Ground Floor Flat, 7 Colchester Avenue, Penylan, Cardiff, CF23 9BN
About Ground Floor Flat
Ground Floor Flat is a semi-detached house in Penylan, Cardiff, Cardiff (CF23 9BN). It has a recorded floor area of 100 m² (around 1076 sq ft) and construction records dating it to 1900-1929. The latest certificate (November 2014) shows an E (score 54), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since November 2014. The recommended improvements would lift it to C (score 72), a 2-band jump. The latest certificate is from November 2014, so improvements made since then won't be reflected.
At 100 m² it's 27.8% smaller than the typical home in the postcode (139 m² median across 12 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs).
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 24 Nov 2024
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has been extended more than once, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
Ground 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
Ground Floor Flat has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£172,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in CF23 9BN: £430,000 (2025–2018).
Nearby sales in CF23 9BN
7 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold Mar 2025
£615,00017 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold Jun 2024
£378,0005 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold Feb 2022
£570,00021 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold Oct 2020
£430,00035 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold May 2015
£376,000
Versus other Colchester Avenue homes
EPC Rating for Ground Floor Flat lags the street by a wide margin.
EPC Rating
54 (E)
Street avg 75 (C)
Floor Area
100 m²
Street avg 44 m²
CO₂ Emissions
5.3 t/year
Street avg 1.3 t/year
Habitable Rooms
5 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Colchester Avenue Top — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







