13 Maes Y Ffynnon, Bonvilston, Cardiff, CF5 6TT
About 13 Maes Y Ffynnon
13 Maes Y Ffynnon is a three-bedroom semi-detached house in Bonvilston, Cardiff, Cardiff (CF5 6TT). It has a recorded floor area of 128 m² (around 1378 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (May 2026) shows a C (score 78), near the top of the C band. When first surveyed in February 2015 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good, roof efficiency went from Average to Very Good and lighting went from Average to Good. The recommended improvements would push it to B (score 82). This certificate was lodged in the last six months, so the rating reflects current condition.
At 128 m² the property is well over the postcode median (91 m² across 17 EPCs), placing it in the larger end of the local stock. Across 1997–2015, sale prices on this property compounded at 7.8% per year. Today's modelled estimate of £386,000 sits 79.5% above the 2015 sale of £215,000. On a £-per-square-foot basis, the last sale (£156/sq ft) was about 28.6% below the postcode norm. Last changed hands 11 years ago, in July 2015. Across the public record there are 5 sales, relatively high churn for a single property.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Open-plan layoutYes
- Dining roomYes
- Utility roomYes
- CloakroomYes
Outside
- Private gardenYes
- ParkingOff road
Building
- Heating systemGas
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 20 May 2036
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Wall insulation improved
Loft insulation upgraded to recommended levels
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
13 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
Sale price has grown by over 3x since 1997.
£386,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.8% per year over 18 years.
£215,000
Growth on file: 7.8% per year over 18 years.
Sales timeline
5 July 2015Most recent
£215,000
+34.6%over 11 years20 May 2004
£159,750
+33.1%over 1 year21 November 2002
£120,000
+33.4%over 2 years31 August 2000
£89,950
+66.6%over 3 years28 February 1997
£54,000
Median price across the last 5 sales in CF5 6TT: £335,000 (2025–2023).
Nearby sales in CF5 6TT
5 Maes Y Ffynnon, Bonvilston, Cardiff, CF5 6TT
Sold Jul 2025
£335,0001 Maes Y Ffynnon, Bonvilston, Cardiff, CF5 6TT
Sold Sept 2024
£350,00019 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
£405,000
Versus other Maes Y Ffynnon homes
13 Maes Y Ffynnon is notably below the street on price per m².
Price per m²
£1,680
Street avg £2,868
Floor Area
128 m²
Street avg 100 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
2.6 t/year
Street avg 4.4 t/year
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The neighbourhood at a glance
Crime
426/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.







