7b, Alpha Drive, Birkenhead, CH42 1PH

7b is a semi-detached house in Birkenhead (CH42 1PH). It has a recorded floor area of 48 m² (around 517 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (March 2019) shows a D (score 57), a step below the typical UK home. The rating has held steady at D across 4 certificates since February 2009. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Good and lighting went from Poor to Average. The recommended improvements would push it to C (score 73). At 48 m² this is the 3rd smallest of 23 units on EPC record in the building, where floor areas span 42–205 m². The building's EPC ratings span E to C across 23 units on file.

Held since February 2005 — that's 21 years off the open market, well above the local norm. Across 1998–2005, sale prices on this property compounded at 2.9% per year. Today's modelled estimate of £130,000 sits 116.7% above the 2005 sale of £60,000. On a £-per-square-foot basis, the last sale (£116/sq ft) was about 50% above the typical sold price in the postcode. At 48 m² it sits well below the postcode median (99 m² across 22 EPCs), making it one of the more compact homes locally.