Bolthole Index

Josephine County, Oregon

Building permits, zoning and land rules in Cave Junction, Oregon

Cave Junction, Oregon requires city zoning clearance for covered construction, and Josephine County Building Safety issues building permits inside the city.1 Cave Junction administers its own zoning; septic permitting stays with Oregon DEQ’s Medford office.23 Do not treat the county’s rural land-use rules as permission to build or live in an RV inside Cave Junction.2

At a glance

Building permits
Josephine County Building Safety issues building permits; city zoning clearance comes first.1
Zoning
Cave Junction administers its own zoning and development review.24
Septic
Oregon DEQ Medford handles residential septic permitting.3
Manufactured homes
SR district allows qualifying multi-sectional homes with at least 1,000 square feet.5
Owner-builder
Limited exemption for ceiling heights, room sizes and temperature requirements; building permit still needed.61
Floodplain
Covered residential construction must elevate the lowest floor at least 1 foot above base flood elevation.7

Who to call

Planning & zoning

Cave Junction Planning Division

City zoning clearance, land-use applications and site-plan review; ask about floodplain review.

(541) 592-2156

222 W. Lister Street

Building permits

Josephine County Building Safety Department

Building permits for work inside Cave Junction.

(541) 474-5405

[email protected]

Septic permits

Oregon DEQ Residential Septic Permitting — Medford Office

Residential and small-business septic permitting for Josephine County.

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

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

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Do you need a building permit in Cave Junction, OR?

Residential construction in Cave Junction requires a building permit unless a specific state exemption applies; covered construction also needs city zoning clearance.1 Cave Junction’s zoning clearance communicates compliance with the city zoning code to the county building safety department, which issues the building permit.4 Owner-builders can qualify for an exemption concerning ceiling heights, room sizes and maintaining specific temperatures, but that exemption must be noted on the building permit.6 The owner must intend to occupy the dwelling and construct its structural components personally or with unpaid help from friends or relatives.6

Who handles Cave Junction building permits and zoning approval?

Start land-use questions with the Cave Junction Planning Division at (541) 592-2156; the city processes zoning clearances, subdivisions and variances and reviews site plans for zoning, setbacks and access.8 For building-permit questions, Cave Junction’s official website directs applicants to Josephine County Building Safety at (541) 474-5405 or [email protected].9 These are separate approvals: city development review or site-plan review applies to new developments and modifications, with listed maintenance and repair exceptions.4 Septic applications belong with Oregon DEQ’s Medford office rather than either zoning counter.3

Does Cave Junction have zoning, and can you use a manufactured home?

Cave Junction has its own zoning code, and a proposed use must meet the applicable district and development-review requirements.2 In Cave Junction’s SR Single-Family Residential District, manufactured homes on individual lots must be multi-sectional and have at least 1,000 square feet of enclosed floor area.5 Those homes must also satisfy the applicable roof, siding, garage or carport, foundation, skirting and other design conditions; the standards include an exception for units already in the city before the ordinance took effect.5 The manufactured-home floor-area threshold does not establish a minimum for every dwelling type.10 Ask Cave Junction Planning for the parcel’s district-specific setbacks, lot size, height and coverage standards.8

How do septic permits work inside Cave Junction?

For a Cave Junction property using septic, Oregon DEQ’s Medford office is the residential septic permitting authority for Josephine County.3 New septic installations need a permit, and a site evaluation does not itself authorize construction; alterations and repairs also fall under Oregon’s septic construction-permit program.1112 After installation, applicants submit the final inspection request, as-built drawing, installation photos and materials list through Oregon e-Permitting so the pre-cover inspection can be scheduled.13 Before designing a septic system, ask Cave Junction Planning which wastewater arrangement is acceptable for the proposed development and ask DEQ about site approval.814

Can you live in an RV or tiny home in Cave Junction?

We could not confirm a complete rule allowing RV living or tiny-home occupancy on a private lot inside Cave Junction; ask the Cave Junction Planning Division about the specific parcel, dwelling design and intended duration before buying.8 Cave Junction’s public-park camping rule restricts overnight camping to designated areas, with an advance-permission exception for youth groups; that rule does not answer private-lot occupancy.15 In regulated city flood-hazard areas, recreational vehicles face additional duration, licensing and utility requirements.7 A manufactured home proposed in the SR district must satisfy the city’s manufactured-home standards rather than being treated as an automatically permitted tiny home.5

Building a home in Cave Junction: what are the steps?

  1. Ask Cave Junction Planning to review the zoning district, proposed use, site layout, setbacks and access.8
  2. Obtain the required city zoning clearance and applicable development or site-plan review before covered construction.4
  3. Resolve wastewater approval with Oregon DEQ if the property will use septic; an unevaluated undeveloped site needs a site evaluation.312
  4. Apply for the building permit through Josephine County Building Safety and keep permitted work accessible and exposed for inspections until approved.116
  5. For regulated flood-hazard areas, account for the requirement to elevate the lowest residential floor, including the basement, at least 1 foot above base flood elevation.7

For land outside Cave Junction city limits, use the Josephine County guide for county rural zoning instead of applying the city’s zoning clearance process.2

Watch-outs

  • The 2026 Oregon Residential Specialty Code administrative provisions became mandatory October 1, 2026; construction provisions become mandatory April 1, 2027 after a phase-in period.17
  • We could not confirm current complete Cave Junction building and zoning fee schedules; request the applicable charges from city Planning and Josephine County Building Safety before budgeting.89
  • A new driveway connection to an Oregon state highway, or a change in use of an existing connection, requires written permission from ODOT.18

Sources

  1. 17.14.110 - Permit required (Cave Junction), quoted and re-checked
  2. 17.20.040 - Lot and yard requirements (Cave Junction), quoted and re-checked
  3. Residential Septic Permitting, quoted and re-checked
  4. 17.14.110 - Permit required (Cave Junction), quoted and re-checked
  5. 17.20.080 - Special standards for certain uses (Cave Junction), quoted and re-checked
  6. 2026 Oregon Residential Specialty Code, Chapter 1 (Cave Junction), quoted and re-checked
  7. library.municode.com (Cave Junction), quoted and re-checked
  8. Cave Junction Planning Division (cavejunctionoregon.us)
  9. Josephine County Building Safety Department (cavejunctionoregon.us)
  10. 17.20.080 - Special standards for certain uses (Cave Junction), quoted and re-checked
  11. Residential Septic Permitting, quoted and re-checked
  12. Housing and Onsite Wastewater Management (Oregon statewide rule), quoted and re-checked
  13. Residential Septic Permitting, quoted and re-checked
  14. Oregon DEQ Residential Septic Permitting — Medford Office (oregon.gov)
  15. 12.20.140 - Camping (Cave Junction), quoted and re-checked
  16. 2026 Oregon Residential Specialty Code, Chapter 1 (Cave Junction), quoted and re-checked
  17. 2026 Oregon Residential Specialty Code, Chapter 1 (Cave Junction), quoted and re-checked
  18. Access Management (Oregon statewide rule), quoted and re-checked

Written October 11, 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 Cave Junction

Cave Junction’s own rules

  • Building permitRequired

    Construction and improvements subject to Cave Junction Title 17 inside city limits.

    • A city zoning clearance permit is required before covered construction or alteration.
    • The county building safety department is the agency responsible for issuing building permits.
    • State permit exemptions apply to specified minor work.
    “A building p​ermit is required to construct, enlarge, alter, repair, or move a residential building or structure.”
  • Local zoningPresent

    Land inside Cave Junction city limits; the city has an adopted Title 17 Zoning code administered through city planning procedures.

    • Individual uses remain subject to the applicable zoning district and development-review requirements.
    “No building or structure or other improvement such as parking lots or paving, subject to the provisions of this title, shall be constructed, erected, reconstructed, changed in use, moved, extended, enlarged or altered without prior issuance of a zoning clearance permit by the planning commission.”
  • Minimum dwelling sizeSpecified

    Manufactured homes on individual lots in the SR Single-Family Residential District.

    • This numeric minimum is for manufactured homes, not necessarily every dwelling type.
    • The unit must satisfy the other standards in 17.20.080(C).

    enclosed floor area: >= 1000 square feet

    “The manufactured home shall be multi-sectional and have an enclosed floor area of not less than one thousand square feet;”
  • Camping on your landLimited

    Overnight camping in Cave Junction public parks.

    • Camping is allowed only in areas designated for camping.
    • Youth groups may camp overnight by advance permission from the city council.
    “No person shall camp overnight except in areas designated for camping except by permission for youth groups, whose leaders will acquire said permission from the city council in advance.”
  • Manufactured homesAllowed (with conditions)

    Manufactured homes on individual lots in the SR Single-Family Residential District inside Cave Junction city limits.

    • The home must be multi-sectional.
    • Enclosed floor area must be at least 1,000 square feet.
    • The home must meet the specified roof, siding, garage or carport, thermal-envelope, foundation, skirting, and historic-district conditions.
    • The standards do not apply to units existing within the city before the effective date of the ordinance codified in the chapter.

    minimum enclosed floor area: >= 1000 square feet

    “Manufactured homes are permitted on individual lots, subject to all of the following design standards, consistent with ORS 197.307(5). Exception: The following standards do not apply to units which existed within the city prior to the effective date of the ordinance codified in this chapter: 1. Floor Plan. The manufactured home shall be multi-sectional and have an enclosed floor area of not less than one thousand square feet;”
  • Building in a floodplainRequired

    Residential construction and substantial improvements in regulated flood-hazard areas inside Cave Junction city limits.

    • The lowest floor, including basement, must be elevated at least one foot above base flood elevation.
    • Flood-sensitive enclosed areas below the lowest floor must meet the opening or professional-certification requirements.
    • Manufactured homes and recreational vehicles have additional elevation, anchoring, duration, licensing, and utility requirements.

    minimum elevation above base flood elevation: >= 1 foot

    “New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, elevated to a minimum of one-foot above the base flood elevation.”
  • Permit processPartial

    Development and residential construction inside Cave Junction city limits.

    • Obtain a city zoning clearance permit before covered construction, alteration, movement, or change in use.
    • The zoning clearance informs the county building safety department whether the proposal complies with Title 17.
    • Development review or site-plan review is required for new development and modifications, subject to listed maintenance and repair exemptions.
    • The county building safety department issues building permits.
    “Development review or site plan review shall be required for all new developments and modifications of existing developments, except that regular maintenance, repair and replacement of materials (e.g., roof, siding, awnings, etc.), parking resurfacing, and similar maintenance and repair shall be exempt.”

Rules another office applies inside Cave Junction

Cave Junction does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Owner-builder exemptionAvailable (with conditions)

    Owner-built single-family dwellings and adjacent outbuildings inside Cave Junction city limits.

    • The owner must intend to occupy the structure.
    • Structural components must be constructed entirely by the owner or by the owner with unpaid friends or relatives.
    • The exemption concerns ceiling heights, room sizes, and maintenance of specific temperature levels.
    • The building permit must note the exemption; noncompliance requires filing the permit with the county clerk for permanent deed records.
    “Owner-built dwellings and outbuildings shall be exempt from any requirements of the structural code for ceiling heights, room sizes and the maintenance of specific temperature levels in those structures. The exemption shall apply to the new construction, renovation, remodeling or alteration of an owner-built dwelling or outbuilding.”
  • Building code adoptedAdopted

    Residential construction inside Cave Junction city limits is governed by the statewide Oregon Residential Specialty Code.

    • The 2026 ORSC Chapter 1 became effective and mandatory October 1, 2026.
    • The 2026 ORSC construction provisions have a phase-in period and become mandatory April 1, 2027.
    “The division works with building officials, technical committees, advisory boards, and the public to adopt, amend, and interpret the Oregon Residential Specialty Code (ORSC). This code applies to the construction, reconstruction, and repair of one- and two-family dwellings and townhouses.”
  • InspectionsRequired

    Construction or work inside Cave Junction city limits for which an Oregon residential building permit is required.

    • The work must remain accessible and exposed until approved.
    • Foundation, slab or underfloor, mechanical/gas, framing/masonry, and final inspections are required as applicable.
    • Floodplain inspections are determined by the floodplain administrator.
    “Construction or work for which a permit is required shall be subject to inspection by the building official and such construction or work shall remain accessible and exposed for inspection purposes until approved.”
  • Certificate of occupancyRequired

    A change in character, use, or occupancy of a building or structure inside Cave Junction city limits.

    • Certificates are not required for work exempt from permits under Section R105.2.
    • Certificates are not required for accessory buildings or structures.
    “A building or structure shall not be used or occupied in whole or in part, and a change in existing character or use, or a change of occupancy of a building or structure or portion thereof shall not be made, until the building official has issued a certificate of occupancy for such change in character, use or occupancy. [...] Exceptions: 1. Certificates of occupancy are not required for work exempt from permits under Section R105.2. 2. Accessory buildings or structures.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Cave Junction or Josephine County directly.

  • Lot coverage — Lot coverage inside Cave Junction city limits.
  • Building height — Building height inside Cave Junction city limits.
  • Tiny homes — Tiny-home occupancy inside Cave Junction city limits.
  • Septic permit — Septic permitting for property inside Cave Junction city limits.
  • Septic inspection — Septic inspection requirements for property inside Cave Junction city limits.
7 more unanswered
  • Off-grid sanitation
  • Well permit
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Short-term rentals
  • Permit fees

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 Cave Junction publishes no rule on the point, not that none exists. Josephine County’s page lists the county offices to call.

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