Merced, CA Accessory Structures: Garage Conversions (2026)
Garage conversion rules in Merced, CA, sometimes called garage-to-ADU or accessory living unit conversions, govern permits, ceiling height, egress, and parking replacement.
Key Facts
- Garage conversion type
- "Converted" ADU
- Review process
- ministerial, no discretionary review
- Multi-family conversion cap
- 25% of total units
- Displaced parking
- not required to be replaced
- Governing section
- MMC 20.42.030(B)(3)(a)
Summary
Merced allows an attached garage to be converted into an accessory dwelling unit through ministerial approval, but converted-ADU garages on multi-family parcels are capped at 25 percent of the total dwelling units, and displaced parking never has to be replaced.
3.Converted. An ADU may be located within areas converted to habitable space that complies with the California Building Code for a dwelling, such as:a.An area within an existing single-family dwelling (e.g. an attached garage); orb.An existing accessory structure (e.g. a detached garaged or pool house) located on the same parcel as the single-family dwelling; orc.Portions of existing multi-family structures that are not used as livable space, including, but not limited to, storage rooms, boiler rooms, passageways, attics, basements, or garages.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 85 - 1-26).
Full Breakdown
an attached garage)" that complies with the California Building Code for a dwelling; the same subsection also covers converting a detached garage or pool house under (B)(3)(b). 020(A) requires the city to process the application ministerially, meaning it must issue a building permit without discretionary review once the application meets the chapter's standards, and correcting unrelated nonconforming zoning conditions cannot be made a condition of that approval. 030(C)(2)(a) limits converted ADUs to no more than 25 percent of the total number of dwelling units on that parcel.
030(H)(2): when all or part of a garage, carport, or other parking structure is converted or demolished to build an ADU, the displaced parking spaces are not required to be replaced. 030(F)(3).
Violations & Fines
Converting a garage to habitable space without a building permit, or without meeting the California Building Code standards for a dwelling referenced in Section 20.42.030(B)(3), is a code violation subject to correction by the building division and can trigger red-tag enforcement; uncorrected conditions can be treated as a public nuisance under Section 1.12.080 and are punishable as a misdemeanor or infraction under the general penalty scale in Section 1.12.020.
Frequently Asked Questions
Can I convert my attached garage into a living unit in Merced?
Do I have to replace the parking spot I lose when converting my garage?
How many garages can be converted on an apartment property?
Sources & Official References
Other rules in Merced
California rules heatmap·Compare Merced to another location·View the California accessory structures overview
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