21 Durham House, Scholars Park, Darlington, DL3 7FD

21 Durham House is a two-bedroom semi-detached house in Darlington (DL3 7FD). It has a recorded floor area of 66 m² (around 710 sq ft), construction records dating it to 1996-2002 and council tax band C. At 66 m² this is the 16th smallest of 22 units on EPC record in the building, where floor areas span 51–72 m². The building's EPC ratings span C to B, with this unit at the bottom. Our model identifies extension potential, subject to local planning policy. The latest certificate (August 2022) shows a C (score 79), near the top of the C band. Earlier certificates rated it B (April 2009); the latest reading is one band lower. Between certificates, window efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 81).

Across 2006–2006, sale prices on this property compounded at 4% per year. Today's modelled estimate of £135,000 is 35.1% below the 2006 sale of £208,000, below the original sale price, which typically signals condition or completion-status changes worth verifying. On a £-per-square-foot basis, the last sale (£293/sq ft) was about 23.5% above the typical sold price in the postcode. Untraded for 20 years, with the last transfer in November 2006.