20 Cottesbrooke Gardens, Northampton, NN4 0DE

20 Cottesbrooke Gardens is a four-bedroom detached house in Northampton (NN4 0DE). It has a recorded floor area of 144 m² (around 1550 sq ft), construction records dating it to 1991-1995 and council tax band D. The latest certificate (January 2016) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 4 certificates since March 2013. Between certificates, lighting went from Good to Very Good; while roof efficiency dropped from Good to Average and hot-water efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 85), a 2-band jump. The latest certificate is from January 2016, so improvements made since then won't be reflected. Records show the property has been extended at some point in its history. The home occupies a corner plot.

At 144 m² the property is well over the postcode median (105 m² across 38 EPCs), placing it in the larger end of the local stock. Across 1999–2013, sale prices on this property compounded at 11.6% per year. Today's modelled estimate of £439,000 sits 84.5% above the 2013 sale of £238,000. On a £-per-square-foot basis, the last sale (£154/sq ft) was about 28.1% above the typical sold price in the postcode. Last sold in November 2013, so it's been off the market for around 13 years. Across the public record there are 4 sales, relatively high churn for a single property.