21a, Filgrave, Newport Pagnell, MK16 9ET

21a is a mid-terrace house in Filgrave, Newport Pagnell, Newport Pagnell (MK16 9ET). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (February 2021) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in February 2010 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Average to Good, hot-water efficiency went from Poor to Good and main heating went from Poor to Good. The recommended improvements would lift it to B (score 89), a 2-band jump.

Untraded for 19 years, with the last transfer in August 2007. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 58 m² it sits well below the postcode median (114 m² across 27 EPCs), making it one of the more compact homes locally. Across 1996–2007, sale prices on this property compounded at 12.1% per year. Today's modelled estimate of £259,000 is 38.5% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£300/sq ft) was about 37.3% above the typical sold price in the postcode.