23 Birchfield Road, Northampton, NN1 4RF

23 Birchfield Road is a mid-terrace house in Northampton (NN1 4RF). It has a recorded floor area of 105 m² (around 1130 sq ft) and construction records dating it to 1900-1929. The latest certificate (November 2022) shows a D (score 55), a step below the typical UK home. When first surveyed in March 2009 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Average, hot-water efficiency went from Average to Good and lighting went from Poor to Very Good. The recommended improvements would push it to C (score 76). At 105 m² this is the 3rd smallest of 27 units on EPC record in the building, where floor areas span 26–224 m². The building's EPC ratings span F to C across 27 units on file.

Sold January 2023 for £199,995. Across the public record there are 10 sales, relatively high churn for a single property. Across 1999–2023, sale prices on this property compounded at 6% per year. On a £-per-square-foot basis, the last sale (£177/sq ft) was about 21.7% above the typical sold price in the postcode. At 105 m² it's 20.9% smaller than the typical home in the postcode (133 m² median across 26 EPCs).