40 Mayfield Avenue, Cardiff, CF5 1AN
About 40 Mayfield Avenue
40 Mayfield Avenue is a three-bedroom mid-terrace house in Cardiff (CF5 1AN). It has a recorded floor area of 91 m² (around 980 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (July 2018) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since February 2009. The recommended improvements would lift it to B (score 83), a 2-band jump. Other recorded features include a conservatory.
Held since July 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Across 2000–2009, sale prices on this property compounded at 8% per year. Today's modelled estimate of £329,000 sits 71.4% above the 2009 sale of £192,000.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
- ConservatoryYes
Outside
- Private gardenRear
Building
- RefurbishedYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 9 July 2028
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
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
40 Mayfield Avenue has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Sale price has at least doubled since 2000.
£329,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.0% per year over 9 years.
£192,000
Growth on file: 8.0% per year over 9 years.
Sales timeline
16 July 2009Most recent
£192,000
-15.8%over 1 year23 August 2007
£228,000
+140.0%over 7 years17 May 2000
£95,000
Median price across the last 5 sales in CF5 1AN: £400,000 (2025–2023).
Nearby sales in CF5 1AN
Versus other Mayfield Avenue homes
40 Mayfield Avenue outperforms the street on years held by a wide margin.
Price per m²
£2,110
Street avg £3,007
Floor Area
91 m²
Street avg 107 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.4 t/year
Street avg 4.4 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
426/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Windway Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







