1 Celtic House, Hooper Street, Cambridge, CB1 2PB

1 Celtic House is a one-bedroom detached house in Cambridge (CB1 2PB). It has a recorded floor area of 34 m² (around 366 sq ft), construction records dating it to 1983-1990 and council tax band B. The latest certificate (July 2021) shows a D (score 59), a step below the typical UK home. The rating has held steady at D across 3 certificates since April 2010. Between certificates, main heating went from Poor to Average; while hot-water efficiency dropped from Average to Very Poor. The recommended improvements would push it to C (score 75). Main heating runs on electricity. At 34 m² this is the 2nd smallest of 7 units on EPC record in the building, where floor areas span 34–38 m². The building's EPC ratings span E to C across 7 units on file.

Held since April 2006 — that's 20 years off the open market, well above the local norm. Across 1997–2006, sale prices on this property compounded at 13.2% per year. Today's modelled estimate of £243,000 is 49.1% above the 2006 sale price. On a £-per-square-foot basis, the last sale (£445/sq ft) was about 194.4% above the typical sold price in the postcode.