How to Hire a Licensed Foundation Repair Contractor in Chicago, IL
Hiring the right foundation contractor in Chicago means understanding a licensing system that works differently than most of the country. Illinois has no statewide general contractor license, so the protection homeowners rely on comes almost entirely from the City of Chicago's own licensing, permitting, and insurance requirements, administered through the Department of Buildings. If you don't know to check for a City of Chicago general contractor license, a valid Department of Buildings permit, and proof of insurance and bonding, it's easy to end up hiring someone who isn't actually authorized to do structural work inside city limits. This guide walks through exactly what to verify before signing a contract for foundation repair, underpinning, or basement wall work anywhere in Chicago.
By Jason Green · Foundation Repair · Published August 28, 2026 · 9 min read
Why Illinois's lack of a state license makes city rules matter more
Because Illinois doesn't license general contractors at the state level, homeowners in most of the state have to rely almost entirely on insurance verification, references, and business registration to vet a contractor. Chicago is different: the city itself requires a General Contractor license from the Department of Buildings for most construction, alteration, repair, and demolition work performed within city limits, and that license is the real backstop protecting Chicago homeowners.
This distinction matters practically. A contractor who is perfectly legal to do foundation work in a nearby suburb or downstate town might not hold the City of Chicago license required to legally work inside the city, so always confirm city-specific licensing rather than assuming a company that does good work elsewhere in Illinois is automatically cleared to work in Chicago.
How to verify a City of Chicago general contractor license
The Department of Buildings issues general contractor licenses in classes tied to the dollar value of work a contractor may legally perform, and each class carries its own insurance and bonding requirements. Before hiring, ask for the contractor's license number and confirm it's active and classed high enough to cover your project's expected cost, using the city's Business Affairs and Consumer Protection license lookup or the Chicago Data Portal's business license dataset.
Don't rely on a printed license card alone, since licenses can lapse or be suspended after they were issued. A quick online lookup takes a few minutes and confirms current status rather than just past issuance.
Confirming insurance, bonding, and the engineer's credentials
Ask for a certificate of insurance showing general liability coverage and workers' compensation, and confirm the bond amount required for their license class is actually in place, since these protections are what cover you if something goes wrong during excavation or pier installation near your home or a neighboring property. For any structural foundation work, also ask for the name and IDFPR license number of the structural engineer who prepared or will prepare your repair plan, since that person is licensed separately from the contractor through the Illinois Department of Financial and Professional Regulation.
It's reasonable to call the insurance carrier directly to confirm a policy is active if a job is large or if something about the paperwork feels off. Legitimate contractors expect this kind of scrutiny on structural work and shouldn't push back on it.
Making sure the permit actually gets pulled
Structural foundation work in Chicago, including underpinning, pier installation, and wall bracing, needs a permit through the Department of Buildings, typically filed through the city's Express Permit Program that replaced the older Easy Permit Process in 2023. Ask specifically who is filing the permit, get the permit number once it's submitted, and don't let excavation or pier installation start before the permit is issued.
You can also check permit status yourself through the city's permit search tools once a contractor gives you the address and permit number, which gives you independent confirmation the paperwork is real rather than relying entirely on the contractor's word.
Getting multiple bids and comparing them fairly
Get at least two or three quotes for anything beyond minor crack sealing, and make sure each contractor is proposing to address the same scope, since one company recommending 8 piers and another recommending 14 for the same house is a sign you need a tie-breaking, independent structural engineer's opinion. Ask every bidder the same set of licensing and permit questions so you're comparing apples to apples, not just comparing bottom-line prices. You can compare up to three vetted local pros for your project by entering your ZIP code.
Typical cost ranges
| Structural engineer evaluation letter (IDFPR licensed) | $500 - $1,200 |
| Department of Buildings permit fee, structural foundation work | $200 - $800 |
| Bowing wall reinforcement (per wall) | $3,500 - $8,500 |
| Underpinning, per pier | $1,300 - $2,200 |
Ranges are general estimates gathered from homeowner-reported quotes, not an offer or a quote for your project.
Common questions
Does Illinois license foundation repair contractors?
No, Illinois has no statewide general contractor license. Inside Chicago, the city itself requires a General Contractor license through the Department of Buildings, which is the license that actually matters for hiring.
How do I check if a Chicago contractor's license is active?
Use the City of Chicago Business Affairs and Consumer Protection license lookup or the Chicago Data Portal's business license dataset to confirm the license number is current and in the right class for your project's value.
Who pulls the permit for foundation work in Chicago?
A licensed City of Chicago general contractor (or, in limited cases, the homeowner acting as their own contractor) files the permit through the Department of Buildings' Express Permit Program. Ask for the permit number once it's submitted.
Is the structural engineer the same as the contractor?
No. The contractor performs the physical repair, while the structural engineer, licensed separately by IDFPR, evaluates the problem and often prepares the stamped plan required for the permit.
What insurance should a Chicago foundation contractor carry?
General liability insurance and workers' compensation at minimum, along with a bond sized to their City of Chicago license class. Ask for certificates and confirm coverage is active before work begins.
How many quotes should I get for foundation repair in Chicago?
At least two or three for anything beyond minor cosmetic crack repair, since pier counts and recommended repair methods can vary significantly between companies for the same house.
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Every foundation contractor in our network agrees to three things.
Show up
Call back. Keep appointments. And if something changes, communicate it.
Quote honestly
Clear scope, pier counts, and pricing in writing—so you know what you're agreeing to.
Finish the work
See the repair through, including the drainage and cleanup that was quoted.
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