An ADU can be a smart way to put an apartment property's unused space to work. It can also be a very expensive way to discover that the space wasn't really unused.
When I look at a possible ADU project, I start with two questions: Where does the new unit actually go? And what does the owner—or the existing tenant—give up to put it there?
California's SB 1211 expanded the state-law path for detached ADUs on a lot with an existing multifamily building. The statutory ceiling is eight detached ADUs, but no more than the number of existing units. A seven-unit building therefore may have a seven-unit legal ceiling. That is not a promise that seven units fit, can be financed, or should be built. California HCD's March 2026 ADU Handbook describes the rule; the actual site still needs design and permit review.
An owner of a seven-unit building may hear “up to seven detached ADUs” and see seven new rent checks. The statute sets a possible ceiling, not a site plan. Usable area, access, utilities, existing improvements and cost decide whether even one addition makes investment sense. Some seven-unit properties simply do not have the land for that kind of expansion.
A garage conversion is a different question. At 11418 Victory Boulevard, the possibility is worth studying if the existing garage space and site conditions support it. The offering memorandum establishes four existing apartments, but it does not establish a garage count, an approved ADU plan, or the tenants' parking rights. Before anyone underwrites a new unit, I would want to see the plans, leases, actual parking use, and what would happen to each tenant who currently relies on that space.
Under California's ADU guidance, a local agency generally cannot require replacement of off-street parking lost when a garage is converted or demolished for an ADU. That does not mean the spaces have no value—or that an owner can ignore a tenant's arrangement. Can the design preserve parking? Is there another usable space? What would the tenant actually agree to? Any proposed change should be reviewed against the lease and applicable local law with qualified counsel before making promises or moving ahead.
Then run the real math. Add design, permits, utility upgrades, construction, financing, carry, and the cost of disruption. Subtract any income or value lost from the existing property. Compare the result with renovating the existing apartments, holding as-is, or selling to a buyer better positioned to develop. The goal is not the biggest theoretical door count. It is the strongest return on the equity and risk the owner puts to work.
If you have a multifamily property with underused land or a garage you are thinking about converting, send me the address and tell me how the space is used today. We can begin with the investment case, then bring in the architect, permitting team, and legal or tax specialists needed to test it.
General information, not a property-specific entitlement, construction, tax or legal opinion. Verify current law, lease obligations, and any proposed ADU plan with the applicable jurisdiction and qualified specialists.