There can be other regulations for single stair that can prevent this. Limiting number of units per floor or providing balconies that are ladder accessible. h

There can be other regulations for single stair that can prevent this. Limiting number of units per floor or providing balconies that are ladder accessible. https://www.treehugger.com/single-stair-buildings-united-states-5197036 https://www.treehugger.com/single-stair-buildings-united-sta...