CF23 9ER
1 Ffordd Nowell, Penylan
CF23 9FA
1 Baber Close
CF23 9BX
1 Grafton Close, Penylan
CF23 9JA
1 Howardian Close, Penylan
CF23 9AG
1 Hugon Close
CF23 9BY
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
Llanedeyrn Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







