123a, Crossbrook Street, Cheshunt, Waltham Cross, EN8 8LY

123a is a two-bedroom mid-terrace house in Cheshunt, Waltham Cross, Waltham Cross (EN8 8LY). It has a recorded floor area of 69 m² (around 743 sq ft), construction records dating it to 1930-1949 and council tax band B. The latest certificate (October 2019) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in July 2009 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Very Poor to Average and window efficiency went from Very Poor to Average; while hot-water efficiency dropped from Good to Very Poor. The recommended improvements would push it to C (score 79).

It hasn't traded since March 2008, a hold of 18 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 69 m² the property is well over the postcode median (51 m² across 12 EPCs), placing it in the larger end of the local stock. Across 1996–2008, sale prices on this property compounded at 11.4% per year. Today's modelled estimate of £263,000 sits 69.7% above the 2008 sale of £155,000. On a £-per-square-foot basis, the last sale (£209/sq ft) was about 603.9% above the typical sold price in the postcode.