25d, Whittlebury Road, Silverstone, Towcester, NN12 8UN

25d is a five-bedroom detached house in Silverstone, Towcester, Towcester (NN12 8UN). It has a recorded floor area of 124 m² (around 1339 sq ft), construction records dating it to 1983-1990 and council tax band F. The latest certificate (August 2011) shows a D (score 61), on the cusp of jumping into the C band. Main heating runs on oil. The latest certificate is from August 2011, so improvements made since then won't be reflected.

Held since September 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 124 m² the property is well over the postcode median (65 m² across 26 EPCs), placing it in the larger end of the local stock. 4 planning records sit against the property, 2 approved, 0 refused. Past consents include tree works and an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £554,000 is 31.9% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£314/sq ft) was about 31.6% above the typical sold price in the postcode.