As of March 8, 2025, the City of Boulder has officially adopted new zoning updates through the “Family-Friendly Vibrant Neighborhoods” ordinance. This change opens up new residential possibilities across several neighborhoods, especially for property owners near public transportation routes.

Whether you’re buying, selling, or investing, this update shifts the landscape and offers new opportunities to use or market property differently.

What Changed?

This ordinance focuses on updating zoning regulations in areas that were once limited to single-family homes, giving property owners more options for housing types and layout. The city’s goal is to create more housing variety in well-connected neighborhoods, without changing the overall character of the area.

Here’s what’s now in effect:

RR-1, RR-2, RL-1 zones: Any property within 350 feet of a designated bus corridor can now support two homes on one lot—either a duplex or two detached units.
RMX-1 zones: The land requirement per unit has dropped from 6,000 to 2,500 square feet. More homes can now be built on a single lot, as long as existing structures aren’t removed illegally.
RM-1 zones: The required open space per home has been reduced from 3,000 to 2,000 square feet, making it possible to increase density without needing a larger parcel.

These changes come with design safeguards—setbacks, height limits, floor area ratios, and building coverage still apply—but the zoning is far more flexible than it was a few months ago.

What It Means for Homeowners and Sellers

If you own a home in one of the affected zoning areas, especially near a transit route, your property may now qualify for an additional dwelling unit. That opens up the possibility of building a second unit, reconfiguring your property for multi-generational use, or simply marketing it as a more versatile asset.

For sellers, this could mean increased interest from buyers or developers looking for properties with long-term potential. It’s a smart time to reassess what your lot could be worth under the new zoning.

What It Means for Buyers

If you’re in the market, these changes mean more housing types will begin to surface in neighborhoods that were previously limited to single-family homes. Over time, this should lead to a broader range of options—from smaller homes to duplexes—particularly in areas close to services, schools, and public transportation.

This kind of flexibility makes it easier to find a home that suits your needs without having to sacrifice location or spend at the top of the market.

What It Means for Investors

For investors and builders, the door has opened to increase unit count on lots that were previously restricted. In areas like RMX-1, where density limits have shifted, this can dramatically change what’s feasible on smaller parcels.

Projects that may not have penciled out under the old rules might now be viable with added units, shorter permitting processes, and reduced land requirements. These updates also favor infill development—maximizing the use of existing properties in established neighborhoods.

A Thoughtful Reminder

All real estate activity must comply with Fair Housing Law. These changes are about expanding opportunity, not creating exclusivity. It’s important that all buyers and renters—regardless of ability, background, or household makeup—are treated fairly in every transaction. Housing should be inclusive and accessible to all.

Final Thoughts

Boulder’s zoning code now supports a more flexible, diverse housing environment. Whether you're evaluating a remodel, listing your home, or planning a new investment, these changes present timely opportunities. The key is understanding where your property fits within the updated map—and how to position it strategically moving forward.

If you want a clear breakdown of how these zoning changes affect your specific property, I’d be happy to take a look and talk options.