Boise

Helical piles in Boise, Idaho

Boise's frost depth is 24 inches at minimum under the city's adopted codes. Helical piles let builders reach below frost and into firm soil without waiting on concrete in cold weather.

Idaho is also seismically active. The Idaho Office of Emergency Management notes the 1983 Borah Peak earthquake (magnitude 6.9) and the 2020 Stanley earthquake (magnitude 6.5). Helical piles can be designed for tension and lateral loads, which gives engineers options on hillside and foothill sites.

Helical pile companies serving Boise

One company in our directory is based in Boise.

• Foundation and Crawl Space Repair of Idaho: offers helical piles, push piers, helical anchors and tiebacks in Boise, Pocatello and Idaho Falls.

Costs and what to ask

The Idaho guide cites HomeGuide, which puts a typical installed helical pier at about $2,000 to $4,000. Idaho pricing varies with depth, access, and travel to mountain or lake sites. For more, see our helical pier cost guide.

When you collect quotes in Boise, put them side by side on pier count, expected depth and warranty terms. Because 24-inch frost depth and seismic loads can change the design, ask who is responsible if conditions differ once piers are turning. Save the inspection and torque paperwork for future buyers.

• Who is the engineer of record, and did the design account for 24-inch frost depth and seismic loads?
• Will you record installation torque for every pile and give me the logs?
• What shaft size and galvanizing or corrosion protection do you use for Boise conditions?
• Who pulls the Boise permit, and what warranty covers the work?

For wider coverage, see Idaho helical pile installers.