Portland Metro
Dominant ground: Jory, Goble, Olyic
5 counties in this region. Highest risk score: Clackamas County (4 of 10).
Counties: Clackamas County, Columbia County, Multnomah County, Washington County, Yamhill County
THE DIRTBID REGIONAL MODEL · OREGON
Sitework in Oregon on the same Richmond Metro = 1.00 scale as the rest of DirtBid: 9 cost regions and 36 counties, each with a soil-risk rating from USDA and USGS data. Portland Metro runs highest at 1.06×; Grants Pass Metro lowest at 0.96×.
Oregon multipliers and county ratings are planning-level: built from federal price and soil data, and not yet checked against local bids or a local estimator.
Dominant ground: Jory, Goble, Olyic
5 counties in this region. Highest risk score: Clackamas County (4 of 10).
Counties: Clackamas County, Columbia County, Multnomah County, Washington County, Yamhill County
Dominant ground: Limberjim, Anatone, Syrupcreek
21 counties in this region. 16 of 21 rate high for shallow rock. Deep frost protection is likely in 2 of 21. Highest risk score: Grant County (6 of 10).
Counties: Baker County, Clatsop County, Coos County, Curry County, Douglas County, Gilliam County, Grant County, Harney County, Hood River County, Klamath County, Lake County, Lincoln County, Malheur County, Morrow County, Sherman County, Tillamook County, Umatilla County, Union County, Wallowa County, Wasco County, Wheeler County
Dominant ground: Woodburn, Nekia, McCully
2 counties in this region. Highest risk score: Marion County (4 of 10).
Counties: Marion County, Polk County
Dominant ground: Bohannon, Peavine, Klickitat
1 county in this region. 1 of 1 rate high for shallow rock. Highest risk score: Lane County (4 of 10).
Counties: Lane County
Dominant ground: Simas, Hankins, Ginser
3 counties in this region. 2 of 3 rate high for shallow rock. Deep frost protection is likely in 1 of 3. Highest risk score: Deschutes County (5 of 10).
Counties: Crook County, Deschutes County, Jefferson County
Dominant ground: Vannoy, McNull, Medco
1 county in this region. 1 of 1 rate high for shallow rock. Highest risk score: Jackson County (4 of 10).
Counties: Jackson County
Dominant ground: Honeygrove, Dayton, Kinney
1 county in this region. 1 of 1 rate high for water table. Highest risk score: Linn County (5 of 10).
Counties: Linn County
Dominant ground: Jory, Honeygrove, Bohannon
1 county in this region. 1 of 1 rate high for shallow rock. Highest risk score: Benton County (5 of 10).
Counties: Benton County
Dominant ground: Beekman, Vermisa, Josephine
1 county in this region. 1 of 1 rate high for shallow rock. Highest risk score: Josephine County (4 of 10).
Counties: Josephine County
FAQ
From USDA soil survey data, the most common across the state: shallow rock (22 of 36 counties rate high), water table (1 of 36 counties rate high). A parcel can differ from its county, so read the survey for your exact site.
From the Commerce Department's Regional Price Parities, on the same Richmond Metro = 1.00 scale as Virginia. Across 29 reviewed regions that method missed by about 0.03 on average. They have not been checked against executed bids in Oregon, so use them for planning, not a final bid.
They are screening ratings from federal soil and geology data, not a local estimator's review and not a geotechnical report. Tested against 511 reviewed counties, they land within one level most of the time, and exact matches are less common. Get borings before you price a real site.
Soil Report
A $350 DirtBid AI Soil Report reads the official USDA survey for your exact parcel, flags the hazards above, and prices the risk — before you buy land or sign a contract.