Architect and Builder March/April 2016 | Page 14

236 BUITENGRACHT STREET, CAPE TOWN This is a project for a small mixed use building within a mixed use enclave on the interface between the central city and the Bo Kaap. The site is currently vacant, but bounded on three sides by existing heritage buildings in poor condition, whilst further down the street a diverse collection of commercial buildings from the second half of the 20th century have replaced the older fabric. The presence of the historic stone retaining wall to the service road gives these buildings a shared podium, meaning that they will always be seen as an ensemble, rather than as slices of a city face only ever seen in close oblique. Because the zoning scheme allows for a multi-story building, the land price allows for no less to be built, and so the stage is set for an interesting game - how to find a building form which incorporates into itself the tensions of this context whilst developing a coherent presence of its own. Layered onto the complexity of context is a complex brief, or set of briefs. The city demands on-site parking, the street would benefit from an active frontage, the architects need a new studio, and the client, an art collector, wants a "skypad" and insists that it will all be made of concrete. The key to the solution is a tightly planned circulation core located front and centre of the site. The building line restrictions mean that the lift cannot rise to the top floor, and so a two level penthouse comes into play, with bedrooms and a lap pool en-suite to the en-suite occupying the fourth floor, with living spaces on the third. This placement allows for the mass to be broken down to give a picturesque 12 skyline stepped away from the street edge, with a viewing balcony facing the city and a sheltered north facing terrace looking up to Signal Hill. The pad is held up in the sky by a base consisting of a pair of double volume studio spaces flanking the