Off-grid living in Oregon: a property guide
Oregon says it plainly: consider land use first. A building code tells you how to build; planning determines whether the dwelling belongs on that parcel. Septic construction then requires affirmative land-use compatibility.
The Oregon order of operations
- 1 Land-use eligibilityUse, legal parcel, rural zone, dwelling standard
- 2 Water sourceExemption or right, well construction, supply proof
- 3 Septic site evaluationInitial and replacement area, soil and groundwater
- 4 Affirmative LUCSLand-use compatibility before septic construction permit
- 5 Building permitsPlans, trades, inspections and occupancy
Gate one
“Rural” is a planning designation, not an absence of planning.
Oregon’s statewide planning program protects farm and forest land, limits rural development, and channels low-density residential use to appropriate areas. DLCD notes that rural residential zoning generally means one dwelling per ten acres at the state-rule level—but the parcel’s actual county zone and approval criteria control the proposal.
County zoning designation; legal-lot determination; whether a dwelling is permitted outright, conditionally, or not at all; minimum parcel and siting standards; farm/forest dwelling tests; overlays; road and fire access; and any required land-use decision.
New residential construction requires local permits.
Oregon’s Building Codes Division says new construction and specified structural, plumbing, mechanical and electrical work require permits. It also warns that planning and zoning must be considered first.
Responsible building department, adopted specialty codes, complete permit set, owner-builder responsibilities, inspection sequence, permit-expiration rules and the certificate or approval needed before occupancy.
The domestic-well exemption is a water-use rule, not a water-supply warranty.
Most Oregon water uses require authorization. Single or group domestic groundwater use not exceeding 15,000 gallons per day is exempt from the water-right permit process. Exempt use remains subject to state water law, beneficial-use and waste limits, senior rights, and restrictions in groundwater areas.
proof of well yield, drinking-water quality, legal well construction, pump capacity, drought reliability or affordable depth
Well log and location, exempt-use applicability, watermaster response, area restrictions, condition and capacity inspection, pump test when appropriate, current lab panel, treatment and replacement budget.
A septic site evaluation is not the construction permit.
An undeveloped parcel ordinarily needs a site evaluation. If approved, that report states the system requirements, but the owner still needs a separate construction-installation permit. Oregon also expects usable space for both the initial and replacement systems.
DEQ administers residential permitting directly in Curry, Jackson, and Josephine counties; contracted local jurisdictions handle the other counties.
Follow Oregon’s onsite processOccupied RVs require authorization and lawful sewage disposal.
Oregon DEQ directs owners to the county or city planning, building, or community-development department for authorization. Its guidance explains that temporary construction or disaster occupancy and residential use under specific statutory conditions are not interchangeable.
Name the RV, site, number of people, dates, construction status, water, power and wastewater connection. Get planning authorization and onsite-wastewater approval separately.
A manufactured dwelling still needs a lawful site.
Oregon’s manufactured dwellings must follow the Oregon Manufactured Dwelling Installation Specialty Code. State design and installation regulation does not displace county or city land use, site work, utility, onsite wastewater or final inspection requirements.
Verify HUD/state identification, age and alteration records, installer, foundation and anchoring design, local zoning, destination loads, permits, utility connections, inspection and title/real-property treatment.
The offer contingency
Make the parcel produce this file.
Land-use decision exact zone, dwelling path, overlays, conditions and expiration.
Access proof deeded route, road agreement, driveway and emergency standards.
Water proof authority, well record, lawful use, capacity, quality and contingency.
Septic proof evaluation, LUCS, initial/replacement layout, permit and inspection path.
Dwelling proof classification, approved plans, trade permits and occupancy endpoint.
Private proof title exceptions, covenants, easements, association and utility terms.
Research record
Official sources checked
Checked September 26, 2026. The listed material supports the statewide baseline; county decisions, parcel documents, site testing and agency approvals remain separate evidence.
- 01Rural Planning and Development
Department of Land Conservation and Development · Statewide planning, farm/forest land and rural residential context
- 02About Oregon Residential Building Permits
Building Codes Division · Land use first; permits for new residential construction
- 03Water Rights FAQs
Oregon Water Resources Department · Public ownership, permits and exempt domestic groundwater use
- 04Water Well Handbook
Oregon Health Authority / Water Resources Department · Well construction, exempt-use limits and groundwater restrictions
- 05Housing and Onsite Wastewater Management
Department of Environmental Quality · Site evaluation, LUCS, construction permits and replacement area
- 06Guidance for Siting RVs and Wastewater Disposal
Department of Environmental Quality · Local authorization and lawful wastewater for occupied RVs
- 07Manufactured Dwelling Code Program
Building Codes Division · Oregon installation specialty code