Carmichael's Accessory Structures: The Rules That Matter

Every city handles accessory structures a little differently. In Carmichael, California, there are 4 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Tiny Homes

Carmichael is an unincorporated CDP in Sacramento County, so tiny home regulation comes from the Sacramento County Zoning Code (Title 5) and the 2022 California Building Code, not a city ordinance. A permanent-foundation tiny home that meets the California Residential Code can qualify as an Accessory Dwelling Unit under Sacramento County Zoning Code Section 5.4.5.F. Tiny homes on wheels (THOWs) are recreational vehicles and cannot be occupied as a permanent residence on a residential lot.

Key details: Governing Authority: Sacramento County (unincorporated). Typical Zoning: RD-5 / RD-7 residential. ADU Standard: Zoning Code § 5.4.5.F. Max Detached ADU: 850–1,000 sq ft. Min Habitable Room: 120 sq ft (CRC R304).

Occupying a tiny home on wheels as a permanent residence on a Carmichael residential lot violates Sacramento County Zoning Code and Title 22 RV-occupancy limits, exposing the owner to code-enforcement citations, daily fines, and an order to vacate or remove the unit. Constructing a foundation tiny home ADU without permits triggers stop-work orders, after-the-fact permit fees, and potential demolition for non-conforming work.

Shed Rules

Detached storage sheds in Carmichael under 120 square feet and 9 feet in height are permit-exempt under Sacramento County Code Title 16. Sheds may be placed on the property line if no plumbing or electrical and under that 120/9 ft threshold.

Key details: Permit Exempt: ≤120 sqft + ≤9 ft height + no utilities. On Property Line: Allowed if permit-exempt. Standard Front Setback: 20 ft. Standard Side/Rear Setback: 3 ft.

Building a non-exempt shed without a permit: stop-work order plus double permit fees on after-the-fact permit. Encroachment into easements: removal order under SCC §16.18 with administrative penalties $100/$200/$500.

Carmichael is more permissive than most cities when it comes to shed rules. That said, there are still limits.

Garage Conversions

Converting a Carmichael garage to a JADU (Junior ADU) or living space requires Sacramento County Building Permits under SCC Title 16 and CRC compliance. State law (AB 671, AB 68) facilitates JADU conversions of existing garages, but on-site parking replacement may still apply for the primary dwelling.

Key details: JADU Statute: CA Gov't Code §65852.22. JADU Size: Up to 500 sqft. Owner-Occupancy: Required (JADU only). Replacement Parking: Not required if within 1/2 mi transit.

Unpermitted garage conversion: stop-work order, after-the-fact permit at double fee. Unpermitted conversions cannot be legally rented and may trigger insurance disclaimer at any fire or injury claim.

ADU Rules

Carmichael ADUs follow Sacramento County Zoning Code ADU standards (updated July 2024) - 4 ft setbacks from side/rear, 16 ft max height detached (25 ft attached), max 1 ADU + 1 JADU per single-family lot. The County publishes free Shelf-Ready ADU plans for unincorporated parcels.

Key details: Min Setbacks: 4 ft side/rear. Detached Max Height: 16 ft. Attached Max Height: 25 ft. Max ADU Size: 800 sqft (or 50% of primary). Max JADU Size: 500 sqft.

Building without permits: stop-work order, after-the-fact permit at double fee. Renting an unpermitted ADU also disqualifies the property from STR/long-term rental compliance. Persistent unpermitted construction: misdemeanor under SCC §16.04.

The Bottom Line

Carmichael's accessory structures rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Carmichael is broadly strict or permissive.

All of the above reflects Carmichael's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.