Who issues septic permits outside the cities?

Jefferson County runs the on-site septic program under authority from the Oregon Department of Environmental Quality. A site evaluation comes first, then the system permit. This is a summary, not legal advice. Confirm with Jefferson County Community Development before you buy or build.

Can I add a second home on rural land?

Jefferson County describes the state ADU law (SB 391): at least 2 acres with one existing home, up to 900 square feet, no overnight rentals. The page says the planning commission is still taking input on whether and where to allow them. This is a summary, not legal advice. Confirm with Jefferson County Community Development before you buy or build.

Where do I look up the zoning on a parcel?

Jefferson County publishes a public GIS mapping application for parcels in the county. This is a summary, not legal advice. Confirm with Jefferson County Community Development before you buy or build.

Where can I find the well report for a property?

The Oregon Water Resources Department keeps well reports for every county in the state. Search by township, range and section or by county well log number. This is a summary, not legal advice. Confirm with Jefferson County Community Development before you buy or build.

Is Jefferson County part of Central Oregon?

Yes. Central Oregon is Deschutes, Crook and Jefferson counties plus north Klamath County. The Jefferson County seat is Madras, and permits run through Jefferson County Community Development. The other hubs cover Deschutes County, Crook County, North Klamath County.

Central Oregon

Jefferson County real estate

Every town in Jefferson County, from Madras and Culver to Crooked River Ranch and Camp Sherman. Each row opens the town and the homes for sale in it.

Counted by boundary

Places in Jefferson County filed under another town

Crooked River Ranch: Listings here are filed under Terrebonne.Homes for sale filed under TerrebonneWe do not publish a Crooked River Ranch count until a boundary covers the whole place.

Listings carry the town on their mailing address, so these places are counted inside their own boundary, not by name.

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Jefferson County

Buying in Jefferson County

Who issues septic permits outside the cities?
Jefferson County runs the on-site septic program under authority from the Oregon Department of Environmental Quality. A site evaluation comes first, then the system permit.
This is a summary, not legal advice. Confirm with Jefferson County Community Development before you buy or build.
Read the rule
Source Jefferson County how we calculate this
Jefferson County, On-Site Septic Program, checked Oct 24, 2026
Can I add a second home on rural land?
Jefferson County describes the state ADU law (SB 391): at least 2 acres with one existing home, up to 900 square feet, no overnight rentals. The page says the planning commission is still taking input on whether and where to allow them.
This is a summary, not legal advice. Confirm with Jefferson County Community Development before you buy or build.
Read the rule
Source Jefferson County how we calculate this
Jefferson County, Accessory Dwelling Units, checked Oct 24, 2026
Where do I look up the zoning on a parcel?
Jefferson County publishes a public GIS mapping application for parcels in the county.
This is a summary, not legal advice. Confirm with Jefferson County Community Development before you buy or build.
Read the rule
Source Jefferson County GIS how we calculate this
Jefferson County GIS, Public Mapping Application, checked Oct 24, 2026
Where can I find the well report for a property?
The Oregon Water Resources Department keeps well reports for every county in the state. Search by township, range and section or by county well log number.
This is a summary, not legal advice. Confirm with Jefferson County Community Development before you buy or build.
Read the rule
Source Oregon Water Resources Department how we calculate this
Oregon Water Resources Department, Well Report Query, checked Oct 24, 2026
Is Jefferson County part of Central Oregon?
Yes. Central Oregon is Deschutes, Crook and Jefferson counties plus north Klamath County. The Jefferson County seat is Madras, and permits run through Jefferson County Community Development. The other hubs cover Deschutes County, Crook County, North Klamath County.
Jefferson County Community Development

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