San Diego Expands Density Bonus, Unlocking Thousands of Affordable Housing Units

San Diego's City Council voted 6-3 on Tuesday to expand the city's density bonus program, removing height caps on residential projects that include a minimum of 20 percent affordable units in transit-adjacent neighborhoods. The policy change removes previous restrictions that capped buildings at 85 feet in most areas, allowing developers to propose taller structures if they commit to permanently affordable housing.

For San Diego residents facing one of California's steepest housing costs, this shift addresses a persistent gap between housing supply and demand. The median rent for a one-bedroom apartment in the city sits at $2,180 per month, according to the most recent San Diego Housing Commission data. The council's action removes a regulatory barrier that housing advocates and developers have pointed to as a constraint on residential construction. The policy applies to sites within half a mile of major transit corridors, including the trolley system and high-frequency bus routes.

What Changes for San Diego Neighborhoods

Under the new rules, developers proposing projects on sites like those near the Mid-City Rapid Bus Line on University Avenue or within walking distance of the Green Line trolley corridor can now request waivers on the 85-foot height limit. In exchange, they must designate at least 20 percent of units as affordable to households earning 60 percent of area median income, projected at roughly $1,200 per month for a one-bedroom unit. The affordability requirement locks in rents for 55 years, binding future owners to the same terms.

The council heard testimony from property owners along corridors including North Park, Mid-City, and the College Area. A representative from the San Diego Housing Commission told the council that removing height restrictions on transit-adjacent sites could enable roughly 2,500 additional residential units over the next decade, though that projection depends on market conditions and developer interest. Currently, about 130,000 San Diego households pay more than 30 percent of income on rent, the standard threshold for housing cost burden, according to city planning documents reviewed ahead of Tuesday's vote.

Implementation and Next Steps

The policy takes effect immediately, though individual projects still require separate approval from the development review board. The city planning department will update its zoning guidelines within 60 days to clarify which neighborhoods qualify as transit-adjacent and what density levels apply in each area. Developers can submit projects under the new rules starting August 15.

Council members who voted against the measure raised concerns about neighborhood character and the pace of change in older residential areas. Those supporting the expansion cited the housing crisis and the city's obligation to approve more residential capacity under state housing law, which requires San Diego to plan for 179,000 new homes by 2030. City staff estimate the density bonus change could contribute roughly 2,500 units of that target, though the vast majority of required housing will still come from other zoning changes and market-rate development.

The Community Planners Committee, a group of neighborhood representatives, will review the new guidelines before they take final effect. City council members directed staff to report back in 12 months on how many projects have been approved, how many affordable units have been created, and whether the program is meeting affordability targets in lower-income neighborhoods.