Zoning, building permits and septic rules in Aumsville, Oregon
Aumsville is a city in Marion County, Oregon. Aumsville adopts its own zoning, so inside its limits Aumsville’s rules apply, not the county’s. 5 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.
Answers from the rulebook for Aumsville
Aumsville’s own rules
Building permitRequired
New single-family or multi-family dwellings inside Aumsville city limits
Application is submitted to the city; the city does zoning and plan review, then Marion County processes the structural permit.
Two sets of plans and engineering specs and three site plans are required.
City development fees (sewer and water SDCs, park SDCs, transportation SDCs) and the school construction excise tax are paid at pickup.
“fill out a marion county structural building permit and submit it to the city of aumsville.”
One more reviewed finding on this topic
Required — Residential accessory buildings and sheds inside Aumsville city limits
“accessory buildings/sheds larger than 200 square feet, or taller than 10 feet must also obtain a marion county building permit.”
Local zoningPresent
Land inside Aumsville city limits
Zoning restrictions are in the Aumsville development ordinance; the code text itself was not readable in this session.
“see the current aumsville development ordinance for your specific zoning restrictions; i.e., property line setbacks, maximum lot coverage.”
Permit feesVariable (with conditions)
New dwelling permits inside Aumsville city limits
Estimated fee paid at submittal; actual county charges and city development fees are set later; contact city hall for current development fees.
School construction excise tax example on the page: 1540 sf home at $1.30 per square foot.
“you will pay an estimated permit fee at the time of submittal.”
Permit processPublished (with conditions)
New dwelling permits inside Aumsville city limits
City collects the application and does zoning and plan review; Marion County processes the structural permit and returns it to the city with actual charges.
“the city administrator will conduct a zoning and plan review; once approved, the city will send the permit application on to marion county for processing.”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission; ask Aumsville or Marion County directly.
Owner-builder exemption — Inside Aumsville city limits
Building code adopted — Inside Aumsville city limits
Inspections — Inside Aumsville city limits
Certificate of occupancy — Inside Aumsville city limits
Zoning districts — Inside Aumsville city limits
21 more unanswered
Minimum dwelling size
Minimum lot size
Setbacks
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
Accessory dwellings
Who permits septic
Septic permit
Septic inspection
Off-grid sanitation
Well permit
Mandatory utility hookup
Agricultural exemption
Subdividing land
Driveway access
Building in a floodplain
Short-term rentals
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 Aumsville 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 Aumsville means bringing your own water and power. The kit we’d start with:
