Marion County, Oregon
Scotts Mills is a city in Marion County, Oregon. Scotts Mills adopts its own zoning, so inside its limits Scotts Mills’s rules apply, not the county’s. Septic permits inside Scotts Mills come from Marion County (Marion County Building Inspection - Onsite Sewage Disposal Program · 503-588-5147). 11 rules below are quoted from official sources and independently re-checked, most recently on November 12, 2026. Rules for unincorporated land are on the Marion County page.
Land within the Scotts Mills urban growth boundary / city zoning map
“all areas within the urban growth boundary of the city of scotts mills are divided into land use zones.”
Zoning districts inside Scotts Mills city
“2.1 single-family residential (rs) zone 2.2 multi-family residential (rm) zone 2.3 industrial commercial (ic) zone 2.4 commercial (cg) zone”
Single-Family Residential (RS) zone inside Scotts Mills city
minimum lot area, single-family: >= 8000 sq ft · minimum lot area, duplex: >= 12000 sq ft
“a. minimum lot area 1. single-family dwellings: 8,000 square feet 2. duplex: 12,000 square feet”
Single-Family Residential (RS) zone inside Scotts Mills city; applies to primary and accessory structures
front setback, residential: >= 20 feet · rear setback, street-access lots: >= 15 feet
“the minimum rear yard setback shall be 15 feet for street-access lots, and 5 feet for alley-access lots (all structures).”
Single-Family Residential (RS) zone inside Scotts Mills city
max lot coverage, single-family detached: <= 35 percent · max lot coverage, duplex: <= 40 percent
“1. single-family detached houses: 35% 2. duplex: 40% 3. public/institutional uses: 80%”
Single-Family Residential (RS) zone inside Scotts Mills city
max building height: <= 35 feet or 2 stories, whichever greater
“buildings within the single family residential (rs) zone shall be no more than 35 feet or 2 stories in height, whichever is greater.”
Recreational vehicles on single-family, multi-family or general commercial zoned property containing single-family dwellings inside Scotts Mills city
residential RV use: <= 14 of 30 consecutive days days
“developed property may contain a recreational vehicle for residential recreational vehicle use a total of 14 out of 30 consecutive days during the calendar year.”
Manufactured homes on individual lots in the RS (and RM) zone inside Scotts Mills city
minimum floor area, manufactured home: >= 1000 sq ft (units existing before the code)
“manufactured homes are permitted on individual lots, subject to all of the following design standards, consistent with ors 197.307(5).”
Building and septic permit fees for land inside Scotts Mills city
“fees for permits may vary, for accurate pricing please call our office at 503-873-5435.”
Building and septic permits for land inside Scotts Mills city
“within city limits, all building and septic permits must be submitted to the city hall for review and they will then be sent to marion county for review and approval.”
Scotts Mills does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Septic permits for land inside Scotts Mills city; Marion County reviews and approves after city hall intake
“within city limits, all building and septic permits must be submitted to the city hall for review and they will then be sent to marion county for review and approval.”
We looked and could not find an official answer yet. Silence is not permission; ask Scotts Mills or Marion County directly.
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 Scotts Mills publishes no rule on the point, not that none exists. Marion County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Scotts Mills means bringing your own water and power. The kit we’d start with:
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