11 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU
About 11 Cwm Gwynlais
11 Cwm Gwynlais is a two-bedroom detached house in Tongwynlais, Cardiff, Cardiff (CF15 7HU). It has a recorded floor area of 74 m² (around 797 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (September 2018) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in November 2014 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good and hot-water efficiency went from Poor to Good; while window efficiency dropped from Average to Poor. The recommended improvements would lift it to B (score 85), a 2-band jump. The home occupies a cul-de-sac position.
At 74 m² it sits well below the postcode median (108 m² across 12 EPCs), making it one of the more compact homes locally. Across 2000–2019, sale prices on this property compounded at 3.6% per year. Today's modelled estimate of £321,000 is 42.7% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£282/sq ft) was about 69.5% above the typical sold price in the postcode. Last sale on file: £225,000 in August 2019.
What this property has
Inside
- Bedrooms2
- Bathrooms2
- CloakroomYes
Outside
- Private gardenRear
- GarageDetached
- Cul-de-sacYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 8 September 2028
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Roof insulation improved
Get a survey for this property
Level 2 HomeBuyer Report
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 £595 · Includes VAT
Planning history
11 Cwm Gwynlais 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 Cwm Gwynlais valuation sits well clear of the typical sold price in this postcode.
£321,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.6% per year over 19 years.
£225,000
Growth on file: 3.6% per year over 19 years.
Sales timeline
29 August 2019Most recent
£225,000
+94.0%over 18 years15 December 2000
£116,000
Median price across the last 5 sales in CF15 7HU: £300,000 (2022–2016).
Nearby sales in CF15 7HU
24 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU
Sold Dec 2022
£302,00017 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU
Sold Jun 2021
£365,0006 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU
Sold Jun 2019
£128,30427 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU
Sold Feb 2017
£300,00010 Cwm Gwynlais, Tongwynlais, Cardiff, CF15 7HU
Sold Apr 2014
£247,500
Versus other Cwm Gwynlais homes
On floor area, 11 Cwm Gwynlais runs well behind the street norm.
Price per m²
£3,041
Street avg £1,988
Floor Area
74 m²
Street avg 106 m²
Habitable Rooms
4 rooms
Street avg 6 rooms
CO₂ Emissions
3.3 t/year
Street avg 4.3 t/year
Similar properties nearby
1 Castle Road, Tongwynlais
CF15 7JQ
1 Castell Coch View, Tongwynlais
CF15 7LA
1 Anchor Street, Taffs Well
CF15 7RH
1 Castle Street, Taffs Well
CF15 7RL
1 Bute Street, Tongwynlais
CF15 7LJ
1 Church Lane, Nantgarw
CF15 7TQ
1 Forest Cottage, Castle Road, Tongwynlais
CF15 7JR
1 Church Street, Taffs Well
CF15 7PG
The neighbourhood at a glance
Crime
85/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Pantgwynlais — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







