SIA design build was employed to renovate and construct an extension at a 1960s property in a conservation area of Primrose Hill.
The brick maisonette has been modernised with a plywood clad circulation tower and an elevated terrace overlooking Regent's Park.
"To free up floor space, the property's original staircase was removed and a new one inserted within a three-storey-high extension.
This stairwell runs up one side of the brick house and is clad in panels of white painted marine-grade plywood, designed to withstand damp weather."
The interior layout was adapted, with the bedrooms, bathrooms and dining areas relocated to the lower floors, and a large living room with an adjoining terrace positioned on the top floor to take advantage of views over Regent's Park.
The panels are arranged to create a gridded pattern that is also replicated in the interior joinery. The new steel staircase is affixed to a series of original concrete beams exposed during the renovation works.
Glazing set into the sides of the tower and into a corner at ground level provides a natural light source for the stairwell.
Like the exterior, the stairwell is lined with a grid of plywood panels. This extends out into the adjoining entrance hall and living spaces, where wooden storage units are integrated into the walls and balustrades.