San Diego’s ADU Bonus Program helped reshape the conversation around small-scale housing production in California.
For several years, the program became one of the most aggressive local housing incentive systems in the state, allowing developers and property owners to dramatically increase density through deed-restricted affordable ADUs.
But the program is changing.
And after reviewing the City’s 2026 Land Development Code Update materials, public comments, and recent ordinance changes, one thing is becoming increasingly clear:
San Diego is not eliminating the ADU Bonus Program.
It is recalibrating it.
The ADU Home Density Bonus Program created opportunities for:
In Transit Priority Areas (TPAs), the program became especially powerful because there was effectively no hard cap on total ADU count under the original framework.
The result was a wave of:
The program quickly became one of the most talked-about housing tools in the city.
The same flexibility that made the program powerful also generated backlash.
Public concern increasingly focused on:
By 2025, City Council hearings surrounding the program drew thousands of public comments.
That pressure ultimately led to a series of reforms and implementation changes.
The City has already introduced several major modifications to the ADU Bonus Program framework, including:
The revised program now limits ADU counts in many situations based on lot size:
That represents a major shift away from the earlier perception of effectively unlimited density potential in some areas.
The City also introduced a new Community Enhancement Fee tied to bonus and affordable ADUs.
The fee is calculated based on the gross floor area of bonus and affordable ADUs.
Importantly:
the City’s current public materials reference the methodology and applicability of the fee, but the exact per-square-foot fee structure appears to still be evolving administratively and through implementation guidance.
However, the broader policy direction is very clear:
the City is attempting to capture infrastructure and community benefit contributions from projects utilizing enhanced density incentives.
The City also added:
These changes reflect growing concern around infrastructure and emergency access in higher-density infill environments.
The most important takeaway is this:
The City is not abandoning the ADU Bonus Program.
It is trying to transition the program from:
“experimental hyper-density tool”
to:
“politically sustainable long-term housing framework.”
That distinction matters.
The City still clearly views ADUs as an important part of:
But the implementation environment is becoming more calibrated and operationally structured.
Developers are now paying close attention to:
The entitlement strategy around ADU Bonus projects is becoming significantly more nuanced than it was several years ago.
And increasingly, the most successful projects are likely to be:
San Diego’s ADU Bonus Program helped redefine what small-scale housing production could look like in California.
But the program is now entering a new phase.
Not elimination.
Not rollback.
Evolution.
And for developers, understanding that transition may become just as important as understanding the density incentives themselves.
