Australia has a housing supply crisis – with rents through the roof and a lack of homes for a massive wave of migrants — yet building businesses are toppling in numbers not seen for a decade.

Four Corners follows the supply chain pressures that are driving some builders to the brink and asks why the industry's profit margins are so slim.

Alongside building companies undone by tough times, there are also those that flout the law, racking up debt, liquidating and reincarnating leaving countless victims in their wake.

This is a story about a broken industry.