Flat 2, 70 Harrowby Road, Grantham, NG31 9DS

Flat 2 is a one-bedroom end-of-terrace house in Grantham (NG31 9DS). It has a recorded floor area of 77 m² (around 829 sq ft) and construction records dating it to before 1900. At 77 m² this is the largest unit on EPC record across the building (45–77 m²). The building's EPC ratings span E to D, with this unit at the bottom. On EPC score it ranks last in the building (39 versus a best of 58). The latest certificate (November 2025) shows an E (score 39), well below the UK norm with real room to improve. When first surveyed in September 2015 the rating was G, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Poor and roof efficiency went from Very Poor to Good; while window efficiency dropped from Good to Poor. The recommended improvements would lift it to C (score 77), a 2-band jump. Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition.

Held since December 2007 — that's 18 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 77 m² it's 17.2% smaller than the typical home in the postcode (93 m² median across 42 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 74% of similar EPCs). On a £-per-square-foot basis, the last sale (£160/sq ft) was about 32.3% above the typical sold price in the postcode.