AB 1061 – SB 9 in Historic Zones
AB 1061 allows SB 9 lot splits in historic districts, as long as no more than 25% of a historic building’s exterior walls are demolished. It’s a careful balance that allows for gentle infill development without erasing the architectural character of established neighborhoods.
This law addresses one of the most common objections to SB 9 implementation: that historic districts would be overrun by new construction. AB 1061 responds thoughtfully—preserving neighborhood charm while unlocking new housing potential.
What This Means for You
If you're planning to:
Build a custom home on a lot in or near a historic zone,
Add an ADU on your property,
Or split your lot under SB 9,
AB 1061 opens new doors—but also adds new constraints.
Here's what to consider:
You can now split your lot or build a second unit even in a historic zone, as long as you're not removing more than 25% of a historically designated structure’s exterior.
If your home isn’t a designated historic resource, but is in a historic district, you may still be subject to design review or local ordinances.
Cities may still try to impose additional rules—so it’s crucial to understand how your local preservation commission interprets and implements AB 1061.
How We Can Help
Navigating overlapping rules—state housing laws, local preservation codes, and zoning regulations—can be overwhelming. That’s where we come in.
Expert feasibility analysis: We’ll assess your property and let you know whether AB 1061 applies, and how much flexibility you have to build, remodel, or split.
Historic design sensitivity: Our team has experience working in historic districts. We can help you develop designs that honor the character of your neighborhood and meet modern needs.
Complete project guidance: From permitting and design to construction, we manage the process from start to finish—with transparency, care, and expertise.
Whether you’re hoping to house extended family, create rental income, or build a smaller home on your lot, we’ll help you do it right—and do it legally.
Start with a Free Consultation
Schedule your free call today and get expert advice on building or remodeling in a historic zone under AB 1061. We’ll help you preserve what matters—while building what’s next.
