18 The Cloisters, Welwyn Garden City, AL8 6DX

18 The Cloisters is an end-of-terrace house in Welwyn Garden City (AL8 6DX). It has a recorded floor area of 25 m² (around 269 sq ft), construction records dating it to 1991-1995 and council tax band B. At 25 m² this is the smallest unit on EPC record across the building (25–49 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (October 2020) shows a C (score 74). The rating has held steady at C across 2 certificates since October 2009. Between certificates, lighting went from Average to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Poor to Very Poor. The recommended improvements would push it to B (score 81). Main heating runs on electricity.

Across 1997–2021, sale prices on this property compounded at 6.8% per year. On a £-per-square-foot basis, the last sale (£676/sq ft) was about 176.5% above the typical sold price in the postcode. At 25 m² it's 24.2% smaller than the typical home in the postcode (33 m² median across 16 EPCs). Sold September 2021 for £182,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.