Pier and Beam Foundation Repair Cost: What to Expect

Cost Breakdown by Component

Pier and beam foundation repair costs are more modular than slab underpinning: you’re paying for individual repairs to specific components rather than a whole-system piering project. The unit prices below are typical line items when the work is part of a larger job. For how each repair is carried out, see the guide to pier and beam repair methods.

Why Line-Item Prices and National Averages Differ

The table above shows what a contractor adds for one more pier or beam when the crew, jacks, and shoring are already under the house. National cost guides often price each repair as its own project, so their per-unit figures run several times higher:

Both columns can be right. A one-pier job still pays for the trip, setup, temporary support, and any digging, spread across a single unit, and HomeAdvisor puts typical foundation labor at about $200 an hour. If your quote covers one or two items, expect a total nearer the right-hand column. If it covers a dozen piers, the math should land nearer the left, and a bid charging the high rate on every pier deserves a question.

What Drives the Cost

1. How Many Piers Need Work

Each pier is a separate line item. A house with 20 piers and 5 that have settled significantly is a $1,500-$3,000 project. A house where all 20 piers need replacement is a $5,000-$12,000 project.

2. Structural vs. Cosmetic

If the floor is bouncy but structurally sound and the bounce is from undersized joists rather than settled piers, the fix is adding mid-span support, which costs less than replacing failed piers.

3. Crawlspace Conditions

A dry, accessible crawlspace with good clearance is faster and less expensive to work in. A low, muddy crawlspace with standing water requires more labor for the same structural work.

4. Moisture Remediation Scope

If the crawlspace has moisture damage, encapsulation and/or drainage is often recommended alongside structural repair. This can double the project cost, but it is necessary to protect the new structural work from the same moisture that damaged the original.

5. Pest Damage Extent

If termites or rot have affected multiple beams and joists throughout the crawlspace, repair scope (and cost) can be substantial. Pest treatment must precede structural work.

6. Pier Material

What the existing piers are made of shapes both the method and the bill. HomeGuide’s national ranges for a repair project by pier type:

7. Perimeter Settlement

Interior piers usually rest on shallow pads, so re-shimming handles most interior sag. When the perimeter beam itself has settled, the fix moves into the soil with steel piers driven or screwed down to load-bearing strata. HomeAdvisor reports $1,000 to $3,000 per pier for this work, and HomeGuide puts a full piering or underpinning job at $10,000 to $20,000 or more. The helical piers cost guide breaks down that part of a quote.

8. Access and Obstacles

The 2021 International Residential Code calls for a crawlspace access opening of at least 18 by 24 inches through the floor or 16 by 24 inches through a perimeter wall (Section R408.4). Older homes with a smaller hatch may need a new opening cut before work starts. Outside, shrubs, A/C units, and parked cars slow crews down, so clearing the work path yourself is one of the few costs you control directly.

9. Permits, Engineering, and Local Rates

Re-shimming existing piers rarely needs a permit. New piers mean new footings and posts, which fall under the IRC’s foundation chapter (Sections R403 and R407), so they are more likely to need a permit, an inspection, and sometimes an engineer’s letter. HomeGuide puts a structural engineer’s inspection and report at $150 to $1,000; HomeAdvisor’s range for a foundation report is $340 to $780. A pier and beam home also costs more to inspect than a slab, as the foundation inspection cost guide shows. Repairs near big cities cost more, and rural jobs can carry extra travel and delivery charges.

Cost by Project Scope

Worked Cost Estimates

These examples apply this page’s unit prices to four common situations. They are illustrations, not quotes: your contractor’s count of piers and feet of beam sets the real number.

The pier count moves the total more than anything else, so ask each contractor to write down how many piers they will shim, replace, or add. Moisture and pest work can rival the structural work: in the third example they add $2,500 to $10,000, which is why that job can run past the typical full-remediation tier. Perimeter piers change the budget tier entirely, so the contractor should say whether the settlement is in the interior piers or at the perimeter before pricing either. To rough out your own number, multiply each item in your inspection findings by the unit prices above and add about 10 percent for rot that only appears once insulation or flooring comes off.

Code Requirements That Can Add to the Bill

Most U.S. jurisdictions base their residential rules on the International Residential Code. Chapter 4 of the 2021 edition explains several line items that surprise homeowners:

• Minimum post sizes (Section R407.3). Wood columns must be at least 4x4 nominal and steel columns at least 3-inch Schedule 40 pipe or an approved equivalent, restrained at the bottom against sideways movement. Undersized or loose posts found during a repair may need replacing, not shimming.
• Decay protection (Section R407.1). Wood columns must be protected against decay, which usually means pressure-treated or naturally durable lumber near the ground, a step up in material cost from the untreated posts under many older homes.
• Sealed crawlspaces (Section R408.3). An unvented crawlspace needs a continuous Class I vapor retarder with seams overlapped 6 inches and sealed, edges run 6 inches up the stem wall, and a moisture control such as an exhaust fan or conditioned air at 1 cfm per 50 square feet, or a dehumidifier sized at 70 pints a day per 1,000 square feet. That list is much of why full encapsulation runs $2,000-$8,000 while a basic ground barrier runs $500-$2,000.

Your building department decides which edition applies and whether local amendments change these details.

Costs a First Quote Often Leaves Out

• Termite treatment. HomeGuide estimates it adds $500 to $2,000, and it has to happen before new wood goes in.
• Drainage. If water caused the damage, the repair will not last without drainage work. HomeGuide’s national figures: gutters $2,200-$5,000 for a one-story home, regrading $1,000-$3,000, a French drain along one side $1,200-$4,500, and a sump pump $600-$2,500.
• Hidden rot. Damage behind insulation or under subflooring often appears only once work starts. Get per-joist and per-foot rates in writing so extra floor joist damage is billed at the quoted rate.
• Interior touch-ups. Lifting a floor toward level can reopen drywall cracks, shift trim, and change how doors hang.
• Future adjustments. Houses on expansive clay may need a few piers re-shimmed after unusually wet or dry years. Adjustable steel supports and a warranty that covers adjustment visits keep those follow-ups small.

If the whole crawlspace needs sealing, the crawl space encapsulation cost guide prices that project on its own.

What a Good Pier and Beam Quote Includes

A quote you can compare, and hold a contractor to, puts these items in writing:

1. A pier list or map: which piers get shimmed, replaced, or added, with a count for each. “Level the house” is not a scope.
2. Support type: concrete block, poured concrete, or adjustable steel, and whether new piers get new footings or pads.
3. Beam and joist quantities: linear feet of sistering, number of joists, and whether a main girder is replaced under temporary shoring.
4. Elevations: starting readings, the target level, and a commitment to after readings.
5. Moisture scope: vapor barrier thickness in mil, how seams and walls are sealed, and dehumidifier sizing for a sealed crawlspace.
6. Pest treatment: whether it is included, who does it, and confirmation that it comes before new wood.
7. Permits and engineering: who pulls the permit, whether an engineer’s letter is included, and what each costs.
8. Unit prices for surprises: the rate per extra pier, per foot of beam, and per joist if hidden rot turns up.
9. Warranty: length, what it covers (materials, labor, re-shimming visits), and whether it transfers to a buyer.
10. Payment and cleanup: the deposit, the final payment due on completion, and removal of debris and old material.

How to Evaluate Quotes

When comparing pier and beam repair quotes:

• Confirm what was inspected: the quote must be based on a physical crawlspace inspection
• Compare scopes, not just totals: one contractor may be quoting structural only; another may include encapsulation
• Ask about moisture recommendations: a contractor who does structural work without addressing moisture is leaving a future problem
• Check pier specifications: are they replacing with steel adjustable jacks (better) or concrete block (cheaper but less adjustable)?
• Verify pest treatment: confirm it is included, or that you handle it before they start work

Example: Three Bids for the Same House

Illustrative bids for a 1,600 sq ft house with 20 piers, 5 settled and 3 cracked, and a damp crawlspace:

Bid A shims the cracked piers instead of replacing them and ignores the moisture behind the settling, so the same piers are likely to drop again. Bid C replaces 12 piers the inspection found sound and prices full encapsulation where a vapor barrier may do; ask what evidence supports each item. Bid B matches the findings line for line, which makes it the one to negotiate from. A gap this wide usually comes down to scope rather than price, and an independent second opinion costs a fraction of the difference.

Ways to Keep the Bill Down

• Fix the water first. Pier and beam problems most often start with wood decay and settling tied to moisture or shifting soil, so piers bought without drainage fixes tend to be bought twice.
• Act early. A few settled piers cost hundreds to shim; left alone, the load shifts to neighboring piers and beams and the job grows.
• Ask for adjustable supports. They cost more per pier, but later corrections become a service call instead of a rebuild.

Homeowners insurance rarely pays for settlement, rot, or termite damage (see what insurance covers), so if the repair will not fit one payment, compare foundation repair financing options before signing.

Related Guides

• Pier and beam foundation repair methods
• Crawl space foundation repair cost
• Crawl space encapsulation cost
• House leveling cost
• Foundation inspection cost
• Helical piers cost
• Slab vs pier and beam