Single-stair building code reforms, once a niche subject of mere speculation by disgruntled architects, have become law in several states and have positive legislative momentum in several others. Single-stair reforms allow construction of new residential buildings, typically above three stories, with only one exit stairway. These reforms have quickly become part of the playbook that housing supply reformers are running across the country. Bills in several states are moving these reforms one step closer to implementation, but opponents of single-stair legalization still have opportunities to derail them.
