Scott Brownrigg's Modernist Glass Mansion in Mayfair

Scott Brownrigg's Modernist Glass Mansion in Mayfair

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Scott Brownrigg have completed Down Street Mews in Mayfair. 

The two homes are now on the market with joint sole agents Central Estates and Beauchamp Estates and can be combined into one expansive house. Inspired by the Modernist glass house - La Maison de Verre in Paris, the residence/s are located within a quiet mews street adjacent to Green Park and have been created through the redevelopment of the former annex building to the Calvary and Guards club. The mews site used to house former Italian Count Dino Grandi's 'lost' mansion, of which only the black-brick Edwardian stables survive. Grandi was Italy's UK ambassador under Mussolini.

Considered by Westminster City Council to be ‘an architectural gem’ and ‘a contemporary addition to the Mayfair Conservation Area’, the design has set a quality standard that the Council are keen to promote more of within Westminster. The buildings deliver high-energy performance with a double skin glass façade, green roof, ground source heat pumps and generous floor to ceiling heights.

The Glass Mansion provides in total 13,583 square feet of luxurious living space across four levels with an additional three basement levels that include a cinema, private spa and swimming pool. There is also a spacious four-car garage and 226 square-foot garden patio at ground level together with a 1,251 square-foot roof garden.

“Our design explores the balance of light, privacy and form.”

Two translucent, glowing forms amongst the dense and complex urban context identify the buildings. Light and privacy are balanced through the optimal use of the solar orientation of the site to all habitable rooms via translucent panels and clear openings. New interaction has been created between the street and the mews, and the new buildings will be ‘viewed as light at the end of the tunnel’.  The composition of the façade is an interpretation of Japanese sliding screens made of either white translucent paper, which provides light, warmth and intimacy (the shoji), or opaque paper for privacy and interaction between the outside and the inside (the fusuma).

Made of one layer of frosted glass applied on both sides of a steel frame, the façade has its outer skin running consistently on all façades, whilst its inner skin changes to produce the opaque or the translucent finish required. Only the windows interrupt the outer skin leaving the space fully connected to the outside.

Like La Maison de Verre, the houses use skeleton frame steel construction allowing a free plan and therefore a flexible interior layout and can potentially be divided by permanent or movable screens in each of the upper floors. Whilst the generous ceiling heights not only allow natural daylight to flow inside the rooms but also to give the building the potential to be adaptable for other uses in the future.

The main living rooms are located on the top floor and are capped by the two rooftop gardens. Informal family rooms and a study span the second floor, while the first floor below it encompasses two sprawling bedroom suites and a third smaller bedroom. There are four more bedrooms on the ground level, where there is also a techy garage with stackers to accommodate four vehicles.

“The property is hitting the ultra-luxury market as affluent buyers flock to detached houses. In the £20 million-plus ultra-prime marketplace, we have found that Covid-19 has been a ‘game changer with buyers now choosing houses, where they can completely control access and their living environment, in preference to apartment buildings where there are the issues of shared access, visitors they don’t know and staff meeting lots of people.”

Gary Mesnick, Director, Central Estates

“Designed by multi-award winning practice Scott Brownrigg these magnificent glass houses in Down Street Mews allow the buyer to completely control access to their home and living environment and live in a private and secure address which is hidden off Down Street and protected by two sets of entry gates. The clear and frosted glass facades and the floor-to-ceiling windows and skylights allow light to cascade into the living spaces, providing an extremely bright and airy ambience.”

Gary Hersham, Founding Director, Beauchamp Estates

The houses, designed by Scott Brownrigg at Down Street Mews are for sale with a guide price of £50,000,000 to purchase as a single unit, or £25,000,000 each. The Buyer can also purchase an adjoining two bedroom mews apartment for £1,700,000. Contact joint sole agents Beauchamp Estates on Tel: +44 (0)20 7499 7722 or visit and Central Estates on Tel: +44 (0)20 7616 4500 or visit:

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