77a, Grand Avenue, Cardiff, CF5 4LE
About 77a
77a is a mid-terrace house in Cardiff (CF5 4LE). It has a recorded floor area of 69 m² (around 743 sq ft) and construction records dating it to 1900-1929. At 69 m² this is the largest unit on EPC record across the building (30–69 m²). The building's EPC ratings span G to C across 8 units on file. The latest certificate (February 2026) shows an F (score 23), near the bottom of the EPC scale. The recommended improvements would lift it to C (score 73), a 3-band jump. Main heating runs on to be used only when there is no heating/hot. This certificate was lodged in the last six months, so the rating reflects current condition.
At 69 m² it's 15% larger than the typical home in the postcode (60 m² median across 7 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs). Across 2002–2019, sale prices on this property compounded at -13.3% per year. On a £-per-square-foot basis, the last sale (£8/sq ft) was about 95.1% below the postcode norm. Most recent transfer: July 2019 at £6,000.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
Planning history
77a has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
77a's sale-price growth has lagged the wider UK trajectory across its history on file.
£6,000
Growth on file: -13.3% per year over 17 years.
Sales timeline
8 July 2019Most recent
£6,000
-90.8%over 16 years1 November 2002
£65,000
Median price across the last 5 sales in CF5 4LE: £107,000 (2022–1997).
Versus other Grand Avenue homes
Price per m² for 77a lags the street by a wide margin.
Price per m²
£87
Street avg £2,548
Floor Area
69 m²
Street avg 57 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
1.7 t/year
Street avg 3.4 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Charteris Green — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







