The Vancouver Sun just reported on new social housing built in the Downtown Eastside out of shipping containers. And guess what, it is sustainable, it integrates the three imperatives--ecological (the containers contain steel that would normally have been too expensive that are also recycled), economic (hard costs were about $82,000 a unit compared with $220,000 a unit for conventional) and social (provides equitable access to affordable housing for lower incomes and diverse social capital). The Alexander Street development features two different levels of non-market housing — six units at $375 a month, and six whose rents will be determined by annual income. Renters of the income-related units can earn a maximum of $34,000 a year and pay a maximum monthly rental of $850. A three-way win all around.