Green light for new Avenue Road mansion with epic basement

'Larger-than-life' subterranean complex will sprawl across nearly 7,000 square feet

Planning has been granted for a significant new mansion on St John’s Wood’s Avenue Road.

Despite some notoriously stringent planning rules, Notting Hill-based Wolff Architects has managed to bag consent for a basement of epic proportions and take the total square footage up to a weighty 15,000.

This “larger-than-life” subterranean complex will sprawl across 6,908 square feet – around nine times the size of the average UK home – and contain a swimming pool, spa, home cinema and two guest double bedrooms.

The firm commissioned a raft of “complex and lengthy” geological and hydrological studies to demonstrate the project would not hurt the area’s drainage or structural stability, and eventually convinced the hard-to-please planners of Westminster.

The upper floors will house seven double beds and some major entertaining space leading out onto a landscaped garden.

Nick Pritchett, director of Wolff Architects: ʺThe project is yet another example of our ability to win exclusive permissions for technically challenging developments.

“Planning rules in an area as exclusive and well-preserved as Avenue Road are rightly very stringent – especially when it comes to building an ambitious basement like we proposed.

“However, our teams are skilful and diligent so were able to produce plans for an innovative and luxury subterranean level that also preserves the geological stability of the surrounding area. The overall result is a modern property equipped with state-of-the-art recreational facilities that does not compromise on space.”