What foundation repair costs in Michigan: our estimates and what shapes a quote

What this page is, and what it is not

You came for a number, and the honest one is a model. We have not collected quotes or invoices from Michigan contractors, and we do not print prices copied from contractor or lead-generation sites. No government or extension source we read gives a Michigan price for foundation repair, piers, wall bracing, waterproofing or crawl space work. So each service page leads with an estimated range, built from published national ranges and adjusted by Michigan’s wage ratio, and labeled as an estimate. This guide lists them, then shows the evidence we can source and explains how to read a quote you already hold.

Our methodology says how we build the estimates, and it commits to saying how many quotes we collect and from when once we have them. Until then each service page carries the estimate, the wage and permit rows, and the method line.

Our estimates

Each range is a model, not a quote, and a real quote can land outside it. The method is on the editorial policy page.

• Foundation repair: $2,300 to $8,375 per project
• Foundation crack repair: $260 to $840 per crack repair
• Basement waterproofing: $4,375 to $13,500 per project
• Crawl space encapsulation: $2,300 to $15,300 per project
• Piers and underpinning: $890 to $1,950 per pier, installed
• Slab leveling: $445 to $1,575 per job
• Sump pump: $840 to $2,625 per pump, installed
• Radon mitigation: $1,075 to $2,425 per system, installed
• Foundation inspection: $320 to $685 per inspection
• Bowing wall repair: $70 to $665 per linear foot of wall
• Drainage: $2,375 to $18,400 per project

What shapes a quote

Two jobs with the same name can differ widely in price, which is one reason national ranges mislead. What moves a foundation quote is mostly scope, and a few questions will reveal it.

Start with how much of the structure is involved: one corner or the whole perimeter. Next comes the cause. A cracked wall caused by water pressure and one caused by settling are different repairs, and a company that braces the wall but leaves a downspout dumping beside it has treated what the cause did, not the cause. Excavation brings in digging access, a MISS DIG notice, and sometimes a city permit. Engineering is the last piece: the base code asks for an engineer’s design where walls face hydrostatic pressure or more than 48 inches of unbalanced backfill.

We attach no number to any one of these. The estimates above cover a whole job, and your quote moves up or down with the factors in this list.

The wage evidence

O*NET OnLine, a program of the U.S. Department of Labor, republishes Bureau of Labor Statistics 2025 wage data. For Michigan statewide, the median annual wage is $49,590 for construction laborers, $59,860 for cement masons and concrete finishers, $61,680 for carpenters and $92,100 for civil engineers. The 25th to 75th percentile spans $44,750 to $61,730 for laborers, $48,480 to $64,480 for masons, $49,500 to $72,990 for carpenters and $75,470 to $109,870 for civil engineers.

Read those as pay, not as prices. No wage category covers a foundation crew, a waterproofer or a radon installer exactly, and a customer’s price carries a contractor’s insurance, vehicle, equipment, overhead, profit and materials, none of which show up here. We treat these figures as unconfirmed because we read them through O*NET and not on the BLS site, whose pages would not open for us; check them with the BLS if the number matters to you.

The permit evidence

Permit fees are the part of a price a city publishes. A selection, as printed:

City	What the schedule prints
Ann Arbor	Basement waterproofing is charged as a building permit: $100 plus $10 per $1,000 of project cost for $1,000 to $50,000, a $15 application fee, plan examination at 20 percent of the permit fee, and a grading permit review
Dearborn	Permit processing fee $100; construction permit $100 plus $15 per $1,000 above $2,000; plumbing application lines of $15 for interior sub-soil drains and for sumps
Livonia	A $45 admin fee on the waterproofing checklist, plus a building permit and plan review fee based on construction cost, which we could not find a schedule for
Sterling Heights	Plumbing fee chart: basement waterproofing $55, radon $125, sump $25, sump to storm sewer $57
Warren	Plumbing application: basement waterproofing $80, sump $25; the building fee sheet is dated 2014, so confirm
Westland	Interior perimeter subsoil drain and sump pit $50, sump pump $20, plus a $100 administration fee
Lansing	Building permit $175 for $4,001 to $10,000 of valuation, with plan review at 20 percent of the permit fee on work over $3,000; no foundation line
Grand Rapids	Catch basin, sump or roof drain $5; the building permit chart is by construction value; no foundation line

These are the city’s fees, not your total. Troy’s schedule returned a page error and Detroit’s pages would not open for us, so we print nothing for them; ask each city for its current schedule. Schedules change each fiscal year. Ask for the current one.

The one government price: radon

EGLE publishes the only government dollar figures we found for a foundation-adjacent job, and even it publishes several. Its indoor radon page says a mitigation system in Michigan generally costs between $800 and $2,500 and is installed in a day or less. Its FAQ gives $750 to $1,500, and its real-estate page says $800 to $2,000 or more. Pick the page you quote. EGLE also gives short-term do-it-yourself test kits at $10 to $20 and long-term kits at $20 to $50. Our radon guide has the rest.

University of Minnesota Extension ranks wet basement fixes by cost without dollars: interior coatings cost less than a drainage system, and exterior drainage is the most costly but most effective. That is useful for sorting bids, and it is all the extension says.

How to compare two quotes

Put them side by side and check the same things on both.

1. Scope in writing. Same wall, same length, same method, same finish. If one bid covers less, it is not cheaper.
2. Itemized lines. Labor, materials, excavation, permit, and any engineering, each on its own line.
3. License number and craft. MCL 570.1114 requires a contract to state the license where one is required, and LARA lists the number as part of the contract. Look it up using our license guide. Work of $600 or more needs a license.
4. The permit. The contract should say who pulls it. LARA’s checklist says the contract should state the contractor will obtain all required building permits.
5. An engineer’s report attached, where the work is structural, written by someone who does not sell the repair.
6. The warranty. Is it transferable if you sell? Who backs it, the installer or a manufacturer? What voids it? We say nothing about how long a good one runs, because we found no source.

Question the diagnosis, not only the price

The question that changes the number most is whether the repair is needed at all. A company that diagnoses and sells has a reason to find a problem. Michigan state law exempts the planning and design of a detached one- or two-family home up to 3,500 square feet from the engineer license article, so no state rule forces an engineer into an ordinary repair, and a firm may offer engineering only if two-thirds of its principals are licensed engineers. A contractor advertising in-house engineers should show you a license. Our engineer guide says how to get a report from someone with nothing to sell, and we have no sourced price for that report either.

Foundation companies pay us for referrals. That is the reason we tell you to get the independent read first, before the quotes in this guide mean anything. The foundation repair page and crack repair page describe the work, and the permit guide covers city rules.