9 Castle Road, Isleworth, TW7 6QR

9 Castle Road is a four-bedroom mid-terrace house in Isleworth (TW7 6QR). It has a recorded floor area of 129 m² (around 1389 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (September 2021) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in October 2010 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Average and lighting went from Good to Very Good; while roof efficiency dropped from Average to Very Poor. The recommended improvements would push it to C (score 80).

At 129 m² the property is well over the postcode median (91 m² across 30 EPCs), placing it in the larger end of the local stock. 2 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Across 2000–2022, sale prices on this property compounded at 6.3% per year. Today's modelled estimate of £853,000 is 18.5% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£519/sq ft) was about 63.6% above the typical sold price in the postcode. Most recent transfer: February 2022 at £720,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.