This extraordinary detached warehouse conversion is uniquely located on a private gated mews in central Islington. Designed by 6a Architects, one of the uk’s most acclaimed practices, in collaboration with the current owner, it offers security, seclusion and an interior of rare quality.

The house measures more than 3,500 sq ft over two floors, with a roof terrace on top. It has been configured to suit the needs of the current owner, but is highly flexible.

Upon entering the house, there is a reception room with a small downstairs utility area and a shower / cloakroom beyond. The ground floor also contains two separate artists’ studios (not pictured), with very high ceilings and natural light through high-level windows; each has a cloakroom and its own access from the mews. These are separated by simple blockwork walls, and could be combined to create one huge room or two en-suite bedrooms.

The first floor is dedicated to an astonishing 86ft living space. This is loosely divided, with a kitchen at one end, a dining area, sitting area, and a bedroom at the other end with a freestanding bath and a separate shower / steam room. It has a poured-concrete floor, a profiled-steel ceiling, exploded L beams and original warehouse doors. The house was designed for an art collector, with a series of glass vitrines and museum archive storage units set on floor runners, which can be repositioned to create different spatial arrangements. A spiral staircase in the kitchen provides access to the roof, which has an irrigation system, a decked seating area, and planting by the renowned landscape designer Dan Pearson.

The house is very secure, with metal roller shutters and a security system, and the gate to the mews is automatically locked every evening and at weekends. It has underfloor heating, solar panels, an air-source heat pump and a wood-burning fire. There is a projector and cinema screen on the upper floor, with built-in speakers and a Sonos sound system, and remote-control roof blinds. The house has provision for two cars to be parked in the mews.

The finest materials have been used in the conversion: Museum-standard uv glass that admits extensive natural light but doesn't damage the artworks; built-in ceramic tiles by the artist Paul Rego; bronze door furniture designed by 6a Architects; cast-concrete worktops; fossilised stone salvaged from Heathrow Airport; floors and kitchen worktops made from poured concrete.

Founded by rca graduates Tom Emerson and Stephanie Macdonald, 6a Architects are particularly notable for their work in the arts, including a highly lauded extension to the South London Gallery, the Raven Row gallery in Spitalfields, which was nominated for the Stirling Prize, and the Fashion Galleries at the V&A, which were nominated for the Mies van der Rohe Award. The practice recently gained significant international attention for a wonderful cast-iron façade at the Paul Smith showroom in Mayfair.

The mews is jointly owned by its residents. Angel Underground station (Northern Line), and the shops and restaurants on Upper Street, are a short walk away. The property is also conveniently located for the City, King’s Cross, Shoreditch and Clerkenwell.