18 Celtic Close, Undy, Caldicot, NP26 3PB

18 Celtic Close is a three-bedroom detached house in Undy, Caldicot, Caldicot (NP26 3PB). It has a recorded floor area of 81 m² (around 872 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (October 2015) shows an E (score 50), well below the UK norm with real room to improve. Earlier certificates rated it D (May 2011); the latest reading is one band lower. Between certificates, roof efficiency went from Average to Good; while wall efficiency dropped from Good to Poor and hot-water efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 88), a 3-band jump. The latest certificate is from October 2015, so improvements made since then won't be reflected.

Sale prices here have outpaced England HPI: 6% per year against 0% for the wider region. Today's modelled estimate of £327,000 is 45% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£259/sq ft) was about 38.7% above the typical sold price in the postcode. At 81 m² it's 15.6% smaller than the typical home in the postcode (96 m² median across 22 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Last changed hands 9 years ago, in August 2017. Across the public record there are 4 sales, relatively high churn for a single property.