21a, Friars Quay, Norwich, NR3 1ES

21a is a one-bedroom detached house in Norwich (NR3 1ES). It has a recorded floor area of 35 m² (around 377 sq ft), construction records dating it to 1967-1975 and council tax band A. The latest certificate (April 2026) shows a C (score 72). The rating has held steady at C across 2 certificates since March 2011. Between certificates, window efficiency went from Very Poor to Average and lighting went from Good to Very Good; while wall efficiency dropped from Average to Poor. This certificate was lodged in the last six months, so the rating reflects current condition. At 35 m² this is the 4th smallest of 41 units on EPC record in the building, where floor areas span 29–177 m². The building's EPC ratings span E to A across 41 units on file.

Held since September 2006 — that's 20 years off the open market, well above the local norm. At 35 m² it sits well below the postcode median (133 m² across 40 EPCs), making it one of the more compact homes locally. Across 1998–2006, sale prices on this property compounded at 15.2% per year. Today's modelled estimate of £129,000 is 12.2% above the 2006 sale price. On a £-per-square-foot basis, the last sale (£305/sq ft) was about 31.4% above the typical sold price in the postcode.