1243 N KOSTNER AVE, Chicago, IL is a rental building in Humboldt Park, Chicago. See every violation, 311 complaint, tenant review, and the LucidIQ score — before you sign a lease.
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Asking rent per bedroom type — switch tabs to see each with effective (concession-net) rent.
Monthly counts over the last 7 years · all data sources
No HPD records on file in the last 7 years.
Humboldt Park · March 2026
Best & worst months to sign a lease
Potential savings: ~13% by timing your move to August.
Portfolio-level grade reflects the landlord's buildings across the city, weighted by unit count. Individual building grades may differ.
View full landlord profileTop 5 by score · of 45 total
ACRIS deeds and regulatory filings
DOB Violation — PERMIT REQUIRED - CONTRACTOR
DOB Violation — REPAIR/REBUILD GARAGE OR SHED
DOB Violation — REPAIR EXTERIOR WALL
DOB Violation — RATS-ELEVATE MATERIAL 18"
DOB Violation — REPAIR LINTELS
DOB Violation — REPAIR/WRECK DANGER RESID PREM
Humboldt Park is defined by its massive namesake park, its Puerto Rican heritage — the giant steel flags on Division Street mark Paseo Boricua — and an arts community fighting to stay rooted as development pressure mounts.