First Floor Flat, 13 Windway Avenue, Cardiff, CF5 1AP
About First Floor Flat
First Floor Flat is a semi-detached house in Cardiff (CF5 1AP). It has a recorded floor area of 45 m² (around 484 sq ft) and construction records dating it to 1930-1949. The latest certificate (September 2024) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in April 2011 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good; while lighting dropped from Very Good to Very Poor. The recommended improvements would push it to C (score 73).
It hasn't traded since July 1997, a hold of 29 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £182,000 sits 323.3% above the 1997 sale of £43,000. On a £-per-square-foot basis, the last sale (£89/sq ft) was about 58.2% below the postcode norm. At 45 m² it sits well below the postcode median (93 m² across 18 EPCs), making it one of the more compact homes locally.
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Roof insulation improved
Low energy lighting percentage decreased
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Planning history
First Floor Flat 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
Latest sale on First Floor Flat was the lowest on Land Registry record across the postcode.
£182,000
Modelled from EPC, postcode comparables.
£43,000
Recorded with HM Land Registry.
Sales timeline
21 July 1997Most recent
£43,000
Median price across the last 5 sales in CF5 1AP: £415,000 (2024–2022).
Nearby sales in CF5 1AP
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 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.







