City · City of Chicago Department of Buildings
Mason contractor license
Mason work inside the city needs a City of Chicago mason contractor license.

What a concrete and masonry website in Chicago has to show: the license rules that apply, the counties you can serve, and a free audit of the site you have now.
Free, on this page. Or get your free demo. Nothing to pay until it's delivered.
Businesses: concrete foundation and masonry contractors with paid staff in the Chicago-Naperville-Elgin, IL-IN metro. Census County Business Patterns, 2023. Counties: Census metro and county estimates, 2024.

License
What Chicago asks of a concrete and masonry business, and where your website comes in.
Checked 2026-10-05 at each source. Not legal advice: rules change, so check with the board before you rely on one.
City · City of Chicago Department of Buildings
Mason work inside the city needs a City of Chicago mason contractor license.
On your website
Put the number in the footer of every page and beside every quote form, under the business name it is issued to. No rule we found asks for it on an ad here. It is still the first thing a careful customer checks.
Service area
The Chicago-Naperville-Elgin, IL-IN metro: 13 counties in 2 states.
Illinois law holds across the state; City of Chicago licenses cover work inside the city. The metro also reaches four Indiana counties, where neither applies.
Census metro and county estimates, 2024Census County Business Patterns, 2023, by county
Concrete foundation and masonry contractors with paid staff, by county, 2023.
Free audit
Type your website and get a plain report, written for concrete and masonry businesses. Then compare it with the license and service area notes above.
Written for concrete and masonry businesses.
Every finding is something we measured on your site. Nothing is guessed.
A free demo of your new site in 48 hours.
Nothing to pay until it's delivered.
Then 7 days to pay, 10% off if paid within the first 48 hours.
More pages
Everything a concrete and masonry site needs, wherever you work, is on one page.
Concrete and masonry, the full pageNew York City · every home-improvement trade
Driveways, patios and sidewalks at a home count as home improvement work: a DCWP license, and its number in every ad. 6 RCNY §2-222(a)
Next step
A free demo of your new site in 48 hours.
Nothing to pay until it's delivered.