11a, Froghall Lane, Walkern, Stevenage, SG2 7PH

11a is a five-bedroom detached house in Walkern, Stevenage, Stevenage (SG2 7PH). It has a recorded floor area of 173 m² (around 1862 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (July 2018) shows a C (score 76), near the top of the C band. When first surveyed in January 2014 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to B (score 82). Other recorded features include a conservatory. Records show the property has been extended at some point in its history.

At 173 m² the property is well over the postcode median (115 m² across 16 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). One planning record on file: an extension approved in 2011. Past consents include an extension, meaningful when judging how the property has evolved. Across 1999–2018, sale prices on this property compounded at 6.5% per year. Today's modelled estimate of £768,000 is 31.3% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£314/sq ft) was about 30.6% above the typical sold price in the postcode. Sold November 2018 for £585,000.