15 Mill Road, Tongwynlais, Cardiff, CF15 7JP
About 15 Mill Road
15 Mill Road is a mid-terrace house in Tongwynlais, Cardiff, Cardiff (CF15 7JP). It has a recorded floor area of 65 m² (around 700 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (September 2025) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in May 2009 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Poor to Average and hot-water efficiency went from Poor to Good. The recommended improvements would lift it to B (score 81), a 2-band jump.
At 65 m² it's 20.7% smaller than the typical home in the postcode (82 m² median across 17 EPCs).
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Windows upgraded, improving insulation
Roof insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
15 Mill Road 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
15 Mill Road has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£257,000
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 CF15 7JP: £271,000 (2024–2021).
Nearby sales in CF15 7JP
7 Mill Road, Tongwynlais, Cardiff, CF15 7JP
Sold Apr 2024
£240,00048 Mill Road, Tongwynlais, Cardiff, CF15 7JP
Sold Apr 2024
£344,00020 Mill Road, Tongwynlais, Cardiff, CF15 7JP
Sold Dec 2022
£271,00040 Mill Road, Tongwynlais, Cardiff, CF15 7JP
Sold Jun 2021
£355,00042 Mill Road, Tongwynlais, Cardiff, CF15 7JP
Sold Mar 2018
£260,000
Versus other Mill Road homes
CO₂ Emissions for 15 Mill Road runs comfortably ahead of the street norm.
EPC Rating
65 (D)
Street avg 60 (D)
Floor Area
65 m²
Street avg 90 m²
CO₂ Emissions
2.5 t/year
Street avg 4.5 t/year
Habitable Rooms
4 rooms
Street avg 5 rooms
Similar properties nearby
1 Abbey Close, Taffs Well
CF15 7RS
1 Castell Coch View, Tongwynlais
CF15 7LA
1 Chapel Cottage, Tabor Street, Taffs Well
CF15 7PS
1 Beechwood Road, Taffs Well
CF15 7RZ
1 Anchor Street, Taffs Well
CF15 7RH
1 Castle Road, Tongwynlais
CF15 7JQ
1 Church Lane, Nantgarw
CF15 7TQ
1 Church Street, Taffs Well
CF15 7PG
The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Lewis Arms — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







