15 Chantry Close, Great Billing, Northampton, NN3 9EG

15 Chantry Close is a five-bedroom detached house in Great Billing, Northampton, Northampton (NN3 9EG). It has a recorded floor area of 349 m² (around 3757 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (August 2016) returns a high B (score 87), putting the home a stone's throw from an A rating. When first surveyed in January 2015 the rating was F, the property has climbed 4 bands since. Between certificates, wall efficiency went from Poor to Very Good, roof efficiency went from Very Poor to Very Good and window efficiency went from Poor to Very Good. The latest certificate is from August 2016, so improvements made since then won't be reflected.

Across 2015–2026, sale prices on this property compounded at 13.1% per year. Today's modelled estimate of £897,000 is 18.5% below the 2026 sale of £1,100,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£293/sq ft) was about 47.8% above the typical sold price in the postcode. At 349 m² the property is well over the postcode median (135 m² across 10 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. Most recent transfer was June 2026 at £1,100,000 — fresh data. 2 planning records sit against the property, 2 approved, 0 refused.