Most Oak Brook homeowners never see their contractor's state record. We check the pros we list against it where our automation reaches, and each listing shows what we found and when.
Quotes from window replacement pros, with their checks shown.
Free · No commitment
Pros like Midtown Home Improvements are in our network
What we check, how far each check reaches, and what it does not prove.
In the states our automated check reaches, we look the business up in the state business registry and read back its registration number and standing. The listing shows what came back and the date we checked, and it carries no registry badge at all where we have no result.
Where a contractor provides a certificate of insurance, we read the carrier, the coverage, and the expiration date straight off the document. We do not contact carriers, so ask for a current certificate before work starts.
We read the contractor's own website for license and insurance claims and record what we find. This is the contractor describing themselves, so it earns a lower-confidence badge kept separate from a confirmed state record.
We pull BBB records, Google ratings and review counts, and years in business where those are available. These are context about the business, not a credential check, and we show them as their own signals.
Before an in-network partner account opens, someone on our team reads the state record and the certificate of insurance line by line. That review applies to partner accounts, not to every pro we list.
This is what we have checked in Oak Brook so far. Every contractor we found is shown here, not ranked.
How to Read These Badges
Here’s what we’ve checked on Midtown Home Improvements so far.
Here’s what we’ve checked on Assembly Squad Remodeling Chicago so far.
The contractors we list are screened before you see them, and each listing shows what we found.
Get Free Quotes →Typical Range
$5,000 to $20,000
Typical Window Replacement projects in Oak Brook run $5,000 to $20,000.
How We Screen
AboveBoardPros is a matching service. These checks apply to the pros we list. We connect you with independent contractors and do not perform the work ourselves.
Oak Brook Coverage
2 contractors in database
5 ZIPs covered
Median income: $150,000 to $199,999
Typically $5,000 to $20,000 in Oak Brook, depending on scope and materials. Get competing bids to calibrate the actual range for your project.
Yes. Oak Brook enforces active licensure and insurance requirements. Ask any contractor for their registration number and verify it at the IL state licensing website before signing a contract.
Window replacement in an existing opening typically does not require a permit. Enlarging or creating new window openings requires a structural permit. Some jurisdictions require energy code compliance documentation for new window installations.
In Illinois, contractor licensing is tracked by the Illinois Department of Financial and Professional Regulation (IDFPR). You can look up any contractor's license status directly at https://idfpr.illinois.gov/checklicense.html. To file a complaint or check for consumer alerts, use the Illinois Attorney General's consumer complaint page at https://forms.illinoisattorneygeneral.gov/Forms/ConsumerComplaints_ComplaintForm. Where our automated check reaches a state, we cross-check the business registry for the pros we list, and every listing shows what that check found.
Screened against state business registries where our automated check reaches.
Nearby areas: Chicago
Window salespeople say new windows pay for themselves in energy savings. The math says otherwise — but the real ROI calculation still makes a strong case for replacement.
Double-pane windows cost $500–$1,100 per window installed. Triple-pane adds $100–$300 per window for 10–15% better energy efficiency. The payback period is 12–25 years — here's when the math works and when it doesn't.
General liability, workers' comp, and bonding explained — and why a Certificate of Insurance is not the same as actual coverage. What to check before anyone sets foot on your property.
Before you commit to a kitchen overhaul or deck addition, see exactly what each project returns at resale. Our ROI calculator uses 2025 Cost vs. Value data to show you the numbers in seconds.
Home equity loans, HELOCs, cash-out refinance, personal loans, and contractor financing all have different rates and risks. Here's how to choose the right option for your project in 2025.
Most homeowners sign contractor contracts they don't fully understand. Here are the 8 clauses that create risk — and the 5 things every legitimate contract must include.
