Building permits, zoning and septic rules in Big Bear Lake, California

At a glance

Building permit

Issued by the City of Big Bear Lake, not the county; required before construction of many improvements¹

Zoning

City Development Code and zoning map, administered by the City Planning Division²⁴

Septic

County Environmental Health Services runs the county program; how it applies inside city limits is unconfirmed, so ask before buying³

Wells

A well permit is required in San Bernardino County; ask the county whether anything extra applies inside the city⁵

RV living

State law generally limits RV occupancy to mobilehome and special occupancy parks unless a local ordinance allows more; the city's rule for a private lot is unconfirmed⁶

Camping

Unlawful on public property inside the city and in any city park⁷⁸

Owner-builder

State law lets an owner build on their own property, but the owner must pull all building permits and pass inspections⁹

Short-term rental

Allowed with a city registration and inspection¹⁰

Who to call

Contact details are copied from each office’s official page and were checked against it on October 16, 2026.

Does Big Bear Lake, California have zoning, and what does it mean for RVs, tiny homes and setbacks?

Yes. The City of Big Bear Lake administers its own zoning and development standards through its Development Code and zoning map². The city's Planning Division publishes the zoning map and the planning fee schedule on its page⁴. The San Bernardino County Development Code governs unincorporated land only, so a parcel inside Big Bear Lake follows the city's code, not the county's¹¹.

We could not confirm the city's ordinary residential setbacks, height limits, minimum home size or accessory dwelling rules from the code sections we reviewed. Look up the parcel's zone on the city zoning map, then ask the Planning Division for the standards for that district before you offer on a lot⁴. Do not borrow the county's setback table; it applies to unincorporated parcels¹².

One standard we did confirm: home sites in the city's manufactured-home parks and subdivisions may be covered up to 75 percent, counting the home and all accessory structures¹³.

Do you need a building permit in Big Bear Lake, and who issues it?

The City of Big Bear Lake issues building permits inside city limits through its Building & Safety Division, and the division says the city requires a building permit before construction of many improvements to private property¹. San Bernardino County Building and Safety handles building permits only for unincorporated land, and the county's own page notes that incorporated municipalities may run their own permitting¹⁴. A reader inside Big Bear Lake who goes to the county counter in San Bernardino has gone to the wrong office.

The division's public counter is open 8 am to 5 pm, Monday through Friday, and inspectors take appointments through the inspection line¹. We could not confirm from the city's pages the exact rule for a brand-new house, so ask the counter what your project needs. Statewide, no building or structure may be built, enlarged, altered or demolished without a permit from the building official¹⁵.

All inspections run through the city. Depending on scope the city may inspect foundation, framing, plumbing and electrical work, and it requires a final inspection on every building permit¹⁶. Permit applications filed on or after January 1, 2026 fall under the 2025 California Building Standards Code¹⁷.

How do septic permits and wells work in Big Bear Lake?

Septic permits are not a city building-counter matter. San Bernardino County Environmental Health Services runs the county's septic program, with County Building and Safety issuing the construction permit for a system on unincorporated land¹⁸. That county program is written for the unincorporated area and says incorporated cities are outside its scope¹⁹. We could not confirm who permits a septic system on a parcel inside Big Bear Lake, so call Environmental Health Services at the number above, and ask the city's Building & Safety Division about public sewer on your street, before you count on either option²⁰.

USDA soil data for San Bernardino County as a whole rates only a small share of soils as not limited for a conventional drain field²¹. Expect a site evaluation and possibly an engineered system on a lot without sewer.

Wells need a permit anywhere in San Bernardino County⁵, and the work must be done by a licensed C-57 well drilling contractor²². Whether the city adds its own well rules is unconfirmed.

Can you live in an RV or tiny home on your land in Big Bear Lake?

We could not confirm a city rule that allows or bans living in an RV on a private lot inside Big Bear Lake, and none of the pages we reviewed answered it. Statewide, RVs are not intended as permanent dwellings, and unless a local ordinance allows otherwise they generally may be occupied only in mobilehome parks or special occupancy parks⁶. Ask the Planning Division whether the parcel's zone allows any RV occupancy before you plan to stay in one⁴.

Two rules are firm. Camping on public property inside the city is unlawful⁷, and no one may camp in a city park⁸. In flood-hazard zones on the city's flood map, an RV must either be on the site for fewer than 180 consecutive days and fully licensed and ready for highway use, or meet the city's floodplain permit, elevation and anchoring rules²³.

For tiny homes, California requires that a tiny home be approved as a manufactured home, a code-built home, factory-built housing, an RV, a park trailer or a camping cabin to be occupied; one that fits none of those is illegal to occupy²⁴. The city's own tiny-home position is unconfirmed.

Building a home in Big Bear Lake: the steps, in order

1. Find the parcel's zone on the city zoning map and call the Planning Division to confirm what the zone allows⁴.
2. Ask Environmental Health Services whether the parcel can take a septic system, or ask the city whether public sewer reaches it³.
3. Check whether any part of the parcel is in a mapped flood-hazard zone; the city has floodplain rules that reach RVs and structures²³.
4. Apply for plan check and a building permit with the city's Building & Safety Division. An owner-builder signing the application takes responsibility for all phases of the project and must pull all building permits⁹.
5. Schedule inspections as the work proceeds, ending with the final inspection the city requires on every building permit¹⁶.
6. Secure a well permit if the lot will use a well⁵.

What stays with San Bernardino County, and what to check before you buy in Big Bear Lake?

San Bernardino County handles septic review and well permits, and its Building and Safety and Planning divisions serve unincorporated land outside the city¹⁸. If your parcel has a Big Bear Lake address but may lie outside city limits, confirm which side of the boundary it sits on, because the answer changes who issues building permits and sets zoning. The county's own page describes its permit rules as covering unincorporated areas; for those parcels read the San Bernardino County page¹⁴.

Costs and risks at the county level: the typical home value in San Bernardino County is about $553,855²⁵, the effective property tax rate is about 0.7 percent²⁶, and a typical home insurance premium runs about $1,376 a year²⁷.

If you plan to rent the home short term, the city requires a vacation-rental registration, a $635 fee, and an inspection before rentals begin¹⁰.

Watch-outs

• Do not use the county's unincorporated-area rules for a lot inside Big Bear Lake; the city issues building permits and sets zoning there¹².
• We could not confirm who permits a septic system inside Big Bear Lake city limits; ask County Environmental Health Services and the city's Building & Safety Division before you buy³.
• We could not confirm the city's setbacks, height limits, minimum home size or accessory dwelling rules; ask the Planning Division for the standards for the parcel's zone⁴.
• Short-term rentals inside the city require a city registration and inspection, and rentals are not allowed while that inspection is in process¹⁰.

Sources

1. City of Big Bear Lake Building & Safety Division (bigbearlake.gov)
2. Community and Economic Development (Big Bear Lake), quoted and re-checked
3. San Bernardino County Local Agency Management Program, quoted and re-checked
4. City of Big Bear Lake Planning Division (bigbearlake.gov)
5. Do I need a permit to construct or destroy a well?, quoted and re-checked
6. hcd.ca.gov (California statewide rule), quoted and re-checked
7. Unlawful camping (Big Bear Lake), quoted and re-checked
8. Prohibition of camping in parks (Big Bear Lake), quoted and re-checked
9. Owner-Builder Responsibilities (California statewide rule), quoted and re-checked
10. Vacation Rental Program (Big Bear Lake), quoted and re-checked
11. Zoning and Overlay Maps, quoted and re-checked
12. Development Code – Land Use Services, quoted and re-checked
13. Manufactured home subdivisions and parks (Big Bear Lake), quoted and re-checked
14. Building and Safety Questions – Land Use Services, quoted and re-checked
15. Do I need a building permit for my project? (California statewide rule), quoted and re-checked
16. Frequently Asked Questions - Building and Safety Division (Big Bear Lake), quoted and re-checked
17. Approved Building Standards (California statewide rule), quoted and re-checked
18. San Bernardino County Local Agency Management Program, quoted and re-checked
19. San Bernardino County Local Agency Management Program, quoted and re-checked
20. 2023 OWTS Policy (California statewide rule), quoted and re-checked
21. 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
22. Well Standards (California statewide rule), quoted and re-checked
23. Standards for recreational vehicles in areas of special flood hazards (Big Bear Lake), quoted and re-checked
24. Information Bulletin 2016-01: Tiny Homes (California statewide rule), quoted and re-checked
25. Typical home value (Zillow): Bolthole Index county data
26. Effective property tax rate: Bolthole Index county data
27. Typical home insurance premium: Bolthole Index county data

Written October 16, 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.