4a, Coast Road, West Mersea, Colchester, CO5 8QE

4a is a two-bedroom mid-terrace house in West Mersea, Colchester, Colchester (CO5 8QE). It has a recorded floor area of 62 m² (around 667 sq ft), construction records dating it to 1976-1982 and council tax band B. The latest certificate (May 2012) shows an F (score 34), near the bottom of the EPC scale. The recommended improvements would push it to E (score 40). Main heating runs on electricity. The latest certificate is from May 2012, so improvements made since then won't be reflected. At 62 m² this is the 3rd smallest of 9 units on EPC record in the building, where floor areas span 59–245 m². The building's EPC ratings span F to C, with this unit at the bottom. On EPC score it ranks last in the building (34 versus a best of 69).

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2004–2015, sale prices on this property compounded at 0.8% per year. Today's modelled estimate of £197,000 sits 64.2% above the 2015 sale of £120,000. On a £-per-square-foot basis, the last sale (£180/sq ft) was about 73.6% above the typical sold price in the postcode. 11 years since the last transfer (March 2015).