18 Abon House, Sea Mills Lane, Bristol, BS9 1DU

18 Abon House is a two-bedroom semi-detached house in Bristol (BS9 1DU). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to 1967-1975 and council tax band B. The latest certificate (August 2023) shows an F (score 27), near the bottom of the EPC scale. The rating has held steady at F across 2 certificates since June 2012. Between certificates, lighting went from Poor to Very Good; while window efficiency dropped from Good to Average and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 75), a 3-band jump. Main heating runs on electricity. At 51 m² this is the 9th smallest of 15 units on EPC record in the building, where floor areas span 46–59 m². The building's EPC ratings span F to C, with this unit at the bottom. On EPC score it ranks last in the building (27 versus a best of 76).

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Last sold in June 2017, so it's been off the market for around 9 years. Across the public record there are 6 sales, relatively high churn for a single property. Across 1995–2017, sale prices on this property compounded at 7.3% per year. Today's modelled estimate of £225,000 is 23.3% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£332/sq ft) was about 47.7% above the typical sold price in the postcode.