3a, Collingdon Street, Luton, LU1 1RT

3a is an end-of-terrace house in Luton (LU1 1RT). It has a recorded floor area of 20 m² (around 215 sq ft) and construction records dating it to 1900-1929. At 20 m² this is the smallest unit on EPC record across the building (20–75 m²). The building's EPC ratings span G to C across 40 units on file. The latest certificate (November 2019) shows an E (score 52), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since November 2019. The recommended improvements would lift it to C (score 77), a 2-band jump. Main heating runs on electricity.

Across 1997–2019, sale prices on this property compounded at 10.6% per year. Today's modelled estimate of £169,000 is 23.2% below the 2019 sale of £220,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£1,022/sq ft) was about 136.8% above the typical sold price in the postcode. At 20 m² it sits well below the postcode median (37 m² across 39 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 79% of similar EPCs). Most recent transfer: August 2019 at £220,000.