The Old Mill, Flat 17, Royston Road, Wendens Ambo, Saffron Walden, CB11 4JX

The Old Mill is an end-of-terrace house in Wendens Ambo, Saffron Walden, Saffron Walden (CB11 4JX). It has a recorded floor area of 12 m² (around 129 sq ft) and construction records dating it to 2012-2021. At 12 m² this is the smallest unit on EPC record across The Old Mill (12–64 m²). The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (November 2025) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (December 2015); the latest reading is one band lower. Between certificates, roof efficiency went from Good to Very Good and hot-water efficiency went from Average to Good; while wall efficiency dropped from Very Good to Good and window efficiency dropped from Good to Average. Main heating runs on electricity.

At 12 m² it sits well below the postcode median (60 m² across 29 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £254,000 is 21% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£1,626/sq ft) was about 299% above the typical sold price in the postcode. Last sale on file: £210,000 in July 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.