El Dorado County ADU Rules, Setbacks & Permits
Updated June 12, 2026 · Upside ADU
Quick answer
El Dorado County ADUs follow California's statewide rules: a 4 ft side/rear setback, detached units up to 1,200 sq ft, a 16 ft height limit, no added parking, and a 60-day permit clock. El Dorado County ADUs (El Dorado Hills, Cameron Park, Placerville) are reviewed mostly by the El Dorado County Planning & Building Department rather than a city counter. Larger lots are common, but so are septic, well, grading, and gated-community design review.
Who permits your ADU in El Dorado County?
El Dorado County spans several jurisdictions, and the office that reviews your ADU depends on your address. We handle the submittal and inspections for whichever one applies.
El Dorado County ADU permitting authority by city
| City | Permitting authority | ADU pages |
|---|---|---|
| El Dorado Hills | El Dorado County Planning & Building Department | builder · cost |
| Cameron Park | El Dorado County Planning & Building Department | builder · cost |
| Placerville | City of Placerville / El Dorado County Building Department | builder · cost |
What are the ADU size, setback, and height limits?
These are set by California state law and apply across El Dorado County — a city cannot make them more restrictive:
- Detached ADU: up to 1,200 sq ft
- Side & rear setback: 4 ft minimum (state floor)
- Height: 16 ft, or up to 25 ft within ½ mile of major transit
- Parking: none required for a garage conversion
- Impact fees: waived for units under 750 sq ft
- Owner-occupancy: none for standard ADUs permitted after Jan 1, 2020 (JADUs excepted)
What's different about building in El Dorado County?
Many El Dorado County parcels are on septic, so capacity is verified early. Gated communities (Serrano, Blackstone) add HOA design review; Gold Country and downtown Placerville lots can involve slope and historic-district considerations.
See also:Sacramento-region ADU rules guide · California ADU law in 2026 · all counties
Ready to see if your El Dorado County lot qualifies?
We confirm the current rules for your specific parcel — setbacks, height, and permit office — during a free feasibility check, no commitment required.
Orientation only, not a permit determination — El Dorado County jurisdictions update ordinances as state law changes. We confirm the current rules for your specific lot during a free feasibility check.
Sources & references
- Accessory Dwelling Units — official guidance — California Dept. of Housing & Community Development (HCD)
- California ADU law (SB 1211, AB 1033) — California Legislative Information