Exclusive Farm Use zoning in Oregon is a county-administered land use designation that restricts property to farming and a short list of statutorily approved activities, caps how land can be divided, and limits when a home can be built, in exchange for property taxes assessed on agricultural value rather than market value. It is one of the strictest farmland protection systems in the country. If you own or are thinking about buying land in an EFU zone, the rules shape nearly every decision you can make about the property, and breaking them can trigger injunctions, daily fines, and rollback taxes reaching back a decade.
What You Can Do on EFU Land
The baseline rule is simple: EFU land must be used exclusively for farm use, with exceptions only where statute specifically authorizes them. ORS 215.203 defines farm use broadly to cover raising, harvesting, and selling crops; feeding, breeding, managing, and selling livestock, poultry, fur-bearing animals, and honeybees; dairying; and preparing, storing, and marketing farm products raised on the land.1OregonLaws. Oregon Revised Statutes 215.203 – Zoning Ordinances Establishing Exclusive Farm Use Zones
Several farm-related structures and activities are allowed outright. Barns, equipment sheds, and irrigation infrastructure are permitted when they support an active farm. Churches and cemeteries in conjunction with churches are allowed, as is forest product propagation and harvesting.2OregonLaws. Oregon Revised Statutes 215.283 – Uses Permitted in Exclusive Farm Use Zones in Nonmarginal Lands Counties Farm stands selling produce grown on-site are permitted but must comply with county size and sales restrictions and cannot be expanded into general retail.
Wineries
Wineries are permitted under ORS 215.452, but with vineyard acreage tied to production. A winery producing under 50,000 gallons annually must own or hold a long-term grape contract covering at least 15 acres of vineyard on-site or on contiguous land. A winery producing 50,000 gallons or more needs at least 40 acres, with several allowed combinations of on-site, contiguous, and nearby vineyard acreage.3Oregon State Legislature. Oregon Revised Statutes 215.452 – Winery Conditions Permissible Uses
Cannabis
Growing marijuana qualifies as a farm use, so it is generally allowed in EFU zones. The legislature, however, carved out meaningful restrictions. No new dwellings can be established in conjunction with a marijuana crop; the Department of Land Conservation and Development reads this to cover primary farm dwellings, accessory dwellings, and relative farm help dwellings alike. Farm stands cannot sell marijuana or marijuana products, and commercial activities beyond wholesale crop sales tied to a marijuana operation are prohibited in EFU zones.4Oregon.gov. Guide to Recreational Marijuana in Exclusive Farm Use Zones You cannot use a cannabis grow as the basis for building a house or opening a storefront on EFU land.
When You Can Build a House
A farm dwelling is permitted on EFU land, but approval depends on parcel size and farming income. The thresholds are strict, and they are the point where most buyers discover that “farmland” does not mean “land you can automatically build on.”
On a parcel of 20 or more acres, a primary dwelling may be established if the farm produces at least $2,500 in annual gross income from crops, livestock, or forest products, and the operation is not smaller than the average farm or woodlot in the county at that income level.5LegiScan. Oregon 2026 HB 4153 Enrolled
On a smaller parcel, the income bar jumps sharply. The land must have produced at least $20,000 in annual gross farm income in two of the three calendar years before the application, or be planted in perennials capable of producing at least $20,000 annually at harvest. Woodlots must be capable of averaging $20,000 in gross annual income across the growth cycle.5LegiScan. Oregon 2026 HB 4153 Enrolled
A relative of the farm operator may also live in a separate dwelling on the same lot or parcel if the operator needs that relative’s help running the farm. The relationship has to fall within a defined degree of family connection: child, parent, grandchild, grandparent, sibling, niece, nephew, or first cousin of either spouse.2OregonLaws. Oregon Revised Statutes 215.283 – Uses Permitted in Exclusive Farm Use Zones in Nonmarginal Lands Counties
Non-Farm Uses That Need Conditional Approval
Some non-farm activities can be allowed, but only through a conditional use permit from the county. Under ORS 215.296, the county must find that the proposed use will not force a significant change in accepted farming practices on surrounding land and will not significantly increase the cost of those practices.6Oregon State Legislature. Oregon Revised Statutes 215.296 – Standards for Approval of Certain Uses in Exclusive Farm Use Zones That two-part test is where most applications succeed or fail. A commercial operation that generates traffic disrupting harvest schedules, or a structure that makes aerial spraying impractical on a neighbor’s field, should be denied.
Uses that may qualify for conditional approval include schools, churches, and similar places of public or semi-public assembly; utility facilities such as water treatment plants and power substations; and private parks, playgrounds, hunting and fishing preserves, and campgrounds.2OregonLaws. Oregon Revised Statutes 215.283 – Uses Permitted in Exclusive Farm Use Zones in Nonmarginal Lands Counties Commercial power generation and transmission towers over 200 feet are treated separately under the statute.
Home occupations are allowed under ORS 215.448, but the business must stay clearly secondary to the agricultural character of the property. It cannot unreasonably interfere with other permitted uses in the zone, and it cannot justify constructing a building that would not otherwise be allowed on EFU land.7Oregon State Legislature. Oregon Revised Statutes 215.448 – Home Occupations Parking Where Allowed Conditions A consulting practice, a craft operation, or a small bed-and-breakfast may fit; a business generating commercial-level traffic or needing a paved lot and a new commercial building will not.
Commercial solar installations are capped by soil quality: up to 12 acres on high-value farmland, up to 20 acres on arable soils, and up to 320 acres on non-arable land.8Oregon State Legislature. EFSC and County Comparison for Solar Facilities Projects exceeding these limits need a goal exception, which is a difficult standard.
Dividing or Rezoning EFU Land
Minimum parcel sizes under ORS 215.780 are 80 acres for non-rangeland and 160 acres for rangeland. These figures reflect the acreage needed to sustain commercial farming on different soil types.9Oregon State Legislature. Oregon Revised Statutes 215.780 – Minimum Lot or Parcel Sizes Dividing EFU land requires county approval under ORS 215.263, and only partitions creating up to three parcels are possible; subdivisions into more than three parcels are not authorized.10OregonLaws. Oregon Revised Statutes 215.263 – Land Divisions in Exclusive Farm Use Zones A narrow exception allows carving off a smaller parcel for a non-farm dwelling, but the remaining farm parcel still has to meet the applicable minimum.
Taking land out of EFU zoning entirely is deliberately hard. Statewide Planning Goal 3 requires that agricultural lands be preserved and maintained for farm use.11Oregon.gov. Oregon Statewide Planning Goals and Guidelines – Goal 3 Agricultural Lands Rezoning requires a comprehensive plan amendment and, in practice, a goal exception under ORS 197.732. The applicant must show the land is already developed to the point farming is impossible, that adjacent development has irrevocably committed the land to non-farm use, or that a four-part reasons test is met.12Oregon State Legislature. Oregon Revised Statutes 197.732 – Goal Exceptions Criteria Rules Review Decisions go through county public hearings and can be appealed to the Land Use Board of Appeals. Approvals are uncommon, and the process generally requires professional planning and legal help.
The Property Tax Tradeoff
Land within an EFU zone used exclusively for farming qualifies for special assessment under ORS 308A.062, meaning it is taxed on agricultural income value rather than real market value.13Oregon State Legislature. Oregon Revised Statute Chapter 308A – Special Assessment of Land The gap between market and farm-use value can be substantial, especially near growing cities. The assessor uses an income approach: net income per acre divided by a capitalization rate derived from the five-year average Farm Credit Services mortgage rate plus the local tax rate. The assessed value for each land class is the lesser of the calculated farm-use value or the prior year’s assessed value plus three percent.14Oregon Department of Revenue. Assessment of Farmland in an Exclusive Farm Use Zone
If the land loses its qualification, rollback taxes apply. Under ORS 308A.703, the county adds back the difference between what was paid and what would have been owed at full value, going back up to 10 years for EFU land outside an urban growth boundary or up to 5 years inside one. The lookback is the lesser of the applicable maximum or the number of consecutive years the land was under special assessment.15OregonLaws. Oregon Revised Statutes 308A.703 – Additional Taxes Upon Disqualification For properties near urban growth boundaries, a decade of tax differences can produce a serious bill, and that is a significant part of why conversion out of farm use is rare.
What Happens If You Break the Rules
County planning departments enforce EFU zoning through permitting, complaints, and site inspections. Any change in land use requires prior approval, and unauthorized construction or non-farm activity is a zoning violation.
Under ORS 215.185, the county can seek injunctions, abatement orders, and other court proceedings when a building or use violates the comprehensive plan ordinance. Private landowners whose property interests are affected can also bring these actions on their own.16OregonLaws. Oregon Revised Statutes 215.185 – Remedies for Unlawful Structures or Land Use
For conditional uses that drift out of compliance after approval, ORS 215.296 sets up a separate enforcement track. If a county confirms a complaint that a use is forcing changes to accepted farming practices or raising surrounding farming costs, the owner must correct the problem within a set period. If they do not, the county must impose a fine. After a third confirmed violation, the county can suspend or revoke the use authorization.6Oregon State Legislature. Oregon Revised Statutes 215.296 – Standards for Approval of Certain Uses in Exclusive Farm Use Zones Daily fines for ongoing violations add up quickly, and counties have authority to require removal of unauthorized structures.