Washington House, Conduit Street

Washington House 40-41 Conduit Street, London, Greater London, W1S 2YQ, UK

Description

Washington House is situated on the southern side of Conduit Street, opposite the junction with St. George Street. The building also has a frontage onto Coach and Horses Yard, a cul-de-sac located to the rear, providing a secondary access for Washington House.

The existing building is arranged over basement, ground, mezzanine and 6 upper floors, and was previously used as a private members’ club known as ’The Conduit’.

The building’s fundamentals are impressive with generous slab to slab heights up to 3.9m, excellent levels of natural light and terracing on the 4th and 6th floors, with potential to create an additional 7th floor with a private terrace.

The property would be well-suited to a range of uses, including offices, restaurant, private members club or hotel.

The building currently has consent in place to comprehensively refurbish the property and deliver 31,966 sq ft (2,970 sq m) of best in class office, as well as existing consents to alternatively deliver an exceptional hotel accommodation or a private members’ club.

Vacant possession can be obtained by the end of Q1 2026.

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Attributes

Building area net

2,804 m²

Investment strategy

Value Add

Tenure

Part Leasehold/Freehold

Planning permission

Consented

Media

Investment Highlights

Unique consented office refurbishment and extension opportunity.
Prime Mayfair Freehold trophy asset.
The building has been stripped out and is offered with full vacant possession by the end of Q1 2026.
Situated in the heart of Mayfair, commanding a prime position where Conduit Street meets St George Street.
Offering unparalleled views onto Hanover Square and Berkeley Square from the building's upper floors.
The UK’s first St Regis Hotel will open in March 2026, bringing the iconic brand’s rich heritage to this sought after address, revitalising the immediate location.
The building benefits from three planning consents for use as offices, private members club or hotel.
Existing office NIA of 30,179 sq ft (2,803.7 sq m) arranged over basement, ground, mezzanine and six upper floors, with planning consented for a further 1,787 sq ft (166 sq m), with a generous terrace looking up to Hanover Square on the seventh floor.
Impressive and imposing building with an attractive period façade, generous slab to slab heights extending to 3.9m and abundant natural light from dual aspects.
Excellent opportunity to capitalise on Mayfair’s premium office rental values with compelling rental growth prospects forecast over the delivery period.
Opportunity for owner occupiers, investors and developers.
Offers invited for the freehold interest, subject to vacant possession in March 2026.