Most Alton 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 home addition pros, with their checks shown.
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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 Alton 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.
The contractors we list are screened before you see them, and each listing shows what we found.
Get Free Quotes →Typical Range
$40,000 to $150,000
Typical Home Addition projects in Alton run $40,000 to $150,000.
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.
Alton Coverage
1 contractors in database
5 ZIPs covered
Median income: about $55,000
Typically $40,000 to $150,000 in Alton, depending on scope and materials. Get competing bids to calibrate the actual range for your project.
Yes. Alton 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.
Home additions always require a building permit. The permit process covers structural plans, foundation, framing, electrical, and final inspections at multiple stages. No licensed contractor will begin an addition without pulling permits, and unpermitted additions must be disclosed in any home sale.
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: St. Louis
All home additions require permits for structural, electrical, plumbing, and HVAC work. Permit costs run 0.5–2% of project cost. Here's what gets inspected, how long approval takes, and what happens if you skip it.
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.
Not every problem needs a contractor today — but some absolutely do. Use our home repair urgency checker to find out if your issue needs immediate action, a 2-week appointment, or just monitoring.
Bump-outs cost $5,000–$30,000 and expand a room 2–15 feet without new foundation work. Full additions cost $30,000–$100,000+ and require foundation, framing, and roof extension. Here's how to know which your project actually needs.
Home additions cost $150–$310 per square foot for finished living space, with second-story additions running 25–40% more. Use our estimator to get a realistic budget range before you meet with a general contractor.
Converting an attached garage to living space costs $15,000–$50,000 depending on scope. ROI is 65–80% — better than most additions. But there are real tradeoffs in cold climates and HOA neighborhoods.
