Fraser Bond are the leading lettings and property management agents for 21 Dartmouth Street - London SW1H. 21 Dartmouth Street is an office building in St James's Park, London SW1. The building comprises aa 53,000 sq ft of offices and 5,942 sq ft of terraces. Communal terrace on the 8th-floor. Private entrance off Lewisham Street. 2018 Autumn - The building was redeveloped by Quadrum Global in 2018. The development was managed by Bankfoot.