Unincorporated El Dorado County, California requires building permits for new construction, major renovations, electrical and plumbing work, and structural changes; work cannot begin before approval1. Title 130 zoning also applies across the unincorporated county, subject to listed exemptions2. Septic permits come from the county's Environmental Management Department, not the Building Division, and require a percolation test and site evaluation first345.
At a glance
- Building permit
- Required for regulated construction and alterations, with limited exceptions1
- Zoning
- Countywide under Title 130; lot sizes and setbacks vary by district26
- Septic permit
- County-issued after a percolation test and site evaluation34
- Owner-builder
- Available, but the owner accepts legal and financial responsibility7
- Tiny home
- Under 400 sq ft on a permanent foundation, built to Title 24 code8
- Accessory dwelling
- Allowed by right in residential zones, subject to parcel and project rules9
- RV living
- Not allowed in residential zones; campgrounds and RV parks have a 30-day stay limit10
- Well permit
- Required for construction, destruction, deepening or repair of a well11
Who to call
Building permits
El Dorado County Building Division
Building permits and inspections for unincorporated El Dorado County; a separate South Lake Tahoe office covers the Tahoe Basin
2850 Fairlane Court, Placerville, CA 95667
Building permits
El Dorado County Building Division
The county's own explanation of the building-permit process, including permit expiration
Planning & zoning
El Dorado County Planning Division
Zoning, rezoning, subdivisions and site-plan review for unincorporated El Dorado County
Building C, 2850 Fairlane Court, Placerville, CA 95667
Septic permits
El Dorado County Environmental Management Department
Septic (private sewage disposal) permits, food-facility permits and the county's Water Well Program for unincorporated El Dorado County
2850 Fairlane Court, Building C, Placerville, CA 95667
Contact details are copied from each office’s official page and were checked against it on October 10, 2026.
Off-grid gear
Going off-grid in El Dorado County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in El Dorado County, California?
Yes. Unincorporated El Dorado County requires building permits for new construction, major renovations, electrical and plumbing work, and structural changes, and work cannot begin before approval1. Required inspections depend on project scope and can include foundation, framing, plumbing, electrical, sheetrock and final inspections; required grading work must be cleared before building inspections begin12. A covered building, trailer, coach or manufactured housing unit cannot be occupied until the final inspection is approved and a Certificate of Occupancy is issued; required utilities, road work and fire-district approval must also be complete13. Applications dated in 2026 or later use the 2025 California Building Standards Code, while projects initiated earlier remain under the previous code during plan check and inspections14. The county publishes fee schedules, collects half the building permit fee and the full planning fee at application, and collects the balance and other agency fees at issuance15.
Who is the El Dorado County building department, and how do you reach them?
El Dorado County's Building Division issues building permits and conducts inspections for regulated work in the unincorporated county11216. Reach the Placerville office at 2850 Fairlane Court, Placerville, CA 95667, phone (530) 621-5315, with an alternate line at (530) 621-5377 for inspections16. Walk-ins run 8 am to noon Monday through Friday except Wednesday, when walk-in hours shift to 9 am to noon, with appointments only from 1 to 4 pm16. For land in the Lake Tahoe Basin, use the South Lake Tahoe office at 924 B Emerald Bay Road, South Lake Tahoe, CA 96150, phone (530) 573-333016. The Planning Division handles zoning, rezoning and subdivision review and can be reached at 530-621-53551718.
Does El Dorado County have zoning?
Yes. El Dorado County's Title 130 zoning ordinance applies throughout the unincorporated county except listed federal, state, tribal and utility-related exemptions219. Incorporated cities use separate municipal zoning, so Title 130 does not govern land inside city limits20. Residential lot sizes, setbacks and building heights are district-specific; additional agricultural, fire-safe, timber, wetland and riparian setbacks can also apply62122. Meyers Area Plan parcels in the Tahoe Basin also have TRPA-based land-coverage rules, including special Town Center provisions23. An accessory dwelling unit or junior accessory dwelling unit is allowed by right in qualifying residential zones but remains subject to site, building, septic and fire rules9. The ordinance says dwelling area in mixed-use projects must comply with the building code but gives no numeric minimum there; ask Planning about the rule for the parcel and project2417.
How do septic permits work in El Dorado County?
Septic systems in El Dorado County go through the county's Environmental Management Department under its Private Sewage Disposal System Ordinance, not a separate state office34. You need a percolation test before a site evaluation report can be completed, then a site approval report, before the county will accept your sewage-disposal-system permit application; the permit is issued only to the owner or an authorized representative4. Reach Environmental Management's Placerville office at 2850 Fairlane Court, Building C, phone (530) 621-5300, or the South Lake Tahoe office at 924 B Emerald Bay Rd., phone (530) 573-345025. After the permit is approved, a Qualified Professional performs an open-trench inspection on every system, and the county's Environmental Management staff perform the final inspection within two weeks of that inspection26. Statewide, California's Water Boards oversee the policy that local programs like El Dorado's must follow27. Soils are a serious limiting factor here: well under 1% of El Dorado County's soils rate free of severe limits for a conventional drain field in the USDA soil survey, in a county where only about 12% of the land sits at a gentle enough slope to make site work easy, so expect the county to lean on special-design systems in a lot of places2829.
Can you live in an RV or tiny home on your land in El Dorado County?
Not in a residential zone as ordinary camping. El Dorado County's permissive zoning ordinance does not allow camping by right or by conditional use permit in any residential zone10. Selected agricultural and recreational zones can allow a campground with a conditional use permit, but campground and RV-park stays are limited to 30 days and Environmental Health must find adequate water or septic capacity10. A genuine tiny home is different: the county describes tiny homes under 400 square feet, built on a permanent foundation and meeting Title 24 building codes, as suited to long-term housing, subject to the same zoning, building, fire and septic requirements as any other home8. A manufactured home can also be a permanent primary or accessory dwelling by right in a zone that permits a detached single-family home, once it meets the county's foundation, utility, fire and septic standards30.
How do you build a home in El Dorado County, step by step?
- Confirm the parcel's zoning district, minimum lot size, setbacks, height limit and allowed use with the Planning Division at 530-621-53551762122.
- Start septic review early: obtain a percolation test, site evaluation and site approval report before Environmental Management, (530) 621-5300, accepts the sewage-disposal permit application425.
- Apply through Environmental Management for any well construction, destruction, deepening or repair11. A new driveway connecting to a county-maintained road needs an encroachment permit31.
- Submit a complete building permit application to the Building Division, (530) 621-5315; the county requires the listed plans and supporting approvals before plan check begins1631. An owner-builder must complete the county's owner-builder paperwork and remains responsible for managing and completing the work7.
- Schedule the inspections required by the project's scope, including any grading clearance before building inspections12.
- Complete utilities, road work and fire-district approval, then obtain final inspection approval and any required Certificate of Occupancy before moving in13.
What to check before you buy land in El Dorado County
Zoning and lot size: ask the Planning Division which district covers the parcel because lot size, setbacks and height limits vary by district, and a proposed subdivision must also satisfy parcel configuration, utilities, fire-safe and road standards1762118. Soils: well under 1% of El Dorado County's soils rate free of severe limits for a conventional septic drain field, and only about 12% of the county's land has a gentle slope, so budget for site-specific evaluation2829. Agricultural grading is not broadly permit-free: narrow exemptions cover conversion of less than one acre outside the Tahoe Basin and qualifying practices that use approved best management practices without substantially changing natural contours3233. Flood status is parcel-specific34. A well needs a county permit for construction, destruction, deepening or repair11. El Dorado County's typical effective property tax rate is about 0.7%, with a median annual bill near $4,5103536.
Watch-outs
- El Dorado County runs a separate South Lake Tahoe office for the Tahoe Basin, and permits there follow the Tahoe Regional Planning Agency's own rules, including its own permit-expiration timeline instead of the county's two-year limit1637.
- No residential zone in El Dorado County allows camping; the 30-day limit applies to stays in approved campgrounds and RV parks, not to RV living on residential land10.
- The mixed-use rule gives no numeric minimum dwelling area and instead requires compliance with the building code; ask the Planning Division what applies to your specific parcel and project2417.
Sources
- What's Required and How to Submit:, quoted and re-checked
- El Dorado County Zoning Ordinance (2026 county census)
- Liquid Waste Disposal - El Dorado County (2026 county census)
- Private Sewage Disposal System Ordinance - El Dorado County, quoted and re-checked
- Liquid Waste Disposal - El Dorado County, quoted and re-checked
- El Dorado County Zoning Ordinance, quoted and re-checked
- Application Information (Part 4), quoted and re-checked
- Alternative Structures: A Guide to Various Uses, quoted and re-checked
- El Dorado County Zoning Ordinance, Section 130.40.300 Accessory Dwelling Units, quoted and re-checked
- FAQ's - Planning, quoted and re-checked
- Water Well Program - El Dorado County, quoted and re-checked
- What's Required and How to Submit:, quoted and re-checked
- Minimum Requirements for Occupancy, quoted and re-checked
- California Building Standards in Effect, quoted and re-checked
- Fee Schedule, MOU's and Sample Fees, quoted and re-checked
- El Dorado County Building Division (eldoradocounty.ca.gov)
- El Dorado County Planning Division (eldoradocounty.ca.gov)
- FAQ's - Planning, quoted and re-checked
- El Dorado County Zoning Ordinance, quoted and re-checked
- Zoning Ordinance Updates - El Dorado County, quoted and re-checked
- El Dorado County Zoning Ordinance, quoted and re-checked
- El Dorado County Zoning Ordinance, quoted and re-checked
- El Dorado County Zoning Ordinance, quoted and re-checked
- El Dorado County Zoning Ordinance, Title 130, quoted and re-checked
- El Dorado County Environmental Management Department (eldoradocounty.ca.gov)
- OWTS Manual, Sections 1F-1G: Application Process and Inspections, quoted and re-checked
- Water Quality Control Policy for Siting, Design, Operation and Maintenance of Onsite Wastewater Treatment Systems (OWTS Policy) (California statewide rule), quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- El Dorado County Zoning Ordinance, Title 130, adopted 8/14/2018 and amended 10/16/2025, quoted and re-checked
- How to Obtain a Permit — Residential Accessory Structures, quoted and re-checked
- Grading Permit - El Dorado County, quoted and re-checked
- Grading Permit - El Dorado County, quoted and re-checked
- FAQ's - Planning, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- El Dorado County Building Division (eldoradocounty.ca.gov)
Written October 10, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.