Helical Pile Cost Calculator
Estimate what helical piles or piers will cost for a deck, addition, new home, foundation repair or commercial job, using published 2026 installed prices.
Your project
Ranges are published installed prices per pile. Pick the closest match.
Decks need one pile per post. Repairs usually space piers 5 to 10 ft apart. Use the spacing calculator.
Estimated installed cost
| Per pile | |
| Piles × price | |
| Extra depth | |
| Mobilization |
Get three quotes. Prices vary with soil, depth to firm ground, access and local labor rates.
How this estimate works
The calculator multiplies the number of piles by the published installed price range for your project type, then adds extra depth and an optional mobilization fee. It uses the same sources as our helical pier cost guide.
| Project type | Installed cost per pile (USD) | Source |
|---|---|---|
| Deck, porch or shed | $300 to $700 | HomeGuide; Helical Anchors, Inc. |
| Addition, sunroom or light commercial | $500 to $1,200 | Helical Anchors, Inc. |
| New home foundation | $400 to $2,000 | US Helical Piers |
| Foundation repair (underpinning) | $1,750 to $4,000 | Forbes Home; HomeGuide |
| Commercial, 7 to 30 ft deep | $800 to $2,870 | Techno Metal Post Alaska price list |
| Dock, marine or boardwalk | $2,500 to $3,500 | Helical Anchors, Inc. |
Extra depth
Quotes cover a standard depth. Each extra foot of shaft adds about $20 to $35 for residential piles (HomeGuide, Forbes Home) and up to $90 per foot for heavy commercial extensions (Techno Metal Post Alaska). The calculator uses $20 to $35 per foot, or $20 to $90 for commercial.
Mobilization
Bringing a machine to site is a fixed cost. One Toronto installer quotes about CAD $500 to $800 (GAMCON); others charge trip fees or set a minimum pile count. The toggle adds $500 to $800.
Canada
Screw piles for decks run about CAD $200 to $500 per pile installed and $400 to $700 for additions in Ontario (HomeStars, GAMCON). Prices usually exclude HST and permits. See screw piles.
Frequently asked questions
How much does a helical pile cost?
Published installed prices run about $300 to $700 per pile for decks, $500 to $1,200 for additions and $1,750 to $4,000 per pier for foundation repair.
Why is foundation repair so much more per pier?
Repair piers need excavation at the footing, a heavy retrofit bracket and often a controlled lift of the house, while new-construction piles go into open ground with a simple cap.
What makes a quote go up?
Depth to firm soil (extra extensions), tight access, remote sites, small jobs that carry a full mobilization fee, and engineering or permit costs.
Is this calculator a quote?
No. It gives a planning range from published prices. Soil, loads and access change real prices, so get written quotes from local installers.
Sources
- HomeGuide: Helical piers cost
- Helical Anchors, Inc.: How much do helical piles cost
- Forbes Home: Helical piers cost
- US Helical Piers: FAQs
- Techno Metal Post Alaska: Fairbanks pricing
- GAMCON: Helical piles installation cost Toronto
- HomeStars: Deck construction costs
Related guides and tools
Last reviewed October 2026 by the Helical Pile USA editorial team. Estimates are for planning only; a licensed engineer or installer sets the final design. Found an error? Tell us.
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© 2026 Helical Pile USA. An independent directory of helical pile installers, manufacturers, and distributors in the United States and Canada. Listings are provided for information only and are not endorsements; always verify licensing, insurance, and engineering requirements with the company and your local building department.