What is the difference between a commercial ADU and a non-residential ADU?
A commercial ADU converts commercial or mixed-use space into a legal residential dwelling unit with a kitchen, bathroom, and permanent sleeping area. A non-residential ADU is an accessory structure — usually on a residential lot — that is permitted as a legal building but used for something other than a full dwelling: an office, studio, workshop, gym, or guest quarters without a full kitchen. The two categories share a name but sit in very different regulatory frameworks, which is why we treat them as two distinct service paths.
Can I convert part of my existing business into housing?
In many California jurisdictions, yes. Under SB 6, residential use is permitted on commercially zoned land without a full zone change. AB 2011 allows by-right residential on commercial corridors, though it comes with affordability requirements. Your specific building, lot, and jurisdiction determine what is possible. We run a zoning and entitlement analysis for every address before quoting a project.
Do I need a public hearing to convert commercial space to residential?
It depends on the jurisdiction and the project. Some conversions qualify for ministerial (by-right) approval under AB 2011 or a local adaptive-reuse program. Others require a public hearing for a conditional use permit or zone variance. In our experience, roughly 60% of the conversions we take on avoid a public hearing entirely. We tell you upfront whether your specific project will need one, and we prepare the hearing package if it does.
How many units can I build in a commercial building?
It depends on the building's square footage, the zoning designation, and the jurisdiction's density rules. Under AB 2011, density is governed by the underlying zoning and by affordability requirements. As a practical rule of thumb, a 2,000 sq ft conversion typically yields two to four studio or one-bedroom units. We will model unit count options during feasibility so you can see the trade-off between unit size and total unit count.
Does a non-residential ADU count against my property's ADU unit cap?
No. A legally permitted non-residential accessory structure is not a dwelling unit and does not count against the maximum number of dwelling units permitted on a residential lot. This means a homeowner can have both a full ADU and a separate non-residential accessory structure — an office, studio, or workshop — on the same property, subject to local lot coverage and setback rules.
Can a non-residential ADU later be converted to a full ADU?
Yes, if it is built to the structural and life-safety standard of a dwelling from the start. We design non-residential accessory structures with future conversion in mind: adequate ceiling height, egress windows in the right positions, and utilities roughed in for a future kitchen and bathroom. This costs slightly more upfront but saves substantial expense if you decide to convert later.
What if my commercial building is in a historic district?
Historic districts add complexity but do not automatically disqualify a conversion. Interior conversions are often permitted with minimal exterior changes, and many historic districts have design-review processes that are manageable if the exterior is preserved. We have worked on projects in historic districts in Los Angeles, San Francisco, and Pasadena. We handle the design-review submission and coordinate with your jurisdiction's preservation staff as part of the project.
Do you work outside of California?
No. We are licensed in California only, and we work exclusively within the state. The regulatory landscape, seismic code, and ADU laws we know well are all California-specific. If you have a project in another state, we can refer you to contractors we trust in a few markets, but we do not build outside California.
