A standout property in St John’s Wood is seeking a new owner, asking just under £15mn.

One of only a handful of low-built detached properties in the neighbourhood, the double-fronted six-bed (5,579 sq ft) on Marlborough Place dates back to 1843 and is just around the corner from the American School.Describing the proposition as “unique to the area”, listing agency Ian Green Residential flags up key selling points including an 84-foot landscaped garden and lots of parking – along with some significant potential. Permission has been granted to boost the overall size by another 2,500 sq ft via the addition of a leisure complex in the basement, said the firm, allowing room for a swimming pool, cinema room, gym, guest or staff suite, and a wine cellar.