4 Moon House, Railway Approach, Harrow, HA1 1XF

4 Moon House is a one-bedroom detached house in Harrow (HA1 1XF). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 2003-2006 and council tax band C. The latest certificate (December 2025) returns a B (score 81), comfortably above the UK average. When first surveyed in February 2009 the rating was C, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Poor to Average and main heating went from Poor to Average; while window efficiency dropped from Good to Poor. Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition. Other recorded features include a balcony.

It hasn't traded since November 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £205,000 sits 485.7% above the 2009 sale of £35,000. On a £-per-square-foot basis, the last sale (£69/sq ft) was about 62.6% below the postcode norm. At 47 m² it's 26.6% smaller than the typical home in the postcode (64 m² median across 15 EPCs). Its energy rating outperforms most of the postcode (better than 87% of similar EPCs).