Building Department Office Hours: Monday through Friday 8:00 a.m. to 4:30 p.m.

Building Inspector - Monday through Friday 7:00 a.m. to 3:00 p.m.

The Building Department of Crest Hill reviews building plans, issues permit and contractor applications and performs inspections to ensure that construction conforms to applicable codes.  We also handle property code violations, rental inspections and new business inspections.

Check with the Building Department regarding permits for sheds, decks, swimming pools, fences, room additions, etc. The Commercial and Residential Permit Application forms can be downloaded from the applications tab on the home page.  The Building Department can be reached at (815) 741-5106.

If you are a contractor you must be registered to work within our city limits.  The Contractor Registration application can be downloaded from the applications tab on the home page.  All required documents and instructions are listed on the form.

Important Documents

Frequently Asked Questions

Do I need a building permit?
Most external changes to a property except for planting require a permit. Internal permits are required if you are installing or changing electrical, plumbing and structural or when you open the walls (remove drywall or plaster), as well some other items. Contact the building department to see if your project requires a permit.

How do I apply for a building permit?
Download either the commercial or residential building permit form from the applications tab on the home page, and fill it out completely. If you are doing external work, you must submit a plat of survey of the property indicating what you are doing with distances from property lines and existing structures. Most work also requires drawings with all existing and new construction clearly marked including measurements. If you have a homeowner’s association, you must submit a copy of their written approval. If you are a tenant, you must submit written permission from the property owner. Contact the building department for more specific information on your project.

I started work without a permit – now what?
You must stop all work and go through the application process. Once your permit has been picked up, you can resume work. You will be charged a penalty of three times the regular permit fee for beginning the work without a permit.

How long is my permit good?
You have 30 days from the date of issue to pick up the permit and six months from the date of issue to begin work. The permit is valid for one year from the date of issue.

Can I extend my permit?
Yes, you can request an extension in writing. You must notify us of the permit number, work site address, and date by which work will be completed. If you request the extension before the permit expires or within six months of the expiration date, you will be charged a fee of 1/12 of the current permit fee for each month the permit is extended. If you request the extension more than six months after the expiration date, you will be charged 100% of the current permit fee. The permit cannot be extended more than one year past its original expiration date.

I failed an inspection – do I owe a fee?
Yes, there is a fee of $100.00 for each failed inspection. This fee must be paid before a re-inspection can be scheduled.