11a, High Street, Byfield, Daventry, NN11 6XQ

11a is a four-bedroom detached house in Byfield, Daventry, Daventry (NN11 6XQ). It has a recorded floor area of 183 m² (around 1970 sq ft), construction records dating it to before 1900 and council tax band F. The latest certificate (February 2026) shows a C (score 71). When first surveyed in April 2011 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Average; while roof efficiency dropped from Very Good to Good. This certificate was lodged in the last six months, so the rating reflects current condition. Period features are noted in the property record.

At 183 m² the property is well over the postcode median (86 m² across 11 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. Across 1996–2021, sale prices on this property compounded at 6% per year. Today's modelled estimate of £530,000 is 17.8% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£228/sq ft) was about 43.5% above the typical sold price in the postcode. One planning record on file: partial demolition refused in 2006. Last sale on file: £450,000 in March 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.