A closer look

A multibillion-dollar commercial complex can be brought to its knees by one elderly person who really likes their porch. 'Nail houses' are properties where the owner fiercely refuses to sell to developers, forcing massive shopping malls or highways to be built awkwardly wrapping around a tiny, dilapidated house. It’s a terrifying game of economic chicken where the homeowner holds a corporate giant hostage for an astronomical payout.