This interview first appeared in Assembly,  a new magazine that ArchDaily contributor Sarah Wesseler is working on.

According to the United Nations, 1 billion people currently live in slums. Over the next two decades, this figure is expected to double. In recent years, slums (also known, more neutrally, as informal settlements) have increasingly attracted positive attention from academics and design professionals impressed by their efficient deployment of scarce resources, community-based orientation, and entrepreneurial vitality. Architect Rem Koolhaas celebrated the slums of Nigeria in his 2008 book Lagos: How It Works, while Teddy Cruz has become well known for his work with shantytowns on the U.S.-Mexico border. And no less a traditionalist than design enthusiast Prince Charles, prone to harsh public attacks on contemporary architecture, has championed Dharavi, the Mumbai neighborhood portrayed in Slumdog Millionaire, praising its “underlying, intuitive ‘grammar of design’” in a 2009 speech.

Detractors claim that these and similar attempts to examine the slums through the lens of design romanticize poverty and ignore the sociopolitical forces responsible for their creation and proliferation. However, although some projects involving informal design are doubtless better conceived than others, in general there can be no real question that it is appropriate for architects and planners to concern themselves with a phenomenon fundamentally tied to design-related issues such as land use, infrastructure, and materials. And given the failure of so many top-down modernist schemes for housing the poor over the past century, it is logical for the profession to turn its attention to a housing model which continues to mushroom organically around the globe: the shantytown.

An ongoing research project being carried out by 26’10 South Architects, a young South African firm headed by husband-and-wife architects Thorsten Deckler and Anne Graupner, provides an interesting look into this type of work. The couple have spent the past year and a half studying the spatial dynamics of Diepsloot, a Johannesburg suburb created in 1994 to house the poor. Today, approximately three-quarters of Diepsloot’s residents live in slums.

The interview after the break.