Bolthole Index

Morrow County, Oregon

Building permits, zoning and land rules in Morrow County, Oregon

63Index Score / 100
#5 of 36 in Oregon

Unincorporated Morrow County, Oregon requires building permits and administers zoning for new uses and construction.12 The county contracts with the City of Boardman for building and electrical permits, while UCo Health handles most onsite septic permits after Morrow County Planning approves a land-use compatibility statement.34

At a glance

Building permit
Required; the City of Boardman administers permits for Morrow County13
Zoning
County zoning applies in unincorporated areas; cities administer their own rules25
Septic
County Planning clears land use; UCo Health permits most onsite systems4
RV living
Limited outside approved RV parks; temporary exceptions apply67
Manufactured-home size
At least 745 sq. ft. in farm or forest zones; 1,000 sq. ft. in listed residential zones89
Owner-builder
A narrow structural-code exemption exists, but a building permit is still required10
Minimum lot size
Varies by zone and the kind of parcel being created111213

Who to call

Building permits

City of Boardman Building Department

Building and electrical permits and building inspections for Morrow County

541-626-7011

200 City Center Circle, Boardman, Oregon 97818

Online permits →

Planning & zoning

Morrow County Planning Department

Zoning, land-use applications, zoning clearance, rural addressing, septic land-use compatibility statements and floodplain administration

541-922-4624

PlanningDepartment@morrowcountyor.gov

215 NE Main Ave., Irrigon, OR 97844

Septic permits

UCo Health Onsite Septic Program

Site evaluations, construction permits, pre-cover inspections, records and authorization notices for most onsite septic systems in Morrow County

health@umatillacounty.net

200 SE 3rd Street, Pendleton, OR 97801

Roads & driveways

Morrow County Public Works Department

County road access permits and county road right-of-way permits

541-989-9500

365 West Highway 74, Lexington, OR 97839

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Off-grid gear

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

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Do you need a building permit in Morrow County, Oregon?

Yes. A building permit is required for covered residential construction in Morrow County, and the Oregon Residential Specialty Code governs one- and two-family dwellings and townhouses.114 The county's construction checklist says other construction needs a building permit when it is over 200 square feet and a zoning permit when it is over 120 square feet.15

Permitted work must remain accessible for inspection until it is approved, with inspections occurring at stages such as foundation, rough mechanical and framing.16 A new dwelling or townhouse also needs a certificate of occupancy before occupancy unless the building official issues a temporary certificate.17 A qualifying owner-builder may receive a limited exemption from structural-code rules for ceiling height, room size and temperature maintenance, but Morrow County still issues a building permit.10

Barns, sheds and other farm buildings can qualify for an agricultural-building exemption from the structural building permit, but only after a zoning permit is in hand; the exemption never covers dwellings, and electrical, plumbing and septic approvals still apply.18 In the Forest Use zone, an agricultural building over 120 square feet is allowed subject to zoning-permit approval and cannot later be converted to another use.19

Who is the Morrow County building department, and how do you reach them?

The City of Boardman Building Department issues building permits for Morrow County under the county's contracting arrangement.3 Call 541-626-7011 or use the department's online permit portal; the office is at 200 City Center Circle in Boardman.3

Start with Morrow County Planning before submitting building plans because Planning processes land-use applications in unincorporated areas and clears zoning matters.20 County Planning is at 215 NE Main Ave. in Irrigon, can be reached at 541-922-4624, and uses PlanningDepartment@morrowcountyor.gov for general inquiries.20 Building-code fees vary by the work type: residential structural new construction uses the applicable valuation table, while alteration and repair valuation is determined by the building official.21 The published county fee schedule separately covers planning, zoning, floodplain and related applications.22

Does Morrow County have zoning?

Yes. Morrow County administers zoning in unincorporated areas, while Boardman, Heppner, Ione, Irrigon and Lexington have their own municipal maps or codes.25 A zoning permit is required for new uses, construction and additions in the unincorporated county, and for structures over 120 square feet.23 The county also regulates subdivisions, partitions and other land development.24

Parcel size and setbacks depend on the zone. Creation of a new parcel in the county's EFU zone generally has a 160-acre minimum, subject to listed exceptions; the RR-1 zone has a 2-acre minimum lot area, and the RR-10 zone has a 10-acre minimum.111213 EFU setbacks vary by roadway classification and include separate side, rear and stream standards.25 These are zone-specific standards, not a universal homesite minimum. Ask County Planning to identify the parcel's zone and allowed use before relying on a listing.20

How do septic permits work in Morrow County?

For an onsite system, first obtain a Land Use Compatibility Statement from Morrow County Planning, then take the authorized form to UCo Health for the required septic permits.2026 UCo Health conducts site evaluations, issues construction permits and authorization notices, and performs pre-cover inspections for most systems in Morrow County.27 Oregon DEQ retains permitting authority for high-strength waste and systems with flows over 2,500 gallons per day.2829

Where construction will not use public sewer, the county's construction process requires UCo Health sanitation approval for an onsite septic system.30 Only 18.1% of mapped soils lack severe limitations for a conventional septic drain field, so make the site evaluation a purchase contingency.31 A composting toilet does not eliminate wastewater approval: other household fixtures still need an approved wastewater system, and a graywater reuse system paired with septic requires permits.32

A private well is a separate approval: a landowner who drills their own water supply well needs a state permit, a permit fee of $550 and a $10,000 bond or irrevocable letter of credit, unless a licensed and bonded well constructor does the work.33 Using well water also requires a groundwater application.34

Can you live in an RV or tiny home on your land in Morrow County?

Full-time RV occupancy is limited in unincorporated Morrow County outside an approved RV park. During construction of a primary dwelling, an RV may be used for up to 6 months under the dwelling's zoning permit, with one extension of up to 6 more months; visitor housing in a residential or farm-use zone is limited to 30 days in a 12-month period.6 Seasonal camping by the owner or lessee in the Forest Use Zone requires a zoning permit and rural address.35 An approved RV park may allow indefinite stays only when the RV has lawful water, electrical and sewage connections, is winterized and skirted, has no outdoor storage, stays within its designed occupancy, and follows park rules filed with County Planning.36

Morrow County's rules do not specifically answer tiny-home occupancy, so ask County Planning how a proposed unit will be classified.20 A manufactured home in a farm or forest zone generally must be a 14-foot single-wide or larger and contain at least 745 square feet; the residential-zone standards apply instead when the site is within one-half mile of a listed residential-zone boundary.8 A manufactured home in a Rural Residential, Farm Residential or Suburban Residential zone must be multi-sectional and contain at least 1,000 square feet, and the unit generally cannot be more than 10 years old when the siting request is received.937

How do you build a home in Morrow County, step by step?

For a new homesite in unincorporated Morrow County, use this order:

  1. Ask Morrow County Planning to confirm the zone, dwelling use and zoning approval.2
  2. Obtain sanitation approval from UCo Health for an onsite septic system, beginning with the county's Land Use Compatibility Statement.4
  3. If access is from a county road, obtain the required access permit from Morrow County Public Works; a state-highway driveway follows ODOT standards.38
  4. Obtain a rural address through County Planning after access approval.15
  5. Submit plans and building-permit applications to the City of Boardman Building Department.3
  6. Keep work exposed for the required inspections and obtain the certificate of occupancy before moving into a new dwelling.1617

Development in a mapped special flood hazard area needs a floodplain development permit before construction begins, administered through County Planning.39

What should you check before buying land in Morrow County?

Begin with legal access, zoning and buildability rather than the listing description. Every lot must reach a public right-of-way directly, by private roadway or by easement, and a driveway onto a county facility requires Public Works approval.38 Ask County Planning to confirm the parcel's zone, setbacks, flood status, subdivision history and whether a dwelling is allowed.22439

For land in a subdivision, required sewer infrastructure must serve the subdivision and connect to existing mains unless an interim system is jointly authorized, while water lines and fire hydrants must be installed when required by the county, affected city and serving water system.4041 For other rural parcels, verify the water source and make septic suitability a purchase contingency because only 18.1% of mapped soils are rated without severe limits for a conventional drain field.31 The effective property-tax rate is about 0.8%, and the median annual property-tax bill is $1,885.4243

Watch-outs

  • A rural listing's acreage does not establish that a dwelling is allowed; Morrow County's parcel-creation minimums and setbacks vary by zone.111213
  • Only 18.1% of mapped soils are rated without severe limits for a conventional septic drain field, so obtain a site evaluation before treating a parcel as buildable.31
  • Morrow County's specific rules for tiny-home occupancy and a general minimum size for site-built dwellings could not be confirmed; ask County Planning for a written parcel-specific answer before purchase.20
  • Development in a special flood hazard area requires a permit before construction or development begins.39

Sources

  1. Morrow County OR - Building Department (2026 county census)
  2. Clone of Welcome to the Planning Department (2026 county census)
  3. City of Boardman Building Department (cityofboardman.com)
  4. Morrow County OR - UCo Health (Septic Approvals) (2026 county census)
  5. Application Information, quoted and re-checked
  6. Clone of Code Enforcement, quoted and re-checked
  7. Morrow County Zoning Ordinance Article 6, quoted and re-checked
  8. Morrow County Zoning Ordinance Article 4 (01.08.25), quoted and re-checked
  9. Morrow County Zoning Ordinance Article 4 (01.08.25), quoted and re-checked
  10. 2023 Oregon Residential Specialty Code — Chapter 1, quoted and re-checked
  11. Morrow County Zoning Ordinance Article 3 Section 3.010: Exclusive Farm Use, EFU Zone, quoted and re-checked
  12. Morrow County Zoning Ordinance Article 3 Section 3.040: Rural Residential, RR 1 Zone, quoted and re-checked
  13. Morrow County Zoning Ordinance Article 3 Section 3.042: Rural Residential Ten, RR-10 Zone, quoted and re-checked
  14. Residential Structures Code Program, quoted and re-checked
  15. Permit Process Checklist 2026, quoted and re-checked
  16. 2023 Oregon Residential Specialty Code — Chapter 1, quoted and re-checked
  17. 2023 Oregon Residential Specialty Code — Chapter 1, quoted and re-checked
  18. Agriculture/Equine Building Exemption Request, quoted and re-checked
  19. Morrow County Zoning Ordinance Article 3 Section 3.020 (01.08.26), quoted and re-checked
  20. Morrow County Planning Department (morrowcountyor.gov)
  21. Valuation and fee requirements by work/record type (Oregon statewide rule), quoted and re-checked
  22. Planning Department Fee Schedule, quoted and re-checked
  23. Clone of Welcome to the Planning Department, quoted and re-checked
  24. Subdivision Ordinance, quoted and re-checked
  25. Morrow County Zoning Ordinance Article 3 Section 3.010: Exclusive Farm Use, EFU Zone, quoted and re-checked
  26. Application Information, quoted and re-checked
  27. UCo Health Onsite Septic Program (morrowcountyor.gov)
  28. UCo Health (Septic Approvals in Morrow County), quoted and re-checked
  29. UCo Health (Septic Approvals in Morrow County), quoted and re-checked
  30. Permit Process Checklist 2026: For Construction in Morrow County, quoted and re-checked
  31. 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
  32. What do I do with the finished material? (Oregon statewide rule), quoted and re-checked
  33. Landowner Constructed Wells, quoted and re-checked
  34. Apply for a Water Use Permit, quoted and re-checked
  35. Morrow County Zoning Ordinance Article 7, quoted and re-checked
  36. Morrow County Zoning Ordinance Article 6 (04032024), quoted and re-checked
  37. Morrow County Zoning Ordinance Article 4, quoted and re-checked
  38. Morrow County Subdivision Ordinance, quoted and re-checked
  39. Morrow County Zoning Ordinance Article 3 Section 3.100 Flood Hazard Overlay Zone, quoted and re-checked
  40. Morrow County Subdivision Ordinance, quoted and re-checked
  41. Morrow County Subdivision Ordinance, quoted and re-checked
  42. Effective property tax rate: Bolthole Index county data
  43. Median property tax bill: Bolthole Index county data

Written October 10, 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.

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Compared with neighboring counties

Like all 6 of its neighbors, Morrow County requires a building permit for a home.

RuleMorrow CountyGilliam CountyUmatilla CountyWheeler CountySherman CountyGrant CountyUnion County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsUCo HealthUmatilla County Public HealthUmatilla CountyOR DEQ Onsite Wastewater ProgramNorth Central Public Health DistrictCounty Planning Dept.Harney County Onsite Program

County locator

Morrow County in Oregon

63
County map
Morrow County highlighted among the Oregon counties · colored by Index score

How Morrow County scores

Seclusion90100% ev.
Self-Sufficiency40100% ev.
Admin Boringness42100% ev.
Durability45100% ev.
Property Autonomy72100% ev.
Carry Cost76100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$312kTypical home
0.8%Property tax
$2,202Land / acre
14"Annual rain
16.5% of yrsSevere drought
7.6 / yr (+6)Mid-century 100°F days
35.6 daysMid-century dry spell
0.68" (+5%)Mid-century 1-day rain
1.17×Wildfire change factor
100%Forward climate coverage
$1,019Home insurance / yr
2.2% / yrInsurance growth
1.35%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
424People within 30 min
245,135People within 2 hr
2,022Radius comparison (15 mi)
6.1People / sq mi
16.8%Federal land
61.6%Land at 15% slope or less
18.1%Soils rated "not limited" for septic (strict USDA rating)
231,379 acWorkable land screen
15.1%Wooded land
30.7 tonsBiomass / forest ac
50.1°FAvg temp

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Cities and towns in Morrow County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Ione · Irrigon · Town of Lexington

Answers from the rulebook for Morrow County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Morrow County rules

  • County-wide zoningPresent (with conditions)

    Land uses and development in unincorporated Morrow County, outside the city limits of Boardman, Heppner, Ione, Irrigon, and Lexington.

    • The Morrow County Planning Department administers the county land-use regulations and Morrow County Zoning Ordinance in unincorporated areas.
    • If property is inside city limits, the applicant must contact the corresponding city.
    • A zoning permit is required for new uses, construction, and additions when the use is permitted outright or after land-use approval; the application requires the appropriate fee under the current fee schedule, a completed site plan, and the legal landowner's signature.
    • The zoning permit requirement is stated as required for all structures over 120 square feet.

    structure size threshold: > 120 sq. ft. (The source states the zoning permit is required for all structures over 120 sq. ft.)

    “The Planning Department oversees and guides land uses in all unincorporated portions of Morrow County outside the city limits of Boardman, Heppner, Ione, Irrigon and Lexington. Department functions include public service, development review, and both short and long-range planning. Collectively the Planning Department provides technical assistance and information to the public and local officials, administers the county land use regulations, supports a variety of planning-associated programs, and generates citizen interest, input and participation in the planning process. A primary role is administering the Morrow County Zoning Ordinance where focus is placed on compliance with state and local laws.”
  • Local zoningVaries (with conditions)

    Zoning across Morrow County, aggregated across the county-administered unincorporated area and incorporated cities.

    • The county administers land-use applications and the Morrow County Zoning Ordinance in unincorporated areas.
    • For property inside city limits, the county directs applicants to contact the corresponding city; therefore incorporated-city zoning is administered by the applicable city rather than by the county.
    • The county's City Resources page identifies city-specific zoning maps, development codes, or city codes for Boardman, Heppner, Ione, Irrigon, and Lexington.
    “The Planning Department is responsible for processing land use applications in the unincorporated areas of Morrow County (if the property is inside any city limits, you will need to contact the corresponding city).”
  • Zoning districtsPublished (with conditions)

    County zoning districts and overlay zones in Morrow County, including the county zoning map and amendments.

    • The ordinance identifies the listed base and overlay zones, including EFU, RRI, FU, RSC, UDWH, RR, FR, RR-10, SR, SR-2A, C-G, TC, M-G, AI, SAI, PI, UADM, RLI, ALI, A-A, A-H, ASC, FP, LU, UMCD PI, SO, PO, SRO, and Historic Buildings and Sites.
    • Each listed zone has a code section and an effective date in Section 2.010; the effective dates vary by zone.
    • Zone boundaries are indicated on the Morrow County Zoning Map, and boundaries may be modified by zoning map amendments adopted by ordinance.
    • A certified print of the adopted zoning map or map amendment is maintained in the County Clerk's office.
    • If a mapped boundary divides a lot or parcel between two zones, the entire lot or parcel is deemed to be in the zone containing the greater area, subject to the stated maximum adjustment of 100 feet.

    published zone designations: EFU, RRI, FU, RSC, UDWH, RR, FR, RR-10, SR, SR-2A, C-G, TC, M-G, AI, SAI, PI, UADM, RLI, ALI, A-A, A-H, ASC, FP, LU, UMCD PI, SO, PO, SRO, Historic Buildings and Sites · maximum mapped-boundary adjustment: <= 100 feet (Applies when a zone boundary divides a lot or parcel and the greater-area rule is used.)

    “SECTION 2.010. IDENTIFIED ZONE DESIGNATIONS. For the purpose of this ordinance, the following zones are hereby identified. [...] SECTION 2.020. LOCATION OF ZONES. The boundaries for the zone listed in this ordinance are indicated on the Morrow County Zoning Map which is hereby adopted by ordinance. The boundaries shall be modified in accordance with zoning map amendments which shall be adopted by ordinance.”
  • Minimum dwelling sizeSpecified

    Manufactured homes permitted as single-family dwellings on individual lots or parcels in Morrow County Rural Residential, Farm Residential, or Suburban Residential zones.

    • The manufactured home must be multi-sectional, double-wide or larger.
    • The manufactured home must be no more than ten years old when the Planning Department receives the siting request application.
    • The home must be placed on an excavated and back-filled foundation and enclosed so it is no more than 12 inches above grade.
    • The home must have a pitched roof with a nominal slope of at least three feet in height for each twelve feet in width.
    • The home must satisfy the ordinance's thermal-envelope, exterior-material, garage or carport, accessory-structure, and removal requirements.
    • Manufactured homes may only be used as single-family dwellings; changing the use requires Planning Commission approval and compliance with ORS 446.245.

    minimum dwelling floor area: >= 1000 square feet (Applies to manufactured homes in Rural Residential, Farm Residential, or Suburban Residential zones.)

    “Be multi-sectional (double-wide or larger); be a minimum of 1000 square feet”
    One more reviewed finding on this topic
  • Minimum lot sizeSpecified

    Creation of new parcels in Morrow County's Exclusive Farm Use (EFU) Zone.

    • A division for certain permitted nonresidential uses may be approved below 160 acres if the parcel is no larger than the minimum size necessary for the use as allowed in ORS 215.263.
    • Additional exceptions apply to specified nonfarm dwellings, conservation or public-open-space transactions, churches, nonfarm uses, and urban-growth-boundary divisions.
    • The source identifies the document as Morrow County Zoning Ordinance Article 3 Section 3.010 (01.08.26).

    minimum parcel size: 160 acres (subject to exceptions in Section N)

    “1. Minimum Parcel Size. The minimum size for creation of a new parcel shall be 160 acres.”
    2 more reviewed findings on this topic
  • SetbacksSpecified

    Minimum yards and stream setbacks in Morrow County's Exclusive Farm Use Zone.

    • Front setbacks vary by roadway classification: local minor collector or marginal-access street, major collector, or arterial.
    • The county may approve other provisions for combining accesses.
    • Stream setbacks apply to sewage-disposal installations and to structures, buildings, and similar permanent fixtures along streams or lakes.

    front setback, local minor collector or marginal-access street: 20 feet (unless other provisions for combining accesses are provided and approved by the County) · front setback, major collector: 30 feet (unless other provisions for combining accesses are provided and approved by the County) · front setback, arterial: 80 feet (unless other provisions for combining accesses are provided and approved by the County) · side yard: 20 feet (street side of a corner lot or parcel is 30 feet) · rear yard: 25 feet · stream setback: 100 feet (measured at right angles to the high-water line or mark)

    “O. Yards. In an EFU Zone, the minimum yard setback requirements shall be as follows: 1. The front yard setback from the property line shall be 20 feet for property fronting on a local minor collector or marginal access street ROW, 30 feet from a property line fronting on a major collector ROW, and 80 feet from an arterial ROW unless other provisions for combining accesses are provided and approved by the County. 2. Each side yard shall be a minimum of 20 feet except that on corner lots or parcels the side yard on the street side shall be a minimum of 30 feet. 3. Rear yards shall be a minimum of 25 feet.”
  • Living in an RVLimited

    Residential use of recreational vehicles in unincorporated Morrow County outside approved RV parks

    • During construction of a primary dwelling, the RV use may not exceed six months, with one extension period not exceeding six additional months; the dwelling's zoning permit must authorize the temporary use.
    • Temporary visitor housing in a residential or farm-use zone may not exceed 30 days in any 12-month period.
    • Seasonal recreational use by the landowner or lessee in the Forest Use Zone requires a zoning permit and rural address.
    • A recreational vehicle may be used on a lot with a manufactured or single-family dwelling rendered uninhabitable by specified natural disasters until repair/replacement and occupancy, a local-government determination of unreasonable delay, or 24 months after the dwelling became uninhabitable.
    • The county code-enforcement page states that the only other lawful residential RV use is a leased spot within an approved RV park.

    construction-period occupancy: <= 6 months (one extension period not exceeding six additional months) · visitor occupancy: <= 30 days per 12 months (temporary housing for visitors of the primary residence) · natural-disaster occupancy: <= 24 months (subject to earlier termination events stated in Article 7)

    “shall not be used for housing or residential purposes except:”
    2 more reviewed findings on this topic
    • Allowed (with conditions) — Occupancy of recreational vehicles in an approved recreational vehicle park governed by Morrow County zoning
      “Recreational Vehicles may be permitted to stay in RV Parks indefinitely provided that the following conditions are met:”
    • Allowed (with conditions) — RV occupancy in an approved RV park in unincorporated Morrow County
      “Recreational Vehicles may be permitted to stay in RV Parks indefinitely provided that the following conditions are met:”
  • Camping on your landLimited

    Seasonal recreational camping by the landowner or lessee in the unincorporated Forest Use Zone

    • A zoning permit and rural address are required.
    • The cited provision describes seasonal recreational use, including summer camping or hunting season, rather than permanent residential occupancy.

    use duration: seasonal (Landowner or lessee use in the Forest Use Zone)

    “seasonal recreational [...] use [...] in the Forest Use Zone”
  • Manufactured homesLimited

    Manufactured homes used as single-family dwellings on individual lots or parcels in Morrow County farm, forest, Rural Residential, Farm Residential, and Suburban Residential zones

    • In farm or forest zones, the unit must be at least a 14-foot single-wide or multi-sectional and contain at least 745 square feet; if within one-half mile of a residential-zone boundary, the residential-zone standards apply.
    • The unit must generally have been manufactured no more than ten years before the Planning Department receives the siting request and bear the Oregon Department of Commerce Insignia of Compliance; used units require inspection by a certified building official before installation and occupancy.
    • In Rural Residential, Farm Residential, or Suburban Residential zones, the unit must be multi-sectional, at least 1,000 square feet, no more than ten years old, on an excavated and back-filled foundation no more than 12 inches above grade, with specified roof, thermal-envelope, siding, and garage/carport requirements.
    • Manufactured homes are to be used only as single-family dwellings; any change of use requires Planning Commission approval and compliance with ORS 446.245.

    minimum floor area near farm/forest zones: >= 745 square feet (Farm or forest zone standards) · minimum floor area in residential zones: >= 1000 square feet (Rural Residential, Farm Residential, or Suburban Residential zones) · manufactured age: <= 10 years (Measured before receipt of siting request application)

    “Be multi-sectional (double-wide or larger); be a minimum of 1000 square feet; and be manufactured no more than ten years”
  • Who permits septicMixed (with conditions)

    Most onsite septic systems located in Morrow County; UCo Health administers the local onsite septic program for Morrow County.

    • UCo Health assumed onsite septic program responsibilities as of May 3, 2019.
    • DEQ retains authority for licensing contractors and pumpers and for permitting systems with high-strength waste or flows over 2,500 gallons per day.

    flow threshold: > 2500 gallons per day (DEQ retains permitting authority for systems with flows over 2,500 gallons per day.)

    “transferred from Oregon Department of Environmental Quality (DEQ) to UCo Health.”
  • Septic permitLimited

    Most onsite septic systems located in Morrow County for which UCo Health administers the onsite septic program.

    • UCo Health assumed onsite septic program responsibilities in Morrow County on May 3, 2019.
    • UCo Health conducts site evaluations, issues construction permits, conducts pre-cover inspections, stores historical records, and issues authorization notices for most septic systems.
    • DEQ retains permitting authority for systems with high-strength waste and systems with flows over 2,500 gallons per day.
    • Applications for site evaluations and permits may be obtained from Umatilla County Health Department or Morrow County Planning Department.
    “UCo Health is now responsible for conducting site evaluations, issuing construction permits [...] for most septic systems located in Morrow County.”
  • Septic inspectionLimited

    Onsite septic installations, repairs, replacements, and inspections in Morrow County.

    • Morrow County Planning requires a Land Use Compatibility Statement for onsite septic installations, repairs, replacements, and inspections.
    • After county authorization, the LUCS goes to Umatilla County Public Health for the requisite permits.
    • The county page directs applicants to Umatilla County Public Health for all onsite septic permits and inspections.
    • The UCo Health page states that UCo Health conducts pre-cover inspections for most septic systems in Morrow County.
    • DEQ retains permitting authority for high-strength-waste systems and systems with flows over 2,500 gallons per day.
    “A Land Use Compatibility Statement (LUCS) is required from our department for onsite septic installations, repairs, replacements and inspections. Once completed and authorized by our department, the form will then need to go to Umatilla County Public Health for the requisite permits. For all on-site septic permits and inspections please contact Umatilla County Public Health.”
  • Off-grid sanitationLimited

    Onsite septic sanitation for construction in Morrow County where public sewer is not used.

    • Morrow County's official construction checklist requires sanitation approval from Umatilla County Public Health for an onsite septic system.
    • This claim does not establish permission for composting toilets, pit toilets, graywater-only systems, or other non-septic off-grid sanitation methods.
    • Additional zoning, building, health, and septic requirements may apply.
    “Sanitation Approval - Umatilla County Public Health (for on-site septic system)”
  • Mandatory utility hookupConditional

    Sanitary sewer infrastructure in Morrow County subdivisions.

    • Sanitary sewers are required as applicable to serve the subdivision and connect to existing mains.
    • If connection to an affected city sewer system is not possible, the affected city and county may jointly authorize an interim system.
    • The interim system requires adequate lot areas considering physical characteristics and sewer laterals designed for future connection to a sewage disposal system to be installed and sealed.
    • Design must account for capacity and grade to allow desirable extension beyond the subdivision.
    “Sanitary sewers as required shall be installed to serve the subdivision”
    One more reviewed finding on this topic
    • Conditional — Water infrastructure in Morrow County subdivisions.
      “Water lines and fire hydrants serving each building site in the subdivision”
  • Agricultural exemptionConditional

    Agricultural or equine building structural-code exemption requests in unincorporated Morrow County.

    • The exemption applies only to the structural permit; electrical, mechanical, boiler, plumbing, and septic permits must still be obtained when applicable.
    • A valid zoning permit must be obtained before submitting the exemption request.
    • The Planning Department reviews whether the proposed structure qualifies.
    • The owner must sign and record an Agricultural Building Agreement Restrictive Covenant with the Morrow County Clerk and submit a copy to Planning.
    • If the building contains plumbing, sanitation approval from DEQ is required.
    • Electrical, mechanical, and plumbing permits may be obtained from the City of Boardman Building Department after approval.
    • The building must be located on a farm and used in the operation of the farm.
    • The building may not be used for a residential or non-agricultural purpose; a building permit is required before conversion to a non-agricultural use.
    • The certification excludes dwellings, qualifying structures with 10 or more persons present at one time, State Fire Marshal-regulated structures, places used by the public, and structures located in a designated flood zone.

    zoning permit required before exemption request: true · exemption scope: structural building permit only (Electrical, plumbing, mechanical, elevator, and boiler permits are required.)

    “Prior to submitting request, a valid Zoning Permit must be obtained.”
    One more reviewed finding on this topic
    • Conditional — Agricultural buildings in Morrow County's Forest Use (FU) Zone, outside incorporated city boundaries.
      “An agricultural building, as defined in ORS 455.315, customarily provided in conjunction with farm use or forest use larger than 120 square feet. A person may not convert an agricultural building authorized by this section to another use.”
  • Subdividing landRegulated (with conditions)

    Subdivision, partitioning, and other land development in Morrow County under the County Subdivision Ordinance.

    • The ordinance establishes minimum standards governing approval of land development, including subdivision and partitioning, and other land-development standards necessary to carry out the County Comprehensive Plan and promote public health, safety, and general welfare.
    “The Subdivision Ordinance details minimum standards for governing the approval of land development, including subdivision and partitioning and other land development standards as necessary to carry out the County Comprehensive Plan and to promote the public health, safety and general welfare of the citizens of Morrow County, Oregon.”
  • Driveway accessRequired

    Private access driveways and lots in Morrow County subdivision and county-road access contexts.

    • Driveways onto state highways must comply with ODOT Access Management Standards.
    • Driveways onto county facilities require an access permit from the Morrow County Department of Public Works.
    • Private access driveways not meeting the listed dimensional standards require an access variance.
    • Exiting vehicles must have an unobstructed view meeting county sight-distance requirements.
    • Unpaved driveways connecting to paved roadways require a paved driveway apron under Public Works standards.
    • All lots must have access to a public right-of-way, directly, by private roadway, or by easement.

    single-family residential driveway width: 10-24 feet (access variance required if standards are not met) · multi-family residential driveway width: 24-30 feet (access variance required if standards are not met) · commercial driveway width: 24-40 feet (access variance required if standards are not met) · industrial driveway width: 30-40 feet (access variance required if standards are not met)

    “Driveways onto County facilities, which require an access permit from the Morrow County Department of Public Works”
  • Building in a floodplainRequired

    Construction or development, including structures, manufactured homes, fill, and other activities, within areas of special flood hazard in Morrow County.

    • The ordinance applies to all areas of special flood hazards within Morrow County jurisdiction.
    • The application may require scaled plans showing location, dimensions, elevations, structures, fill, storage, and drainage facilities.
    • Required information includes lowest-floor elevation, flood-proofed elevation, professional certification for non-residential flood-proofing, and description of watercourse alteration or relocation.
    • Development in the Flood Hazard Overlay Zone may be required to submit an environmental assessment for FEMA threatened- and endangered-species mitigation requirements.
    • The Planning Director administers the ordinance and reviews whether necessary federal, state, or local approvals have been obtained.
    • Residential construction with available base-flood data must elevate the lowest floor at least 1 foot above base-flood elevation.
    • For subdivisions or developments containing at least 50 lots or 5 acres, whichever is less, base-flood elevation data must be generated when unavailable from another authoritative source.

    residential lowest-floor elevation: >= 1 foot above base flood elevation (where base-flood elevation data has been provided) · floodplain application threshold for generated base-flood data: 50 lots or 5 acres (whichever is less, when data is unavailable from another authoritative source)

    “A development permit shall be obtained before construction or development begins within any area of special flood hazard established in Section 3.2.”
  • Permit feesPublished (with conditions)

    Morrow County Planning Department land-use, zoning, floodplain, access-related, and other listed planning applications.

    • The fee schedule is effective January 22, 2026.
    • A 10% long-range planning surcharge applies per land-use application.
    • A Floodplain Development Permit is listed at $250 and a Floodway Development Permit with flood study at $500.
    • Access or Road Approach Permit fees are governed by the County Public Works fee schedule.
    • Application-withdrawal refunds are discretionary and limited by the withdrawal stage; no refund is available after a final decision.
    • An application made to resolve a code violation may be subject to twice the normal application fee.

    long-range planning surcharge: per 10 percent (per land-use application) · floodplain development permit: 250 USD · floodway development permit with flood study: 500 USD

    “Planning Department Fee Schedule Effective January 22, 2026 Long Range Planning Surcharge 10% per land use application”
  • Permit processPublished (with conditions)

    Construction in Morrow County, including new dwellings, replacement dwellings, manufactured-home parks, and other construction.

    • For a new site, the checklist requires zoning approval, sanitation approval where applicable, a road access permit, a rural address, and building permits through the City of Boardman.
    • For replacement construction, the checklist omits the access permit and rural-address steps shown for a new site.
    • Other construction requires a zoning permit over 120 square feet and building permits over 200 square feet.
    • Sanitation approval may be from Oregon DEQ when the system exceeds 2,500 gallons per day.
    • Manufactured-home setup permits are required when applicable.

    zoning permit threshold for other construction: > 120 square feet · building permit threshold for other construction: > 200 square feet · DEQ sanitation threshold: > 2500 gallons per day

    “FOR CONSTRUCTION IN MORROW COUNTY I. DWELLINGS NEW SITE: 1. Zoning Permit - County Planning Dept.”

Oregon rules that apply here

  • Building permitRequired

    Construction, enlargement, alteration, repair, or movement of detached one- or two-family residential buildings or structures in Morrow County under Oregon's statewide residential permitting rules.

    • The Oregon page states that its general residential descriptions apply only to detached one- or two-family dwellings.
    • Work exempt from a building permit may still require mechanical, electrical, or plumbing permits.
    • Local land-use, planning, and zoning laws must be considered first, and other local requirements may apply before building.
    • Work that does not meet all parameters of a particular building-permit exemption requires a local building permit.
    • Examples of listed building-permit exemptions include certain nonhabitable detached one-story accessory structures under 200 square feet and under 15 feet in average roof height; certain patio, porch, or deck covers not exceeding 200 square feet or 12 feet in average roof height and at least three feet from property lines; porches or decks not more than 30 inches above adjacent grade; and certain fences less than seven feet high.
    • Morrow County contracts with the City of Boardman for building permits.
    “A building p​ermit is required to construct, enlarge, alter, repair, or move a residential building or structure.”
  • Owner-builder exemptionConditional

    Owner-built single-family residences and adjacent auxiliary structures in Morrow County constructed entirely by the owner who intends to occupy them, or by the owner with unpaid assistance from friends and relatives.

    • The owner must be the title owner or contract purchaser shown on the last available complete assessment roll.
    • The owner must not have used the exemption during the five years before applying.
    • The exemption applies to new construction, renovation, remodeling, or alteration of an owner-built dwelling or outbuilding.
    • The exemption covers only structural-code requirements for ceiling heights, room sizes, and maintenance of specific temperature levels.
    • A building permit is still issued and must note whether the dwelling or outbuilding complies with the exempted requirements.
    • If the structure does not comply with those requirements, the owner-builder must file a copy of the permit with the county clerk for permanent deed recording and provide a sufficient property description.
    • The rule is a statewide Oregon statutory exemption reprinted in the Oregon Residential Specialty Code.

    prior exemption lookback: 5 years (owner must not have taken advantage of the exemption during this period)

    “Owner-built dwellings and outbuildings shall be exempt from any requirements of the structural code for ceiling heights, room sizes”
    One more reviewed finding on this topic
    • Available (with conditions) — Owner-built single-family residences and adjacent auxiliary structures in Oregon where the structural components are constructed entirely by the owner intending to occupy the structures, or by the owner with unpaid assistance from friends and relatives.
      “Owner-built dwellings and outbuildings shall be exempt from any requirements of the structural code for ceiling heights, room sizes”
  • Building code adoptedAdopted (with conditions)

    The Oregon Residential Specialty Code applies statewide to construction, reconstruction, and repair of one- and two-family dwellings and townhouses, including applicable work in Morrow County.

    • Administrative provisions were effective and mandatory October 1, 2023.
    • Construction provisions were effective October 1, 2023 with a six-month phase-in period and mandatory April 1, 2024.
    • The code is based on the 2021 International Residential Code.
    • The cited code applies to one- and two-family dwellings and townhouses; other structures may be governed by other Oregon specialty codes.
    • Local land-use, permitting, and other local requirements may also apply.

    administrative provisions effective date: 2023-10-01 · construction provisions effective date: 2023-10-01 (six-month phase-in period) · construction provisions mandatory date: 2024-04-01 · model code: 2021 International Residential Code

    “The division works with building officials, technical committees, advisory boards, and the public to adopt, amend, and interpret the Oregon Residential Specialty Code (ORSC).”
    3 more reviewed findings on this topic
    • Adopted (with conditions) — Oregon State Building Code specialty codes administered statewide by the Oregon Building Codes Division.
      “The Building Codes Division adopts, amends, and interprets specialty codes that make up the Oregon State Building Code.”
    • Adopted (with conditions) — Commercial construction, reconstruction, alteration, and repair governed by the Oregon Structural Specialty Code statewide.
      “Construction provisions: [...] Mandatory April 1, 2026”
    • Adopted (with conditions) — Construction, reconstruction, and repair of one- and two-family dwellings and townhouses governed by the Oregon Residential Specialty Code statewide.
      “2023 Oregon Residential Specialty Code (ORSC) [...] Based on 2021 International Residential Code (IRC)”
  • InspectionsRequired

    Residential construction or work in Morrow County for which an Oregon residential building permit is required.

    • Construction or work requiring a permit is subject to inspection by the building official.
    • Work must remain accessible and exposed for inspection until approved.
    • Foundation inspection occurs before concrete placement after required excavation, forms, and reinforcing steel are in place.
    • Mechanical and gas rough inspections occur before covering or concealment, before fixtures or appliances are installed, and before framing inspection; ground-source heat-pump-loop backfilling is an exception when tested as specified.
    • Floodplain inspections and document submissions are determined by the floodplain administrator.
    • Frame and masonry inspection occurs after roof, masonry, framing, firestopping, draftstopping, and bracing are in place and after plumbing, mechanical, and electrical rough inspections are approved.
    • The building official may require additional inspections to determine code compliance.
    • The City of Boardman administers Morrow County building permits under the county’s contracting arrangement.
    “Construction or work for which a permit is required shall be subject to inspection by the building official”
  • Certificate of occupancyRequired

    Occupancy of a new residential dwelling or townhouse, and changes in character, use, or occupancy, in Morrow County under the Oregon Residential Specialty Code.

    • Prior to occupancy of a new residential dwelling or townhouse, the building official must issue a certificate of occupancy unless a temporary certificate is issued.
    • Certificates of occupancy are not required for work exempt from permits under Section R105.2.
    • Certificates of occupancy are not required for accessory buildings or structures.
    • Before issuance, the general contractor or owner issued the structural permit must provide contact and relevant license information for contractors who performed electrical, HVAC, and plumbing work.
    • A temporary certificate may be issued before all permitted work is complete if the portion occupied can be occupied safely; the building official sets its validity period.
    • The building official may revoke a certificate or temporary certificate for a health or safety violation, with a written statement of the basis.
    • The City of Boardman administers Morrow County building permits under the county’s contracting arrangement.
    “Prior to occupancy of a new residential dwelling or townhouse the building official must issue a certificate of occupancy”
  • Accessory dwellingsLimited

    Accessory dwelling units in areas within an urban growth boundary zoned for detached single-unit dwellings in a city with population greater than 2,500 or a county with population greater than 15,000.

    • The local government must allow at least one accessory dwelling unit for each detached single-unit dwelling.
    • Local regulations may address siting and design but may not include owner-occupancy requirements for the primary or accessory structure or requirements to construct additional off-street parking.
    • Local governments may regulate vacation occupancies to require owner-occupancy or off-street parking.

    city population threshold: > 2500 persons · county population threshold: > 15000 persons · minimum ADUs per detached single-unit dwelling: >= 1 unit

    “A city with a population greater than 2,500 or a county with a population greater than 15,000 shall allow”
  • Well permitLimited

    Construction, alteration, conversion, or abandonment of a water-supply well by a landowner in Oregon, including Morrow County.

    • A landowner permit, permit fee, and bond or irrevocable letter of credit must be obtained before work begins.
    • The exception is when the landowner is a licensed and bonded Water Supply Well Constructor.
    • The bond or irrevocable letter of credit is $10,000.
    • The permit fee is $550.
    • Only the owner of record, an immediate family member of the owner of record, or a full-time employee of the owner of record whose main duties are other than well construction may operate the drilling machine under the permit.
    • The permit expires six months after issuance.
    • A water well report must be submitted within 30 days of permit expiration or within 30 days of well completion, whichever occurs first.
    • The Department may deny the permit if the proposed work is a health threat, health hazard, source of contamination, or source of groundwater waste.
    • The page cites OAR 690-205-0175.

    bond or irrevocable letter of credit: 10000 USD · permit fee: 550 USD · permit duration: 6 months · water well report deadline: 30 days (within 30 days of permit expiration or well completion, whichever occurs first)

    “The Water Resources Commission requires a permit, permit fee, and bond or irrevocable letter of credit, for each water supply well constructed, altered, converted, or abandoned by a landowner, unless the landowner is a licensed and bonded Water Supply Well Constructor. The landowner permit and bond shall be obtained prior to beginning work on a well.”
    3 more reviewed findings on this topic
    • Required — Use of groundwater from a well in Oregon, including Morrow County, where a water-right permit is required.
      “Groundwater Application – required to use water from a well.”
    • Required — Construction, alteration, conversion, or abandonment of a water-supply well by a landowner in Morrow County, Oregon.
      “The Water Resources Commission requires a permit, permit fee, and bond or irrevocable letter of credit, for each water supply well [...] by a landowner”
    • Required — A property owner constructing, altering, converting, or abandoning a water-supply well in Oregon without being a licensed and bonded Water Supply Well Constructor.
      “The Water Resources Commission requires a permit [...] for each water supply well constructed, altered, converted, or abandoned by a landowner”
  • county zoning authorityGeneral

    Oregon counties adopting and revising comprehensive plans, zoning, subdivision, and other land-use ordinances applicable to county land, including unincorporated areas.

    • The statutory text states an exception for ORS 527.722.
    • Plans and related ordinances may be adopted and revised part by part or by geographic area.
    • Zoning, subdivision, and other ordinances or regulations must be designed to implement the adopted county comprehensive plan.
    • Before a county zoning ordinance has legal effect, the governing body or planning commission must conduct one or more public hearings and publish 10 days' advance public notice; additional notice requirements apply to certain zone changes under ORS 215.223.
    “Except as provided in ORS 527.722, the county governing body shall adopt and may from time to time revise a comprehensive plan and zoning, subdivision and other ordinances applicable to all of the land in the county. The plan and related ordinances may be adopted and revised part by part or by geographic area.”
  • county building authorityGeneral

    Oregon counties administering and enforcing building inspection programs, including issuance and enforcement of building permits for residential construction in areas outside incorporated cities.

    • A county building inspection program is subject to the state building code and the statutory building-inspection-program framework.
    • If a county does not notify the director, or notifies the director that it will not administer and enforce a building inspection program, the director must arrange administration and enforcement through a municipality, other person, state employees, or state agencies; permit and other fees arising therefrom are paid into the Consumer and Business Services Fund.
    • A building inspection program is administered for four-year periods under ORS 455.150; the governing body must provide required notices to the Director of the Department of Consumer and Business Services.
    • The program must specify cooperation with the State Fire Marshal or designee and how a uniform fire code will be considered in design and construction review.
    • The cited archive is the 2015 Oregon Revised Statutes edition; the current official ORS 455 page was identified but returned a 403 error during retrieval.
    “If a city does not notify the director, or notifies the director that it will not administer the building inspection program, the county or counties in which the city is located shall administer and enforce the county program within the city in the same manner as the program is administered and enforced outside the city, except as provided by subsection (6) of this section.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Lot coverage — Lot coverage limits in unincorporated Morrow County.
  • Building height — Building height limits in unincorporated Morrow County.
  • Tiny homes — Tiny-home occupancy in unincorporated Morrow County
  • Short-term rentals — Short-term rentals in Morrow County.

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.

Water rights & wells in Morrow County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from Oregon’s water agency.

Over-appropriated / declining

The aquifer here is over-appropriated and declining. A domestic well is usually still permit-exempt, but long-term supply is a genuine risk.

Household wellExempt — no permit or water right

Single or group domestic groundwater use up to 15,000 gpd is exempt from permitting, but the exemption can be limited inside designated Critical Groundwater Areas.

Limit: 15,000 gpd domestic (plus stockwater and ≤0.5 acre lawn/garden) under ORS 537.545

Oregon Water Resources Department — Exempt Water Uses ↗

Prior-appropriation state (first in time, first in right). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the Oregon state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Morrow County, Oregon

Is Morrow County a good place to live off-grid or homestead?

Morrow County scores 63/100 on the Bolthole Index, a solid county profile. Its strengths: deep seclusion — about 424 people within a 30-minute drive and manageable long-term carry cost. Watch-outs: weak self-sufficiency basics: only 14″ of rain a year and more administrative friction around building and land use.

Do you need a building permit in Morrow County, Oregon?

Morrow County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by UCo Health (Umatilla County Public Health, contracted agent) with Morrow County Planning LUCS. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

Can you live in an RV or tiny home on your land in Morrow County?

Living in an RV on your own land in Morrow County is limited to specific cases: Residential use of recreational vehicles in unincorporated Morrow County outside approved RV parks During construction of a primary dwelling, the RV use may not exceed six months, with one extension period not exceeding six additional months; the dwelling's zoning permit must authorize the temporary use. Temporary visitor housing in a residential or farm-use zone may not exceed 30 days in any 12-month period. Confirm with the county before relying on it.

How much does land cost in Morrow County, Oregon?

Land in Morrow County runs about $2,202 per acre, based on the latest county data.

What is the water situation in Morrow County?

Morrow County gets about 14" of rain a year, with severe drought in roughly 16.5% of years. On water rights, Morrow County lies in the Umatilla Basin Critical Groundwater Areas (Ordnance, Butter Creek, Stage Gulch) — Declining basalt/gravel aquifers designated critical; new groundwater appropriations are closed/heavily restricted and some exempt uses may be curtailed..

How remote is Morrow County?

A representative private-land location has about 424 people within a 30-minute drive and 245,135 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Morrow compares in Oregon

Compare side-by-side →See all 36 Oregon counties ranked →