1a, Flat 4, Kirby Road, Blackpool, FY1 6EB

1a is a nine-bedroom end-of-terrace house in Blackpool (FY1 6EB). It has a recorded floor area of 74 m² (around 801 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (January 2011) shows an F (score 36), near the bottom of the EPC scale. Earlier certificates rated it E (December 2008); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor; while hot-water efficiency dropped from Very Good to Very Poor and lighting dropped from Very Good to Very Poor. The recommended improvements would push it to E (score 54). The latest certificate is from January 2011, so improvements made since then won't be reflected. Our model identifies extension potential, subject to local planning policy.

Held since March 2008 — 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. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £119,000 sits 88.9% above the 2008 sale of £63,000.