Unincorporated Calaveras County, California requires a building permit for new home construction, and the county won't issue that permit until your septic (OWTS) permit is approved1. The county's Zoning Code regulates land, uses, structures and development throughout unincorporated Calaveras County2. The Building Department, Planning Department and Environmental Management Agency each administer a piece of the process, and the county offers an Owner-Builder path34.
At a glance
- Building permit
- Required for new dwelling construction, issued by the Calaveras County Building Department13
- Zoning
- County Zoning Code applies to land, uses, structures and development in unincorporated areas25
- Septic permits
- County-issued OWTS permits through the Environmental Management Agency; required before a dwelling building permit is issued67
- RV / tiny home living
- A single RV or mobile home may serve as a temporary residence only once a building permit for a permanent home is issued on the same parcel8
- Owner-builder
- Available under state law and the county's own Owner-Builder process, including Limited Density Owner-Built Rural Dwellings49
- Well permits
- Required from the county before drilling a new well or working on an existing one10
- Building code
- County-enforced California Building Code; the 2025 state code applies to applications on or after 2026-01-011112
- Septic soil difficulty
- Only 0.3% of county soils are free of severe limits for a conventional drain field13
Who to call
Building permits
Calaveras County Building Department
Building permits, plan review, inspections and code compliance for unincorporated Calaveras County; contact is the Chief Building Official
891 Mountain Ranch Road, Building E, San Andreas, CA 95249
Septic permits
Calaveras County Environmental Management Agency - On-Site Wastewater
Onsite Wastewater Treatment System (OWTS/septic) permits, site evaluations and inspections for Calaveras County; the same Environmental Health division also runs the county's well-permitting program; contact is the Environmental Health Director
891 Mountain Ranch Road, Building E, San Andreas, CA 95249
Planning & zoning
Calaveras County Planning Department
Zoning Code administration, flood plain administration, general plan updates, and zone changes, variances, subdivisions, parcel maps and use permits for unincorporated Calaveras County
891 Mountain Ranch Road, Building E, San Andreas, CA 95249
Floodplain permits
Calaveras County Department of Public Works
Permits and Inspections, including grading permits required for development within FEMA-mapped flood plains, and road-related permitting for unincorporated Calaveras County; contact is the Public Works Director
891 Mountain Ranch Road, Building D, San Andreas, CA 95249
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in Calaveras County, California?
Yes. Calaveras County requires a building permit for new dwelling construction, including limited-density rural dwellings and single- or two-family homes, and a new dwelling permit will not be issued until an OWTS septic permit has been issued114. The county exempts specific small-scale work under California Residential Code Section R105.2, including listed accessory structures, fences, retaining walls, water tanks, sidewalks, driveways, certain pools, playground equipment, awnings and decks1. The published fee schedule effective August 8, 2026 lists a $5,701 base fee for a single- or two-family dwelling; plan-check fees are due at submittal, and other departmental fees may apply15. Calaveras County has adopted the California Building Code for construction administered by its Building Department11. The 2025 California Building Standards Code applies to permit applications dated on or after January 1, 202612.
Who is the Calaveras County building department, and how do you reach them?
Calaveras County's Building Department is at 891 Mountain Ranch Road, Building E, San Andreas, CA 95249, phone (209) 754-63903. The office accepts building-permit applications and plan submissions, and its online portal lets applicants submit applications, upload plans, track permit status and manage projects163. Plans may be submitted digitally or on paper; listed project types eligible for a digital or single plan set include residential additions of 1,000 square feet or less16. Available for select permit types, the eInspect Program lets qualifying licensed contractors complete eligible inspections remotely with photo documentation317. E-Inspect requires the appropriate active California specialty license, and incomplete forms, missing photos, poor images or a submission from an improperly licensed person may be rejected and sent to a standard field inspection17.
Does Calaveras County have zoning?
Yes. Calaveras County's Zoning Code applies to land, uses, structures and development throughout the unincorporated county, and the current code took effect August 15, 20242. The county publishes its zoning districts, while the Official Zoning Map identifies the district for each parcel; confirm the map designation with the Planning Department before relying on district standards185. Dimensional standards vary by district: resource zones generally use a 30-foot property-line or 60-foot road-centerline front and street-side setback, whichever is greater, while residential districts generally use 20 feet from the property line or 50 feet from centerline19. Maximum height is 35 feet in resource, RR, R1 and R2 districts and 45 feet in R3, subject to code exceptions20. The Planning Department also handles flood plain administration, zone changes, variances, subdivisions and use permits5.
How do septic permits work in Calaveras County?
Septic systems in unincorporated Calaveras County go through the Environmental Management Agency's On-Site Wastewater Department, which administers the full permitting and inspection process, including profile-hole review, plan approval, installation permitting and construction inspections217. Before any construction starts, an installation permit must come from that department, and a dwelling building permit will not be issued until your OWTS permit is issued211. Getting there starts with a minimum of four profile holes, split between the proposed disposal area and the proposed expansion area22. Under the county's fee schedule effective August 8, 2026, a standard installation permit runs $760, an engineered installation permit $823, the profile-hole fee $633, and the engineered plan-check fee $25322. All required inspections must be scheduled at least 24 hours in advance, and county staff perform open-trench and final inspections before the system can be used23. Statewide, California's OWTS Policy puts the State Water Board and regional water quality control boards in charge of oversight, with local agencies like Calaveras County's implementing their own Regional Water Board-approved programs24. Soils make this a serious planning issue here: only 0.3% of Calaveras County's land is free of severe limitations for a conventional septic drain field, among the toughest shares Bolthole Index tracks, so budget for an engineered or alternative system on most parcels13.
Can you live in an RV or tiny home on your land in Calaveras County?
Only temporarily, and only once a permanent home is already underway. Calaveras County's Zoning Code allows a single mobile home, recreational vehicle or travel trailer with current, valid registration and license to serve as a temporary residence once a building permit for a permanent residence has been issued on the same parcel8. Only one such temporary residence is allowed per assessor parcel, and it must be removed or converted to a permitted use before the county issues the certificate of occupancy for the permanent home; noncompliance can trigger enforcement under the county's Title 17 Zoning Code and revocation of the building permit8. Short of that, a property owner may camp on their own private land, in an RV or other shelter, for up to 14 continuous days or a cumulative 30 days in a calendar year25. California's default statewide rule points the same direction: RVs are not intended for occupancy as permanent dwellings, and unless a local ordinance allows otherwise, RV occupancy is generally limited to mobilehome or special occupancy parks26. Tiny homes have a narrow legal path too: to be occupied, a tiny home must comply with and be approved as one of several specific structure types, a HUD-Code manufactured home, a California Residential or Building Code home, factory-built housing, an RV, a park trailer or a camping cabin, and a unit that fits none of those categories is a noncomplying structure whose occupancy is illegal27. Manufactured homes are more established: in the Rancho Calaveras Special Plan area, a manufactured home is allowed anywhere a conventional house is otherwise permitted except within historical districts, provided it meets the 1976 HUD nationally standardized construction standards28, and statewide, manufactured homes may be occupied inside or outside mobilehome parks under the Mobilehome Parks Act and Title 2529.
How do you build a home in Calaveras County, step by step?
- Ask the Planning Department to confirm the parcel's zoning district, allowed residential use, setbacks and height limits before design begins52.
- If the parcel is in the Calaveras County Water District service area, determine whether it has water or wastewater connections, needs a paid connection, or requires a district line extension30.
- Start with the Environmental Management Agency's On-Site Wastewater Department if the site needs septic; Calaveras County will not issue a new dwelling permit until the OWTS permit is issued714.
- Complete the septic site work and plan review, including at least four profile holes split between the proposed disposal and expansion areas22.
- Submit the building-permit application and plans to the Building Department on paper or through its online portal, and identify whether licensed contractors or an owner-builder will perform the work164.
- Schedule building and septic inspections; eligible licensed contractors may use E-Inspect for certain building inspections, while OWTS inspections require at least 24 hours' notice1723.
What should you check before buying land in Calaveras County?
Only 0.3% of Calaveras County's land is free of severe limitations for a conventional septic drain field, so obtain a site evaluation before committing to a parcel and allow for an engineered system13. Just 18.4% of the county has a slope of 15% or less, 70.4% is wooded, and severe drought occurs in 36.8% of years; investigate buildable area, water supply, fire access and defensible space parcel by parcel313233. A county permit is required before developing a new well or working on an existing one, and the permit is valid for one year with three required inspections10. Within the Calaveras County Water District service area, verify whether the parcel has an existing connection, needs a paid connection, or requires a line extension30. Floodplain grading in unincorporated Calaveras County requires a Public Works grading permit, plans, supporting documents and a pre-construction meeting before earthwork34. New residential construction must be outside flood-hazard areas or at least two feet above base flood elevation; nonresidential construction requires floodproofing35. Calaveras County's effective property-tax rate is about 0.7%, with a median annual bill near $3,154 and a typical home value around $443,413363738.
Watch-outs
- No official Calaveras County source reviewed for this guide states a general rule allowing RV occupancy on ordinary rural land beyond the temporary, permit-linked exception in the Zoning Code, so ask the Planning Department directly before assuming you can live in an RV on unbuilt land85.
- A dwelling building permit isn't issued until your OWTS septic permit is approved, and only 0.3% of Calaveras County's soils are free of severe limitations for a conventional septic drain field, so start the septic process before you finalize house plans113.
Sources
- Procedures For Obtaining An Onsite Sewage Disposal System (2026 county census)
- Calaveras County Zoning Code, quoted and re-checked
- Calaveras County Building Department (building.calaverasgov.us)
- Calaveras County Code Ch. 15.12 Owner-Built Rural Dwellings (2026 county census)
- Calaveras County Planning Department (planning.calaverasgov.us)
- Procedures for Obtaining an Onsite Wastewater Treatment System (OWTS) (2026 county census)
- Calaveras County Environmental Management Agency - On-Site Wastewater (ema.calaverasgov.us)
- Calaveras County Zoning Code, quoted and re-checked
- California Business and Professions Code Section 7044, quoted and re-checked
- Well Program, quoted and re-checked
- GATEHOUSE Rock Creek Flat Top Special Provisions, quoted and re-checked
- Approved Building Standards (California statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Procedures For Obtaining An Onsite Sewage Disposal System, quoted and re-checked
- Calaveras County Building Department Fees, quoted and re-checked
- Calaveras County Building Department FAQs, quoted and re-checked
- Inspections, quoted and re-checked
- Zoning Ordinance Update, quoted and re-checked
- Calaveras County Zoning Code, quoted and re-checked
- Calaveras County Zoning Code, quoted and re-checked
- Procedures For Obtaining An Onsite Sewage Disposal System, quoted and re-checked
- Procedures For Obtaining An Onsite Sewage Disposal System, quoted and re-checked
- Procedures For Obtaining An Onsite Sewage Disposal System, 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
- Calaveras County Zoning Code, quoted and re-checked
- Information Bulletin 2016-01: Tiny Homes (California statewide rule), quoted and re-checked
- Information Bulletin 2016-01: Tiny Homes (California statewide rule), quoted and re-checked
- Rancho Calaveras Special Plan, quoted and re-checked
- Information Bulletin 2016-01: Tiny Homes (California statewide rule), quoted and re-checked
- New Connections, quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- Wooded share of land: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- Calaveras County Code Title 15, Chapter 15.05 Grading and Drainage Ordinance, quoted and re-checked
- Calaveras County General Plan Safety Element – June 27, 2019, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Typical home value (Zillow): Bolthole Index county data
Written September 29, 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.