The Center for Building in North America has been aggressively pushing for these single stairwell reforms all over the country. Stephen Smith, writer of that report, is the founder of that group as well as the founder of Quantierra a real estate tech company.

The real estate industry is in huge support of this particular reform, and they stand to massively profit from it, but the people who are strongly against it include The International Association of Fire Fighters, the National Association of State Fire Marshals, The International Association of Fire Chiefs, and The National Fallen Firefighters Foundation. These are the people who are most informed about the dangers and risks involved and in what safety measures are required to save lives and fight building fires effectively.

The report itself does make some very good arguments like how much safer modern construction has become, and also some rather weak ones (for example it ignores the poor quality of data on fire and smoke related fatalities in the US, as well as important differences between the US and Europe) and I'm not even saying that single stairwell buildings can't ever be made safely, but if safety really wasn't a problem we wouldn't see a lack of support from firefighters who are the actual experts in this space. Until they are convinced of the safety of these reforms real estate developers are going to have a hard time convincing me.

Here are a couple of their objections:

https://www.iaff.org/wp-content/uploads/2024/06/JointStateme...

https://cityclerk.lacity.org/onlinedocs/2025/25-0247_pc_IAFF...