Do You Need a Permit to Pour Concrete in Chicago?

Most owners asking about a City of Chicago concrete permit want to know one thing: can the crew pour tomorrow, or is there paperwork first? The honest answer is that a flat walk on your own lot usually has no building permit, and a few common situations flip that quickly. Here is what the City's pages say, so you can ask the right questions before the forms go up.

What the City's rules say about pouring concrete

Chicago's basic rule is that a building permit is required before most construction, demolition and repair work. A limited range of site work and minor work is exempt, and exempt work still has to meet all construction codes (City of Chicago).

For flat concrete on private property, the City's list of work that needs no permit includes installing, altering or removing a noncombustible (concrete or brick) sidewalk, patio or walkway, as long as it is (City of Chicago):

• not in or on the public way,
• not more than 30 inches above adjacent grade, and
• not over any basement or story below.

It also lists in-kind replacement of a concrete, brick or asphalt parking surface or driveway as exempt. But a permit is required to establish, expand or eliminate off-street parking (City of Chicago). Same slab, same place is one thing. A new parking pad where there was a yard is another.

When a concrete job does need a permit

The exemption has edges. These are the situations that most often tip a job over, and where we would call the Department of Buildings before pouring:

• It sits high or over something. A raised patio, landing or platform more than 30 inches above grade, or one that covers a basement or a space below, is outside the exemption (City of Chicago).
• It is structural. Repairs lose their exemption if they remove or cut a load-bearing support or change required egress (City of Chicago).
• It is a bigger concrete repair. The City's Express masonry page covers concrete repair up to 100 square feet without drawings, and up to 5,000 square feet with drawings by an Illinois architect or structural engineer. Reconfiguring concrete elements is not eligible for Express (City of Chicago).
• It adds, widens or removes parking. That needs a permit even though in-kind driveway replacement does not (City of Chicago).

Concrete steps and front stoops are the grey area. They are often tied to the building and sit higher than a walk. We would not assume they are exempt. Ask the Department of Buildings with your address and a photo, and see our guide on concrete steps for how repair and replacement usually play out.

The public way is a different permit

If any part of the job touches the sidewalk, curb, alley or parkway, that is the public way, and the rules change. Work there needs a permit from the Chicago Department of Transportation (CDOT), separate from the Department of Buildings (City of Chicago). So does putting a dumpster, scaffolding or stored materials on the sidewalk or street (City of Chicago).

This is the trap on a typical Chicago lot: the private walk and the public sidewalk run together, so a job that looks like one pour is really two jurisdictions. For driveway aprons and curb cuts, see the CDOT driveway permit rules. For the City's own sidewalk repair program, see the Shared Cost Sidewalk Program.

Who is allowed to do the work

Chicago generally requires a mason license for work in concrete and stone. But the City's exceptions to the license include brick or concrete sidewalks, concrete paving, and slab-on-grade foundations for single-story non-occupiable structures such as sheds and garages (City of Chicago). There is also an exception for owners of a primary residence that is single-family or a multifamily of 3 stories or fewer and 6 or fewer units, one property per calendar year (City of Chicago).

So a flat-slab crew often does not need a mason license, which is a licensing fact, not a quality guarantee. Whoever pours is still responsible for subgrade, thickness, joints and finish. On anything that does need a permit, ask for the permit number before work starts.

When drawings come into it

For most Express-eligible repair work the City does not require architect or engineer documents. Concrete repair over 100 square feet is one of the specific triggers that does require drawings by an Illinois-licensed architect or engineer (City of Chicago). A plan-based permit also requires them.

How to check before you pour

1. Is the concrete in or touching the public way (sidewalk, curb, alley, parkway)?
2. Is any part more than 30 inches above grade or over a basement or a space below?
3. Are you adding, widening or removing parking?
4. Is it an in-kind replacement, same material and same place?
5. Who is pulling each permit, and what are the numbers?

You can look up permits and violations by address on the City's building records search. The Express program that handles small repair permits replaced the old Easy Permit process in November 2023 (City of Chicago). For a broader list of what needs no permit, see our no-permit overview. When you want a straight answer on your slab, our concrete crew can look at it, and the concrete and sidewalk guide covers the rest.

Common questions

This article explains general rules and common situations in Chicago. It is not legal advice, and City rules change. For a specific property, check with the Chicago Department of Buildings or a licensed professional.