Foundation repair contractors fix settling, cracking, bowing, and water-damaged foundations on homes and light commercial buildings. Invoices usually cover piering or underpinning, wall stabilization, crack injection, slab leveling, and drainage work, often billed in stages because jobs run days or weeks and involve large material costs.
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Most foundation repair is priced per unit of work rather than by the hour: per pier, per linear foot of wall or crack, per square foot of slab, or as a flat job price built from those units. Contractors typically build the price from engineering or inspection fees, number and depth of piers, materials, equipment, labor, permits, and a margin for unknowns like hitting rock, utilities, or groundwater. Larger jobs are billed in stages, such as a deposit, a progress payment when piers are installed, and a final payment after lift, backfill, and cleanup. Change orders are common when soil conditions or hidden damage differ from the original assessment, and should be invoiced as separate line items. Warranties are part of the sale, so many contractors list them on the invoice.
| Service | Priced | Typical range |
|---|---|---|
| Steel push piers or helical piers (installed) | per pier | $1,200-3,000 |
| Concrete pressed pilings or drilled piers | per pier | $1,000-2,000 |
| Slabjacking or polyurethane foam slab lifting | per sq ft | $5-25 |
| Wall crack repair with epoxy or polyurethane injection | per linear ft | $300-800 per crack (typically $15-40 per linear ft) |
| Carbon fiber strap or wall anchor stabilization for bowing walls | per strap or anchor | $400-1,000 |
| Interior or exterior perimeter drain installation | per linear ft | $40-100 |
| Crawl space support posts or beam shimming | per post | $150-500 |
| Foundation inspection or engineer report coordination | flat fee | $250-800 |
Typical US ranges. Rates vary by region, experience, and job size.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Foundation inspection and written repair plan (credited if work proceeds, shown as billed) | 1 flat fee | $400.00 | $400.00 |
| Install steel push piers to refusal, rear and east walls (avg depth 14 ft) | 8 per pier | $1,650.00 | $13,200.00 |
| Hydraulic lift and level of east corner, with shimming and pier cap lock-off | 1 flat fee | $1,200.00 | $1,200.00 |
| Epoxy injection of interior wall crack, north basement wall | 12 linear ft | $30.00 | $360.00 |
| Excavation, backfill, compaction, and haul-away of spoils | 1 flat fee | $950.00 | $950.00 |
| Permit fee (pass-through) | 1 each | $275.00 | $275.00 |
| Total | $16,385.00 | ||
Notes: Deposit of $7,000 received at contract signing, credited above. Progress payment of $6,000 due on pier installation completion; balance due within 10 days of final walkthrough. Piers carry a transferable lifetime structural warranty per the signed contract. Late balances accrue 1.5% per month.
Ties the invoice to the specific structure and the permit the city or county inspected, which matters for resale and insurance claims.
Clients and engineers verify the work against the plan, and this prevents disputes about how many piers were actually installed.
Ties extra charges for rock, utilities, or added piers to written approval.
Steel, concrete, foam, drain pipe, and equipment rental are large costs, and itemizing them supports your pricing.
Shows the remaining balance clearly on multi-stage jobs.
Foundation warranties are a major selling point and are often needed by future buyers and their lenders.
Many states require a license number on contracts and invoices, and clients or lenders may ask for proof of insurance.
A deposit of 10 to 50 percent at signing is normal, often capped by state law for home improvement work, so check your local rules. Larger jobs usually bill a progress payment when piers or major structural work is complete and the balance after final lift, cleanup, and inspection. Balances are commonly due on receipt or within 7 to 15 days of completion. Late fees of 1 to 1.5 percent per month are typical if stated in the contract. Checks, ACH, and credit cards are all used, and homeowners paying through a lender or insurance claim may pay on a draw schedule, so confirm requirements before starting.
Tie each payment to something visible, such as pier installation complete or lift finished. This keeps your cash flow ahead of material and crew costs and gives the client a clear reason for each payment.
Hitting rock, buried utilities, or a second failed section is common. Get written approval for added piers or work and list them as separate invoice lines so the original contract total stays clear.
Schedule the walkthrough, confirm any inspection sign-off, then invoice the balance. Clients are far less likely to dispute a payment after they have seen the finished lift and cleaned site.
Before and after photos, manometer or laser level readings, and pier logs back up your invoice and protect you if a client later claims the work was incomplete.
If payment is coming from insurance or a mortgage draw, ask what documents they need, such as engineer letters, lien waivers, and invoices, so payment does not stall at the end.
Either way works. Many contractors offer free inspections, others charge $250 to $800 and credit it toward the job if the client signs. If you charge for it, show it on the invoice, with the credit as a separate line if applicable.
Use a signed change order that states the number of extra piers, the price per pier, and the reason. Then list them as their own line items on the invoice so the client can match them to the approval.
Yes, deposits are normal, but many states limit the amount for residential home improvement contracts. Check your state's rules and state the deposit and its credit clearly on the invoice.
In many states contractors must show their license number on contracts and advertising, and some require it on invoices too. Putting it on every document is a safe habit, but check your state licensing board.
Refer to the signed scope, pier logs, photos, and elevation readings. Offer a walkthrough, and put any agreed warranty repairs in writing. Do not release the warranty paperwork until the balance is paid, if your contract allows.
Send a Foundation Repair estimate for approval, then turn it into an invoice when the work is done.
Foundation Repair estimate template