The Howard de Walden Estate is the freehold owner of most of the buildings in 92 acres of Marylebone, central London. It manages and leases properties across an area that extends from Marylebone High Street in the west to Portland Place in the east and from Wigmore Street in the south to Marylebone Road in the north.

The Estate is 100 per cent owned by the Howard de Walden family, whose deep historic connections to Marylebone date back to around 1710. With its entire operation based on Queen Anne Street, the business is firmly rooted in the local community and is fully committed to a long term investment strategy, with an equal focus on each of its four sectors: residential, office, medical and retail.