4 Bagthorpe Road, Bircham Newton, King's Lynn, PE31 6XB

4 Bagthorpe Road is a five-bedroom detached house in King's Lynn (PE31 6XB). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 2018 and council tax band D. The latest certificate (January 2022) returns an A (score 92), the top energy band on the EPC scale. Main heating runs on electricity: electricity, unspecified tariff. At 40 m² this is the smallest unit on EPC record across the building (40–248 m²). The building's EPC ratings span F to A, with this unit at the top. Other recorded features include a self-contained annexe, attached land beyond the plot and a basement.

Held since September 2010 — that's 16 years off the open market, well above the local norm. At 40 m² it sits well below the postcode median (153 m² across 9 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 89% of similar EPCs). 5 bedrooms is on the larger side for this postcode, where 3 is the typical count. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an annexe and an extension, meaningful when judging how the property has evolved. Across 2004–2010, sale prices on this property compounded at 3.3% per year. Today's modelled estimate of £352,000 is 43.7% above the 2010 sale price. On a £-per-square-foot basis, the last sale (£569/sq ft) was about 340.2% above the typical sold price in the postcode.