21a, Alder Crescent, Luton, LU3 1TG

21a is a two-bedroom mid-terrace house in Luton (LU3 1TG). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (May 2016) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since May 2016. Between certificates, lighting dropped from Average to Very Poor. The recommended improvements would push it to C (score 78). The latest certificate is from May 2016, so improvements made since then won't be reflected. At 49 m² this is the 4th smallest of 36 units on EPC record in the building, where floor areas span 35–173 m². The building's EPC ratings span F to C across 36 units on file.

Untraded for 20 years, with the last transfer in December 2005. At 49 m² it sits well below the postcode median (91 m² across 35 EPCs), making it one of the more compact homes locally. Across 1999–2005, sale prices on this property compounded at 22.3% per year. Today's modelled estimate of £159,000 is 33.6% above the 2005 sale price. On a £-per-square-foot basis, the last sale (£226/sq ft) was about 35.1% above the typical sold price in the postcode.