ADU guide
Prefab ADUs and ADU Kits
A prefabricated unit, a kit assembled on site, and a garage conversion involve different scopes. Compare the whole project, including site work and approvals, instead of comparing a product price with a completed conversion.
Requirements depend on your property and the agency reviewing it. Confirm current details with that agency before finalizing plans.
Questions to consider
- Ask what the manufacturer supplies and what is assembled or completed on site
- Compare site preparation, foundation, utility connections, and restoration
- Confirm the permit and inspection path with the reviewing agency
- Ask for delivery, installation, and exclusions in writing
Official resources
Common questions
Does a prefab unit skip the local approval process?
Do not assume it does. Ask the reviewing agency which site approvals and inspections apply to the proposed product and location.
Is prefab always cheaper than conversion?
No general comparison fits every property. Request complete proposals for the site and the work each option requires.
San Diego County projects
Ready to find out what your garage can become?
Tell us about the space and we can connect you with an independent local professional.