Bolthole Index

Siskiyou County, California

Zoning, building permits and land rules in Yreka, California

Inside Yreka city limits, the City of Yreka sets zoning under Title 16 of its code and its own Building Department issues building permits123. Septic permits and wells are handled separately by Siskiyou County Environmental Health4. Living in an RV or mobile home on a city lot is allowed only on a temporary use permit while a permanent home is built5.

At a glance

Building permit
Required inside Yreka city limits; issued by the City of Yreka Building Department23
Zoning
City zoning under Title 16, with R-1, R-2, R-3, R-A and other districts1
Septic
Siskiyou County Environmental Health permits individual septic systems in the county; the city-limits case is unconfirmed4
RV living
Only with a temporary use permit while a permanent dwelling is under construction5
Manufactured homes
Allowed in residential zones on a permanent foundation6
Accessory dwelling units
Allowed; ADUs up to 1,200 sq ft7
Minimum lot, R-A
43,560 sq ft (one dwelling per gross acre)8
Floodplain
Siskiyou County floodplain development permit needed in mapped flood hazard areas9

Who to call

Building permits

City of Yreka Building Department

Building permits, plan review and building inspections inside Yreka city limits

(530) 841-2325

[email protected]

Planning & zoning

City of Yreka Planning Division

Zoning, development review and the city general plan inside Yreka city limits

(530) 841-2325

Septic permits

Siskiyou County Environmental Health Division

Septic systems and water wells in Siskiyou County

530-842-8200

[email protected]

806 South Main Street, Yreka, CA 96097

Online permits →

Floodplain permits

Siskiyou County Floodplain Administration

Flood-zone determinations and floodplain development permits

(530) 842-8265

[email protected]

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

Off-grid gear

Going off-grid in Yreka means bringing your own water and power. The kit we’d start with:

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Does Yreka, California have zoning, and what does it mean for RVs, tiny homes and lot size?

Yes. The City of Yreka has its own zoning under Title 16 of the city code, with R-1, R-2, R-3, R-A and other districts1. The city's Planning Division handles it10.

Lot size depends on the district. The R-2 medium-density district has a minimum parcel size of 8,000 square feet11. The R-3 high-density district has a minimum of 14,000 square feet12. The R-A residential agriculture district allows one dwelling per gross acre, a minimum of 43,560 square feet8. R-A also caps coverage by residential buildings at 20 percent13.

In R-2, a house needs side setbacks of 10 feet on one side and 5 feet on the other, and a dwelling needs a 20-foot rear setback14. Dwellings in R-2 and R-3 are limited to 35 feet in height1516.

Manufactured homes are allowed in the city's residential zones on a permanent foundation, with at least a 16-inch eave overhang, and homes more than 10 years between manufacture and permit application are prohibited6. We found no tiny-home provision in the city code we reviewed; ask the Planning Division before buying a lot for one.

Do you need a building permit in Yreka, and who issues it?

Yes. Inside Yreka city limits, homes and other permitted uses in the residential districts are allowed subject to issuance of a building permit2. The City of Yreka Building Department issues building permits, examines plans and inspects construction3. Yreka city limits are not covered by the Siskiyou County Building Division, which serves unincorporated land17.

The city's code adopts the California codes by reference18. California's statewide Title 24 building standards apply on top of that19. Larger projects under an approved site plan must satisfy the Planning Director's or Planning Commission's conditions before a certificate of occupancy is issued20.

A temporary occupancy permit is required to occupy a building or part of one before it is completed3. For building permit questions, call the Building Department at (530) 841-2325 or email [email protected]3.

How do septic permits work in Yreka?

Siskiyou County, not the City of Yreka, is the septic authority we could confirm. The Siskiyou County Environmental Health Division reviews, permits and inspects individual sewage disposal systems4. County ordinance requires a permit from that division before installing, repairing or altering an individual sewage disposal system21. A final inspection is required before the premises can be occupied22.

We could not confirm whether the city or the county issues septic permits for a lot inside Yreka city limits, and many city lots connect to public sewer instead. Before you buy, ask the Environmental Health Division at 530-842-820023 whether the lot needs a septic permit or a sewer connection.

Wells are also county business: Environmental Health permits and inspects domestic wells in Siskiyou County24.

Can you live in an RV or tiny home on your lot in Yreka?

Only temporarily. Yreka's code allows temporary residential use of a mobile home or similar portable structure in a residential zone while a permanent dwelling is under construction, and only with a temporary use permit5. The permit is issued only after a sewage disposal permit and a building permit have been issued5. The structure must be removed after one year if the building permit is not renewed5. Travel trailers are also allowed for security personnel at active construction sites5.

That is not a general right to live in an RV on a vacant city lot. We found no tiny-home provision in the city code we reviewed, so call the Planning Division at (530) 841-2325 to find out how your structure would be classified10.

Accessory dwelling units are a more settled path. Yreka allows ADUs and junior ADUs, with ADUs up to 1,200 square feet and junior ADUs up to 500 square feet, and short-term rental of these units is not allowed7.

Building a home in Yreka: the steps, in order

  1. Confirm the zoning district of the lot and its minimum parcel size with the Planning Division110.
  2. Check whether the lot is in a mapped flood hazard area; development there needs a Siskiyou County Floodplain Development Permit9.
  3. Ask Siskiyou County Environmental Health whether the lot needs a septic permit, a well permit or a sewer connection23.
  4. Apply for a building permit with the City of Yreka Building Department23.
  5. If you need to live on site during construction, apply for a temporary use permit once the sewage disposal and building permits are issued5.
  6. Schedule inspections through the Building Department, and get a temporary occupancy permit before moving into an unfinished building3.

What stays with Siskiyou County, and what to check before you buy in Yreka?

The City of Yreka decides zoning and building permits inside its limits, but several things stay with the county or state. Septic and well permits come from Siskiyou County Environmental Health424. Floodplain development permits come from the county floodplain administrator9. A driveway onto a state highway needs a Caltrans encroachment permit25.

For land outside city limits, the rules are different; see the Siskiyou County page for unincorporated Siskiyou County.

County-level numbers: Siskiyou County's effective property tax rate is 0.7%26, and the median property tax bill is about $1,880 per year27. The county averages 37.7 inches of precipitation a year28, and 63.6% of county land is federally owned29.

Watch-outs

  • Do not call the Siskiyou County Planning or Building counters for a lot inside Yreka city limits: the city's own Building Department and Planning Division handle building permits and zoning there310.
  • Yreka's adopted-code text lists the 2010 California codes, while state-adopted later editions may apply by state law; confirm the edition in force with the Building Department18.
  • Short-term rental of the main dwelling is addressed in a separate Title 16 definition we did not confirm; ask the Planning Division before buying for vacation-rental income30.
  • We could not confirm who issues septic permits for lots inside city limits, or the city's permit fees and inspection details; call Environmental Health at 530-842-8200 and the Building Department at (530) 841-2325233.

Sources

  1. Yreka Code 16.18.050 Permitted uses (R-1) (Yreka), quoted and re-checked
  2. Yreka Code 16.22.050 Permitted uses (R-3) (Yreka), quoted and re-checked
  3. City of Yreka Building Department (ci.yreka.ca.us)
  4. Land Use, quoted and re-checked
  5. Yreka Code 16.45.010 Temporary use permits (Yreka), quoted and re-checked
  6. Yreka Code 16.18.090 Manufactured homes in residential zones (Yreka), quoted and re-checked
  7. Yreka Code 16.46.170 Accessory dwelling units (Yreka), quoted and re-checked
  8. Yreka Code 16.24.030 R-A Density/Intensity (Yreka), quoted and re-checked
  9. Floodplain Management, quoted and re-checked
  10. City of Yreka Planning Division (ci.yreka.ca.us)
  11. Yreka Code 16.20.030 R-2 Density/Intensity (Yreka), quoted and re-checked
  12. Yreka Code 16.22.030 R-3 Density/Intensity (Yreka), quoted and re-checked
  13. Yreka Code 16.24.030 R-A Density/Intensity (Yreka), quoted and re-checked
  14. Yreka Code 16.20.040 R-2 Site Development Standards (Yreka), quoted and re-checked
  15. Yreka Code 16.20.040 R-2 Site Development Standards (Yreka), quoted and re-checked
  16. Yreka Code 16.22.040 R-3 Site Development Standards (Yreka), quoted and re-checked
  17. Applications and Permits | Siskiyou County California, quoted and re-checked
  18. Yreka Code 11.01.030 Uniform codes adopted (Yreka), quoted and re-checked
  19. Approved Building Standards (California statewide rule), quoted and re-checked
  20. Yreka Code 16.52.050 Building permit (site plan review) (Yreka), quoted and re-checked
  21. Individual Sewage Disposal Systems Site Review and Permit Procedure, quoted and re-checked
  22. Individual Sewage Disposal Systems Site Review and Permit Procedure, quoted and re-checked
  23. Siskiyou County Environmental Health Division (siskiyoucounty.gov)
  24. Water Wells, quoted and re-checked
  25. Encroachment Permits | Caltrans (California statewide rule), quoted and re-checked
  26. Effective property tax rate: Bolthole Index county data
  27. Median property tax bill: Bolthole Index county data
  28. Annual precipitation: Bolthole Index county data
  29. Federal land share: Bolthole Index county data
  30. Yreka Code 16.46.170 Accessory dwelling units (Yreka), quoted and re-checked

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.

Answers from the rulebook for Yreka

Yreka’s own rules

  • Building permitRequired

    Single-family dwellings and other uses in R-3 inside Yreka city (same wording in R-1)

    • Uses permitted subject to building permit, business license or other required permits
    “The following uses are permitted in the R-3 zone district subject to issuance of a building permit, business license or other required permit(s):”
  • Building code adoptedAdopted

    Construction inside Yreka city

    • Code text lists the 2010 California codes (2009 I-codes); state-adopted later editions may apply by state law, not verified here
    “the following primary and secondary codes are adopted and incorporated into the codes of the city by reference”
  • Certificate of occupancyRequired

    Buildings under approved site plans inside Yreka city

    • Site plan conditions must be met before certificate of occupancy or final approval
    • Source speaks to site-plan projects; general CO rule not located
    “All conditions imposed by the Plan ning Director or Planning Commission must be complied with prior to issuance of any certificate of occupancy or final approval.”
  • Local zoningPresent

    Land inside Yreka city limits

    • Title 16 Zoning with R-1, R-2, R-3, R-A and other districts
    “The following uses are permitted in the R-1 zone district subject to issuance of a building permit, business license or other required permit(s):”
  • Minimum lot sizeSpecified

    R-2 Medium Density Residential district inside Yreka city

    • Minimum width 70 ft, depth 75 ft

    minimum parcel size: >= 8000 sq ft

    “minimum parcel size: eight thousand (8,000) square feet.”
    2 more reviewed findings on this topic
  • SetbacksSpecified

    R-3 district inside Yreka city

    • Corner lot: interior side 5 ft, exterior side 20 ft
    • Rear: dwelling 20 ft; detached garage and accessory buildings 5 ft
    • Front: accessory building 60 ft

    front setback, dwelling: >= 20 ft · side setback: >= 10 ft (corner lot rules)

    “side: ten (10) feet. in the event the lot is located on a corner, the interior side shall be a minimum of five (5) feet and the exterior side shall be a minimum of twenty (20) feet.”
    One more reviewed finding on this topic
  • Lot coverageSpecified

    R-A Residential Agriculture district inside Yreka city

    • Non-residential uses up to 60 percent

    maximum coverage residential: <= 20 percent

    “maximum coverage residential uses: twenty (20) percent; e. maximum coverage non-residential uses: sixty (60) percent.”
    2 more reviewed findings on this topic
  • Building heightSpecified

    R-2 district inside Yreka city

    • Public and quasi-public buildings 45 ft
    • Accessory 15 ft, or 25 ft if Planning Director finds no significant view obstruction

    maximum dwelling height: <= 35 ft

    “maximum height: (a) dwelling: thirty-five (35) feet;”
    One more reviewed finding on this topic
  • Living in an RVLimited

    Residential occupancy of mobile home or similar portable structure on a residential lot inside Yreka city

    • Requires temporary use permit
    • Only while permanent dwelling is under construction
    • Permit only after sewage disposal permit and building permit issued
    • Removal after one year if building permit not renewed
    • Travel trailer occupancy also allowed for security personnel at active construction sites
    “the temporary use of a mobile home or similar portable structure for residential use when located in a residential zoning district, while a permanent dwelling (including mobile homes) is under construction:”
  • Manufactured homesAllowed (with conditions)

    Manufactured homes in R-1 (same wording in R-2, R-3) inside Yreka city

    • Permanent foundation required
    • Minimum 16-inch eave overhang
    • Historic District review applies
    • Homes more than 10 years between manufacture and permit application are prohibited

    minimum eave overhang: >= 16 inches

    “manufactured homes are permitted in residential zone districts as a single-family residence if such manufactured home is placed on a permanent foundation.”
  • Accessory dwellingsAllowed

    ADUs and JADUs inside Yreka city

    • Not subject to use permit
    • In CPO, C-2, CH, CT, M-1 only with existing or proposed dwelling
    • JADUs by right only in R-1
    • JADU max 500 sq ft; ADU max 1,200 sq ft
    • Rental must exceed 30 days; short-term rental not allowed
    • 4-foot side and rear setbacks for new ADUs

    maximum ADU size: <= 1200 sq ft

    “short-term rental (thirty days or less) of these units is not allowed.”
  • Subdividing landRegulated (with conditions)

    Subdivisions inside Yreka city

    • City engineer may require larger lots for access due to topography
    “minimum lot or parcel sizes and width shall comply with title 16 of this code. the city engineer may require a larger lot or parcel size or width of any proposed lot or parcel where the topography of the proposed subdivided parcel requires such increases”
  • Short-term rentalsLimited

    Accessory dwelling units and JADUs inside Yreka city

    • Short-term rental of the main dwelling is addressed by a 'residential vacation rental' definition in Title 16 (not opened)
    “short-term rental (thirty days or less) of these units is not allowed.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Yreka or Siskiyou County directly.

  • Owner-builder exemption — Inside Yreka city
  • Inspections — Inside Yreka city
  • Minimum dwelling size — Inside Yreka city
  • Tiny homes — Inside Yreka city
  • Who permits septic — Inside Yreka city
9 more unanswered
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Permit fees
  • Permit process

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Yreka publishes no rule on the point, not that none exists. Siskiyou County’s page lists the county offices to call.

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