Westminster, Greater London, United Kingdom
Castle House at 12 Great Castle Street is a mixed-use commercial property in Westminster, central London, close to Regent Street and Oxford Circus. Dating from 1800, the building combines ground-floor and basement retail accommodation with office space across the upper floors. Its position within a well-established West End commercial district makes it suitable for businesses seeking a central London address with convenient access to shopping, dining and transport facilities.
The property has approximately 2,071 sq ft of net internal area (NIA), with two office suites of 315 sq ft each currently advertised on the first and second floors. The building also features approximately 16 feet of frontage onto Great Castle Street, providing a visible presence within the surrounding commercial environment.
Located at 12 Great Castle Street, London W1W 8LR, Castle House occupies a central position in the Westminster submarket, near Regent Street and Oxford Circus. The surrounding area features a mix of retail destinations, restaurants, professional offices and established businesses, attracting office workers, shoppers and visitors throughout the day.
The property's proximity to Oxford Circus and the wider West End provides convenient access to major commercial destinations, including Oxford Street, Regent Street and the surrounding Fitzrovia and Mayfair areas.
Property Name: Castle House
Property Address: 12 Great Castle Street, London W1W 8LR
Property Type: Mixed-use retail and office building
Building Class: B
Building Rating: 2-star retail shopfront retail/office
Net Internal Area: 2,071 sq ft
Available Office Space: 630 sq ft
Available Suites: Two offices of 315 sq ft each
Maximum Contiguous Space: 630 sq ft
Floors: Five recorded in the main property data; building notes describe six levels including the basement
Typical Floor Area: Approximately 515 sq ft
Year Built: 1800
Construction: Masonry
Tenancy: Multi-let
Owner-Occupancy: No
Lift: None recorded
Retail Area: Approximately 1,441 sq ft in the building-use breakdown
Office Area: Approximately 630 sq ft
Street Frontage: Approximately 16 feet on Great Castle Street
Parking: Covered parking available, subject to confirmation
Available Floors: First and second floors
The building provides retail accommodation at ground and basement levels, with offices on the upper floors. The property data identifies 630 sq ft of vacant office space, while the retail accommodation is recorded separately within the building's existing use breakdown.
The asking rent for the two available office suites is withheld. CoStar provides an estimated retail rental range of £87–£107 per sq ft per annum, on an FRI basis. This is a retail estimate and should not be treated as a confirmed office rental rate.
For reference, applying the estimated range to the available 630 sq ft would produce an illustrative annual figure of £54,810–£67,410. This calculation is indicative only and does not establish the asking rent for the office suites.
The confirmed office rent, service charge and lease terms should be obtained from the letting agent before proceeding.
Ground-floor and basement retail accommodation
Office suites on upper floors
Approximately 16 feet of Great Castle Street frontage
Signage opportunities
Storage space
Security system
Nearby bus routes
Convenient access to Underground services
Covered parking availability, subject to confirmation
Flexible office accommodation: Two office suites of 315 sq ft each are available, with the option to consider both spaces together for a combined 630 sq ft requirement.
Central London address: The property is positioned close to Regent Street and Oxford Circus, providing access to major West End commercial and retail destinations.
Retail presence: Existing ground-floor and basement retail accommodation contributes to the building's mixed-use commercial profile.
Street visibility: Approximately 16 feet of frontage on Great Castle Street supports the property's retail presence and signage potential.
Established business environment: The surrounding area offers access to retail operators, restaurants, professional services and other commercial occupiers.
Convenient transport links: Oxford Circus Underground Station is approximately 0.1 miles away, supporting access for staff, clients and visitors.
Oxford Circus Underground Station is approximately 0.1 miles away, with Bond Street around 0.4 miles away and Tottenham Court Road approximately 0.5 miles away. London Charing Cross is around 1.2 miles away, while London Euston is approximately 2 miles away.
For further details or to make a booking, please contact Fraser Bond.
