New research addresses a question that's incredibly difficult to answer and may hold clues to solving the affordable-housing puzzle.
San Francisco, Seattle and Dublin show what happens when a city becomes a global hotspot for tech jobs without planning to accommodate growth and change.
Between the two world wars, Vienna undertook one of the most ambitious public housing programmes ever. That effort is still credited with maintaining affordability a century later.
France is experimenting with rent controls to better protect inhabitants and make its housing markets more sustainable.
Much depends on control of the Senate, but the administration may have a few tools of its own to encourage cities to change their land-use rules.
Covid-19 has amplified the structural problems with these tiny apartments as daily life spills out into the street.
Mayor Ada Colau says her city's ongoing work to create affordable housing and safer streets provided a foundation for its crisis response.
A group of housing advocates are hoping a new referendum will transfer ownership of a quarter of a million apartments to the people.
Programmes that match seniors with students increase the supply of affordable housing while decreasing both living costs and social isolation.
Developers of projects throughout the city have clashed with neighbourhood activists who fear that rezoning will exacerbate gentrification trends already under way.
The demand for safe and stable homes is growing around the world, as are the risks of continuing carbon-intensive forms of construction. But there are ideas to meet housing and climate needs simultaneously.