1 Maes Y Ffynnon, Bonvilston, Cardiff, CF5 6TT
About 1 Maes Y Ffynnon
1 Maes Y Ffynnon is a semi-detached house in Bonvilston, Cardiff, Cardiff (CF5 6TT). It has a recorded floor area of 104 m² (around 1119 sq ft) and construction records dating it to 1950-1966. The latest certificate (May 2024) shows an E (score 50), well below the UK norm with real room to improve. When first surveyed in February 2018 the rating was F, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Poor to Good, lighting went from Poor to Good and main heating went from Average to Good. The recommended improvements would lift it to C (score 79), a 2-band jump.
At 104 m² it's 16.9% larger than the typical home in the postcode (89 m² median across 17 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 88% of similar EPCs). Across 2018–2024, sale prices on this property compounded at 5.1% per year. On a £-per-square-foot basis, the last sale (£313/sq ft) was about 55.4% above the typical sold price in the postcode. Last sale on file: £350,000 in September 2024.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Switched from oil to mains gas, reducing emissions and costs
Hot water system upgraded
Windows upgraded, improving insulation
More low energy lighting installed
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Planning history
1 Maes Y Ffynnon 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
1 Maes Y Ffynnon valuation sits well clear of the typical sold price in this postcode.
£375,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.1% per year over 6 years.
£350,000
Growth on file: 5.1% per year over 6 years.
Sales timeline
30 September 2024Most recent
£350,000
+37.3%over 6 years31 May 2018
£255,000
Median price across the last 5 sales in CF5 6TT: £305,000 (2024–2020).
Nearby sales in CF5 6TT
19 Maes Y Ffynnon, Bonvilston, Cardiff, CF5 6TT
Sold Jul 2024
£260,00010 Maes Y Ffynnon, Bonvilston, Cardiff, CF5 6TT
Sold Jul 2024
£320,00011 Maes Y Ffynnon, Bonvilston, Cardiff, CF5 6TT
Sold Aug 2023
£405,00015 Maes Y Ffynnon, Bonvilston, Cardiff, CF5 6TT
Sold Jun 2022
£190,0003 Maes Y Ffynnon, Bonvilston, Cardiff, CF5 6TT
Sold Nov 2020
£299,995
Versus other Maes Y Ffynnon homes
1 Maes Y Ffynnon is notably below the street on years held.
Price per m²
£3,365
Street avg £2,801
Floor Area
104 m²
Street avg 99 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.7 t/year
Street avg 4.4 t/year
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The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Maes-y-Ffynon — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







