THE DIRTBID REGIONAL MODEL · OKLAHOMA
Sitework in Oklahoma on the same Richmond Metro = 1.00 scale as the rest of DirtBid: 6 cost regions and 77 counties, each with a soil-risk rating from USDA and USGS data. Oklahoma City Metro runs highest at 0.86×; Lawton Metro lowest at 0.80×.
Oklahoma 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: Stephenville, Darnell, Harrah
7 counties in this region. 3 of 7 rate high for shallow rock. Highest risk score: Canadian County (5 of 10).
Counties: Canadian County, Cleveland County, Grady County, Lincoln County, Logan County, McClain County, Oklahoma County
Dominant ground: Dennis, Stephenville, Carnasaw
59 counties in this region. 25 of 59 rate high for shallow rock. 6 of 59 rate high for water table. USGS maps karst-prone rock across much of 6 of the 59. Highest risk score: Pushmataha County (6 of 10).
Counties: Adair County, Alfalfa County, Atoka County, Beaver County, Beckham County, Blaine County, Bryan County, Caddo County, Carter County, Cherokee County, Choctaw County, Cimarron County, Coal County, Craig County, Custer County, Delaware County, Dewey County, Ellis County, Garvin County, Grant County, Greer County, Harmon County, Harper County, Haskell County, Hughes County, Jackson County, Jefferson County, Johnston County, Kay County, Kingfisher County, Kiowa County, Latimer County, Le Flore County, Love County, McCurtain County, McIntosh County, Major County, Marshall County, Mayes County, Murray County, Muskogee County, Noble County, Nowata County, Okfuskee County, Ottawa County, Payne County, Pittsburg County, Pontotoc County, Pottawatomie County, Pushmataha County, Roger Mills County, Seminole County, Stephens County, Texas County, Tillman County, Washington County, Washita County, Woods County, Woodward County
Dominant ground: Dennis, Bigheart, Niotaze
7 counties in this region. 5 of 7 rate high for shallow rock. 5 of 7 rate high for dewatering. USGS maps karst-prone rock across much of 1 of the 7. Highest risk score: Osage County (6 of 10).
Counties: Creek County, Okmulgee County, Osage County, Pawnee County, Rogers County, Tulsa County, Wagoner County
Dominant ground: Foard, Zaneis, Ashport
2 counties in this region. 1 of 2 rate high for shallow rock. Highest risk score: Comanche County (4 of 10). This multiplier sits outside the range the model was tested on, so treat it as rougher.
Counties: Comanche County, Cotton County
Dominant ground: Kirkland, Grant, Masham
1 county in this region. Highest risk score: Garfield County (4 of 10). This multiplier sits outside the range the model was tested on, so treat it as rougher.
Counties: Garfield County
Dominant ground: Linker, Hector, Enders
1 county in this region. 1 of 1 rate high for shallow rock. Highest risk score: Sequoyah County (5 of 10). This multiplier sits outside the range the model was tested on, so treat it as rougher.
Counties: Sequoyah County
FAQ
From USDA soil survey data, the most common across the state: shallow rock (35 of 77 counties rate high), dewatering (11 of 77 counties rate high), water table (10 of 77 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 Oklahoma, 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.