27 Colchester Avenue, Penylan, Cardiff, CF23 9BN

27 Colchester Avenue is a mid-terrace house in Penylan, Cardiff, Cardiff (CF23 9BN). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1900-1929 and council tax band B. At 52 m² this is the 3rd smallest of 13 units on EPC record in the building, where floor areas span 40–168 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (76 versus a worst of 46). The latest certificate (July 2025) shows a C (score 76), near the top of the C band. When first surveyed in August 2014 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Poor to Average, hot-water efficiency went from Poor to Good and main heating went from Average to Good.

Held since September 2005 — that's 21 years off the open market, well above the local norm. At 52 m² it sits well below the postcode median (139 m² across 12 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 83% of similar EPCs). Across 2004–2005, sale prices on this property compounded at 26.2% per year. On a £-per-square-foot basis, the last sale (£500/sq ft) was about 140.6% above the typical sold price in the postcode.