Phoenix Metro
1.04×Cost multiplier
Dominant ground: Mohall, Gilman, Gunsight
2 counties in this region. Highest risk score: Maricopa County (4 of 10).
Counties: Maricopa County, Pinal County
THE DIRTBID REGIONAL MODEL · ARIZONA
Arizona Sitework Costs, Region by Region
Sitework in Arizona on the same Richmond Metro = 1.00 scale as the rest of DirtBid: 8 cost regions and 15 counties, each with a soil-risk rating from USDA and USGS data. Phoenix Metro runs highest at 1.04×; Sierra Vista Metro lowest at 0.85×.
Arizona 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.
- Cost regions
- 8
- Counties in the model
- 15
- Richmond Metro baseline
- 1.00×
Tucson Metro
0.95×Cost multiplier
Dominant ground: Mohall, Hayhook, Bucklebar
1 county in this region. Highest risk score: Pima County (4 of 10).
Counties: Pima County
Rest of Arizona
1.00×Cost multiplier
Dominant ground: Tubac, Sheppard, Clovis
7 counties in this region. 6 of 7 rate high for shallow rock. Highest risk score: Apache County (4 of 10).
Counties: Apache County, Gila County, Graham County, Greenlee County, La Paz County, Navajo County, Santa Cruz County
Prescott Valley Metro
0.97×Cost multiplier
Dominant ground: Barkerville, Springerville, Cabezon
1 county in this region. 1 of 1 rate high for shallow rock. Highest risk score: Yavapai County (4 of 10).
Counties: Yavapai County
Lake Havasu City Metro
0.91×Cost multiplier
Dominant ground: Mellenthin, Torriorthents, Huevi
1 county in this region. 1 of 1 rate high for shallow rock. Highest risk score: Mohave County (4 of 10).
Counties: Mohave County
Yuma Metro
0.89×Cost multiplier
Dominant ground: Gunsight, Ligurta, Hyder
1 county in this region. Highest risk score: Yuma County (4 of 10).
Counties: Yuma County
Flagstaff Metro
1.00×Cost multiplier
Dominant ground: Winona, Sheppard, Mespun
1 county in this region. 1 of 1 rate high for shallow rock. Highest risk score: Coconino County (5 of 10).
Counties: Coconino County
Sierra Vista Metro
0.85×Cost multiplier
Dominant ground: Tubac, Sasabe, Forrest
1 county in this region. Highest risk score: Cochise County (4 of 10).
Counties: Cochise County
FAQ
Arizona Cost Questions
Which soil problems drive sitework cost in Arizona?
From USDA soil survey data, the most common across the state: shallow rock (9 of 15 counties rate high). A parcel can differ from its county, so read the survey for your exact site.
Where do the Arizona multipliers come from?
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 Arizona, so use them for planning, not a final bid.
How reliable are the Arizona county ratings?
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
See what's under your Arizona parcel
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.