Bolthole Index

Marion County, Oregon

Building permits, zoning and land rules in Gervais, Oregon

Gervais, Oregon requires building permits through the city, with plan review and inspections handled by Marion County.1 Gervais sets its own zoning inside city limits.2 Septic inspections stay with Marion County, but city and county pages give conflicting directions for septic applications; confirm the filing office before applying.34

At a glance

Building permits
City handles building permits; Marion County reviews plans and inspects15
Zoning
Gervais has its own residential and other zoning districts2
Septic
Installation/repair permit required; confirm city versus county filing responsibility64
Single-family lot area
6,600 square feet in R-1 and R-2, subject to applicable exceptions78
Manufactured homes
Allowed in R-1 and R-2 subject to the manufactured-home chapter9
Owner-builder
Limited Oregon exemption for room sizes, ceiling heights and temperature requirements; building permit still required10

Who to call

Building permits

Gervais City Hall — building permits and planning inquiries

Starting contact for city building permit and zoning inquiries; ask City Hall to route the parcel question to planning.

(503) 792-4901

592 4th Street

Building permits

Gervais building permit responsibility directory

City building permits and land-use approval; county plan review and inspections for Gervais.

(503) 792-4901

Building permits

Marion County Building Inspection

County plan review and building inspections assigned to Marion County for Gervais.

503-588-5147

[email protected]

5155 Silverton Road NE Salem, OR 97305

Online permits →

Septic permits

Marion County Building Inspection — Onsite Sewage Disposal Program

Septic inspections and clarification of septic application routing inside Gervais.

503-588-5147

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 Gervais means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Gervais, OR?

Gervais assigns building permits and land-use approval to the city, while Marion County handles building plan review and inspections.1 Residential construction in Gervais is governed by the Oregon Residential Specialty Code for single-family and two-family dwellings and townhouses.11 Ask City Hall which building permit applications and trade applications your project needs, and ask Marion County Building Inspection about plan review and inspection scheduling.1213 Oregon’s owner-built exemption covers only specified ceiling-height, room-size and temperature requirements under its qualifying conditions; the exemption still requires a building permit.10

Who handles Gervais building permits and zoning questions?

Start Gervais building permit and zoning inquiries with City Hall at (503) 792-4901.12 Gervais City Hall is at 592 4th Street.12 Marion County Building Inspection can be reached at 503-588-5147 or [email protected] for county review and inspection questions.13 The division of work matters: Gervais handles city land-use approval and building permit issuance, while Marion County performs building plan review and inspections.1 Keep city zoning approval and county inspection arrangements as separate items when discussing a proposed home with the offices.1

Does Gervais have zoning, minimum lot sizes and coverage limits?

Gervais has its own zoning districts inside city limits.2 For a single-family dwelling, the minimum lot area is 6,600 square feet in R-1 and 6,600 square feet in R-2, subject to each district’s stated exceptions.78 R-1 limits building coverage to 45%, parking area coverage to 30%, and combined lot and parking area coverage to 70%.14 R-2 limits building coverage to 50%, parking area coverage to 30%, and combined building and parking area coverage to 70%.15 Ask Gervais City Hall for the parcel’s district and applicable yard setbacks before choosing a home footprint.12

How do septic permits work inside Gervais?

Septic installation or repair inside Gervais requires a septic permit, and Marion County handles septic inspections.616 The Gervais responsibility table assigns site evaluations and installation/repair applications to the city, but Marion County’s septic program says the county issues all septic system permits within Marion County.34 Ask Gervais City Hall and the county Onsite Sewage Disposal Program to resolve that filing-office conflict for your address before submitting a septic application.124 Oregon requires a site evaluation for an undeveloped site never evaluated for septic approval.17 A building within an Oregon sewer district must connect to sewer even when using a composting toilet.18

Can you live in an RV, tiny home or manufactured home in Gervais?

We could not confirm general private-land RV occupancy, temporary camping or tiny-home occupancy rules inside Gervais; ask City Hall for an address-specific land-use answer before buying a unit or planning to live onsite while building.12 Gervais allows single-family manufactured homes in R-1 and R-2 subject to the city’s manufactured-home chapter, with separate standards for manufactured-home parks.9 That manufactured-home permission does not establish permission for RV or tiny-home occupancy; ask Gervais which housing category applies to your proposed unit.912 Oregon’s composting-toilet provisions still require plumbing fixtures to connect to an approved septic system, and buildings within a sewer district still need sewer connection.19

What are the steps to building a home in Gervais?

  1. Ask Gervais City Hall to confirm the parcel’s city zoning district and land-use approval path before selecting a design.212
  2. Check the district’s lot-area and coverage standards with the city before finalizing the site plan.781415
  3. Resolve sewer service or septic application routing with the city and Marion County Onsite Sewage Disposal Program before committing to a wastewater design.1834
  4. Apply through Gervais for the building permit and coordinate county plan review and building inspections.1
  5. Check driveway placement: in R-1 and R-2, driveways must be at least 40 feet from an intersection or half the lot frontage, whichever is greater.2021

What should you check before buying land in Gervais?

Ask Gervais City Hall to confirm utility connection obligations, flood-hazard development requirements, building permit fees and the occupancy approval needed for your project; we could not confirm those city-specific answers.12 Gervais regulates subdivisions and partitions, so a plan to split land needs city land-division review as well as a suitable home site.22 A landowner personally constructing or altering a water-supply well in Oregon needs the state landowner permit, fee and bond before work begins unless using a licensed and bonded well constructor; ask the city whether a private well is acceptable for the parcel.2312 For land outside Gervais city limits, consult the Marion County guide for the county’s unincorporated-area zoning rules.24

Watch-outs

  • Confirm the septic application office with Gervais City Hall and Marion County Onsite Sewage Disposal Program: official pages disagree about city versus county filing responsibility.34
  • We could not confirm private-land RV or tiny-home occupancy in Gervais; obtain a city land-use answer before planning to live onsite.12
  • Gervais minimum lot areas are district-specific and subject to exceptions; ask the city how the standards apply to an existing parcel.78

Sources

  1. Gervais building permit responsibility directory (co.marion.or.us)
  2. Gervais Code § 17.24.020, R-1 permitted uses (Gervais), quoted and re-checked
  3. Marion County Where to Apply for Permits (Gervais), quoted and re-checked
  4. Marion County Building Inspection — Onsite Sewage Disposal Program (co.marion.or.us)
  5. Marion County Where to Apply for Permits (Gervais), quoted and re-checked
  6. Marion County Where to Apply for Permits (Gervais), quoted and re-checked
  7. Gervais Code § 17.24.040, R-1 dimensional standards (Gervais), quoted and re-checked
  8. Gervais Code § 17.28.040, R-2 dimensional standards (Gervais), quoted and re-checked
  9. Gervais Code § 17.24.020, R-1 permitted uses (Gervais), quoted and re-checked
  10. Oregon Revised Statutes, ORS 455.320 (Oregon statewide rule), quoted and re-checked
  11. Oregon Residential Structures Code Program (Gervais), quoted and re-checked
  12. Gervais City Hall — building permits and planning inquiries (gervaisoregon.org)
  13. Marion County Building Inspection (co.marion.or.us)
  14. Gervais Code § 17.24.050, R-1 development standards (Gervais), quoted and re-checked
  15. Gervais Code § 17.28.050, R-2 development standards (Gervais), quoted and re-checked
  16. Marion County Where to Apply for Permits (Gervais), quoted and re-checked
  17. Housing and Onsite Wastewater Management (Oregon statewide rule), quoted and re-checked
  18. What do I do with the finished material? (Oregon statewide rule), quoted and re-checked
  19. What do I do with the finished material? (Oregon statewide rule), quoted and re-checked
  20. Gervais Code § 17.24.050, R-1 development standards (Gervais), quoted and re-checked
  21. Gervais Code § 17.28.050, R-2 development standards (Gervais), quoted and re-checked
  22. Gervais Code § 17.24.050, R-1 development standards (Gervais), quoted and re-checked
  23. Landowner Constructed Wells (Oregon statewide rule), quoted and re-checked
  24. Planning & Zoning (2026 county census)

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 Gervais

Gervais’s own rules

  • InspectionsRequired

    Residential building work inside Gervais city limits; inspections are administered by Marion County under the permit-responsibility table.

    • The City of Gervais table assigns inspections to County while the City column assigns the permit.
    • The cited table does not specify every inspection type or exemption.
    “BUILDING | City | County | Other [...] Inspections |   | X |”
  • Local zoningPresent

    Land inside Gervais city limits; the city code establishes R-1 and R-2 residential zoning districts and other zoning districts.

    “The following uses are permitted in the R-1 district:”
  • Manufactured homesAllowed (with conditions)

    Single-family manufactured homes in Gervais R-1 and R-2 districts.

    • Manufactured homes are subject to Chapter 17.108.
    • Separate manufactured-home-park standards apply where a park is proposed.
    “Single-family dwelling including a single-family manufactured home subject to the provisions of Chapter 17.108, manufactured homes.”
  • Septic permitRequired

    Onsite sewage installation or repair inside Gervais city limits.

    • The City column assigns installation/repair permits to Gervais.
    • Marion County performs septic inspections, and DEQ issues WPCF permits where applicable.
    “ONSITE SEWAGE/SEPTIC PERMITS | City | County | Other [...] Installation/Repair Permit | X |   |”
  • Subdividing landRegulated (with conditions)

    Subdivisions and partitions inside Gervais city limits.

    • R-1 land divisions are reviewed under Chapter 17.160 or 17.164.
    • R-2 land divisions are reviewed under Chapter 17.164 or 17.168.
    • The cited provisions do not provide the complete application procedure.
    “Subdivisions and Partitions. Land divisions shall be reviewed in accordance with the provisions of Chapter 17.160 or 17.164.”

Rules another office applies inside Gervais

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

  • Building code adoptedAdopted

    Residential construction inside Gervais city limits.

    • The Oregon Residential Specialty Code applies to one- and two-family dwellings and townhouses.
    “Residential code adoption - The division works with the board, local building officials and industry stakeholders to adopt each edition of the ORSC.”
  • Minimum lot sizeSpecified

    Single-family dwellings in Gervais R-1.

    • The cited standard is subject to Chapter 17.124 general exceptions and Chapter 17.136 variance.

    minimum lot area: 6600 square feet (single-family dwelling)

    “Single-family dwelling 6,600 square feet”
    One more reviewed finding on this topic
  • Lot coverageSpecified

    Development in Gervais R-1.

    maximum building coverage: 45 percent · maximum parking area coverage: 30 percent · combined maximum lot and parking area coverage: 70 percent

    “Maximum building coverage 45% Maximum parking area coverage 30% Combined maximum lot and parking area coverage 70%”
    One more reviewed finding on this topic
  • Who permits septicMixed (with conditions)

    Onsite sewage/septic work inside Gervais city limits.

    • The Marion County table assigns land-use approval, site evaluation, installation/repair permits, and existing-system evaluation to the City column; inspections are assigned to the County column; WPCF permits are assigned to DEQ.
    • The table identifies administrative responsibility but does not itself state all substantive septic standards.
    “ONSITE SEWAGE/SEPTIC PERMITS | City | County | Other [...] Installation/Repair Permit | X |   | [...] Inspections |   | X | WPCF Permit |   |   | DEQ”
  • Septic inspectionRequired

    Onsite sewage/septic work inside Gervais city limits.

    • The Marion County table assigns inspections to the County column.
    “ONSITE SEWAGE/SEPTIC PERMITS | City | County | Other [...] Inspections |   | X |”
  • Driveway accessRequired

    Driveways serving development in Gervais R-1.

    • Driveways must be separated from an intersection by at least 40 feet or one-half the lot frontage, whichever is greater.
    • The Marion County permit table separately lists driveway approval as City, except county roads.

    minimum separation from intersection: >= 40 feet (or one-half the lot frontage, whichever is greater)

    “Driveways. Driveways shall be separated from an intersection by at least forty (40) feet or one-half the lot frontage, whichever is greater.”
    One more reviewed finding on this topic
    • Required — Driveways serving development in Gervais R-2.
      “Driveways. Driveways shall be separated from an intersection by at least forty (40) feet or one-half the lot frontage, whichever is greater.”

Still unanswered

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

  • Certificate of occupancy — Certificates of occupancy inside Gervais city limits.
  • Minimum dwelling size — Primary dwellings inside Gervais residential districts.
  • Living in an RV — RV occupancy on private land inside Gervais city limits.
  • Camping on your land — Temporary camping on private land inside Gervais city limits.
  • Tiny homes — Tiny-home occupancy inside Gervais city limits.
7 more unanswered
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Building in a floodplain
  • 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 Gervais publishes no rule on the point, not that none exists. Marion County’s page lists the county offices to call.

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