Rx London Chesterfield Street, Mayfair

9 Chesterfield Street is a Grade II listed Mayfair townhouse with a beautifully restored period frontage, arranged over lower ground, ground and five upper floors just off Curzon Street, moments from Berkeley Square and a short walk from Green Park. RX London (rx.london) — a Central London commercial property advisory and leasing agency, not a flex or managed-office operator — is marketing the building on behalf of the landlord by way of an assignment of the existing lease (running to December 2031, with a tenant-only break in December 2026); no managed-office brand or confirmed landlord name could be identified for this property.

Seven self-contained office floors are listed, from a 462 sq ft 5th-floor suite up to a 684 sq ft 1st-floor floor, totalling 4,156 sq ft across the building. Desk counts are not published and rent is quoted "on application" by square footage (around £90/sq ft per annum, with rates and service charge also on application) rather than as a monthly figure; every floor is marketed in "Not Fitted" shell condition. All prices, once available, would be quoted per month in GBP.

The building sits a short walk from Green Park station (Piccadilly, Victoria and Jubilee lines) and Bond Street station (Central, Jubilee and Elizabeth lines plus National Rail), both within easy reach of Mayfair and Berkeley Square (walk times verify).