Modular flats stacked seven storeys high a first for New York
Developer of the Stack in north Manhattan out to show prefab homes need not be monotonous
In a city awash with ambitious architecture, a seven-floor structure boasts a distinction of its own, as the first multi-storey, modular-built apartment block in New York, the apartment capital of the United States.
Called the Stack, the building near Manhattan's northern tip aims to show that while stackable flats can save time and money, modular doesn't have to mean monotonous. The building interiors defy their boxy components with varied layouts and finishes.
Construction from prefabricated sections has been around for decades, but interest has grown recently around the United States, with the world's tallest modular building, a 32-storey tower, rising in Brooklyn.
Advocates say modular building can trim costs and timetables. Still, the technique has an image problem in that it is sometimes perceived as cheap.
"'Prefab' and 'modular' have somewhat of a stigma associated with it in some people's minds, whether it's appropriate or not," developer Jeffrey Brown said. "[But] this approach can really produce cool buildings."
The Stack's 28 flats were formed from 59 modules. The rectangular components are all 3.75 metres wide and 15 to 18 metres long, but with different interiors. The modules sit roughly side-by-side, but their interior layouts interlock to form flats of various sizes and configurations. Construction began in autumn of 2012. The foundation, basement and first floor were conventionally built, while the steel-framed modules were fabricated in the state of Pennsylvania.
Brown estimates he saved about six months of conventional construction time and 20 per cent of the US$7 million construction costs. The overall cost was US$13 million, including land and other expenses.
Among New York's next modular moves is a Manhattan "micro-unit" apartment building plan that won a city contest last year. And the pioneering 363-unit B2 is under construction as the first residential tower in the massive Atlantic Yards development.
Modular isn't magic for every project, said Tom Hanrahan, the dean of architecture at New York's Pratt Institute, but it has its place where "you can repeat it and stack it".