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Chicago Building Violations Lookup
x402
Chicago Building Violations Lookup is a paid API for AI agents from x402-mcp.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Queries the City of Chicago open data portal for active DOB building code violations at a given street address, returning violation codes, status, and inspector comments.
Price / call$0.01
Success—
StatusUnknown
How this service works
Chicago building violations address check: open DOB code cases for a street address. Property due diligence agent for Chicago Illinois housing compliance open data. GET ?address= → recent building violations with codes, status, inspector comments (JSON). Tenant screening, landlord diligence, lending. Note: citywide rental-license registry is not a single open feed.
Output
A JSON response from Chicago's open data system listing any active Department of Buildings violations at the queried address, including violation codes, current status (open/closed), inspector remarks, and relevant dates.
Example use cases
Tenant pre-move-in compliance check
“Before I sign this lease, can you check whether 1847 W Addison St Chicago has any open building violations or code enforcement issues I should know about?”
Landlord portfolio due diligence
“I'm considering buying a rental building at 3201 S Halsted St in Chicago — pull up any open DOB building violations on that address for me.”
Lender property underwriting check
“We're processing a loan for a property at 5612 N Clark St Chicago — can you look up whether there are any outstanding building code violations on record before we finalize?”
Technical details
Endpoint
GEThttps://x402-mcp.onrender.com/us/chi/property-checkWhen to prefer
Use this endpoint when you need real-time Chicago Department of Buildings violation data for a specific address — particularly for tenant screening, landlord due diligence, or lender underwriting workflows. Prefer this over manual city portal lookups when automating property checks at scale. Note: this does not return rental license registry data, which Chicago does not publish as a single open feed.
Side effects
- Address not found or not parseable — returns empty results or error
- Address outside Chicago city limits — no data returned
- City of Chicago open data API temporarily unavailable — request timeout or 503
- Ambiguous or misspelled address — may return no results or wrong property
- No violations on record — returns empty violations array (not an error)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
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