9 Wyndham Street, Tongwynlais, Cardiff, CF15 7LN
About 9 Wyndham Street
9 Wyndham Street is a three-bedroom end-of-terrace house in Tongwynlais, Cardiff, Cardiff (CF15 7LN). It has a recorded floor area of 90 m² (around 969 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (August 2019) shows a D (score 60), on the cusp of jumping into the C band. When first surveyed in September 2014 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Average and hot-water efficiency went from Average to Good. The recommended improvements would lift it to B (score 86), a 2-band jump.
At 90 m² the property is well over the postcode median (67 m² across 6 EPCs), placing it in the larger end of the local stock. Across 2014–2019, sale prices on this property compounded at 7.3% per year. Today's modelled estimate of £308,000 is 29.1% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£246/sq ft) was about 19.5% above the typical sold price in the postcode. Last sale on file: £238,500 in December 2019.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Open-plan layoutYes
- Dining roomYes
Outside
- Private gardenRear
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency improved
Roof insulation improved
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 £955 · Includes VAT
Planning history
9 Wyndham Street 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
9 Wyndham Street valuation sits well clear of the typical sold price in this postcode.
£308,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.3% per year over 5 years.
£238,500
Growth on file: 7.3% per year over 5 years.
Sales timeline
6 December 2019Most recent
£238,500
+42.4%over 5 years21 November 2014
£167,500
Median price across the last 5 sales in CF15 7LN: £190,000 (2025–2016).
Nearby sales in CF15 7LN
10 Wyndham Street, Tongwynlais, Cardiff, CF15 7LN
Sold Jul 2025
£306,0006 Wyndham Street, Tongwynlais, Cardiff, CF15 7LN
Sold Jan 2025
£225,00012 Wyndham Street, Tongwynlais, Cardiff, CF15 7LN
Sold Aug 2023
£156,00013 Wyndham Street, Tongwynlais, Cardiff, CF15 7LN
Sold Sept 2015
£254,9234 Wyndham Street, Tongwynlais, Cardiff, CF15 7LN
Sold Nov 2005
£159,950
Versus other Wyndham Street homes
Habitable Rooms for 9 Wyndham Street runs comfortably ahead of the street norm.
Price per m²
£2,650
Street avg £2,763
Floor Area
90 m²
Street avg 75 m²
Habitable Rooms
6 rooms
Street avg 4 rooms
CO₂ Emissions
4.5 t/year
Street avg 3.9 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Wyndham Street — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







