🏡 Unlocking the Bonus Unit: How St. Louis’s Zoning Makeover Could Mean Big Gains for Homeowners & Investors

Unlocking ADUs. The city of St Louis changes zoning ordinances to allow them.

For the first time in decades, the city of St. Louis is rewriting its zoning playbook — and this change could quietly reshape how we live, build, and invest in the Gateway City.

This isn’t just bureaucratic shuffle. It might be a property-value accelerator in plain sight.

What’s Changing

In July 2025, the Board of Aldermen passed Board Bill 60 (BB 60), an ordinance effective September 29, 2025, which amends the Zoning Code to define, permit, and regulate accessory dwelling units (ADUs). Specifically, it allows both attached and detached ADUs by-right in all residential zones in the City — no Continue Reading →