25b, Carlyle Road, Norwich, NR1 3AB

25b is a one-bedroom mid-terrace house in Norwich (NR1 3AB). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to before 1900 and council tax band A. At 42 m² this is the smallest unit on EPC record across the building (42–92 m²). The building's EPC ratings span E to C across 41 units on file. Period features are noted in the property record. The latest certificate (March 2021) shows a D (score 65), on the cusp of jumping into the C band. Earlier certificates rated it C (January 2009); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Average to Good and lighting went from Average to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to C (score 74).

It hasn't traded since August 2001, a hold of 25 years that's notably long for the area. Across 2000–2001, sale prices on this property compounded at 30.9% per year. Today's modelled estimate of £134,000 sits 170.7% above the 2001 sale of £49,500. On a £-per-square-foot basis, the last sale (£109/sq ft) was about 38% below the postcode norm. At 42 m² it sits well below the postcode median (74 m² across 40 EPCs), making it one of the more compact homes locally.