Building – Alterationcommercial_renovation
$3,400,000
401 N Michigan Ave, Chicago, IL
flag:roof_missingpluto:joined
MAPPED · refreshed 7h agoLast 10 days of permits fully visible publicly · daily refresh · Parcel-joined ~88% · 18 IBC cohorts · 12 DQ flags per row
Chicago building permits
Permits indexed
1,620,800
All 1,620,800 Chicago permits indexed — daily refresh, parcel-joined ~88%. Last 10 days fully visible publicly; older history via free signup or API. 18 IBC cohort tags. 12 field-level data-quality flags per row.
refreshed 7h ago · daily refresh active
1,620,800 permits in Chicago. Search filters across address, contractor, cohort, and permit type.v1 — filters in-memory across recent permits; full DuckDB-WASM 30-day slice ships next.
Chicago insights
Derived nightly from the silver dataset · last updated 2026-05-24 02:00 CTCommercial renovation activity in Chicago is up this month vs last
+9%
Top cohorts this quarter
commercial_renovation · multifamily_new · commercial_roofing
Most active neighborhood this week
The Loop
Commercial HVAC pre-winter prep
+24%
Recent commercial permits
Mechanical – Equipmentcommercial_hvac
$4,200,000
233 S Wacker Dr, Chicago, IL
flag:roof_estimatedpluto:joined
Building – New Buildingmultifamily_new
$38,900,000
1800 N Halsted St, Chicago, IL
flag:roof_estimatedpluto:joined
Building – Alterationcommercial_roofing
$1,820,000
5500 N Clark St, Chicago, IL
flag:roof_estimatedpluto:joined
Building – New Buildingcommercial_new
$84,200,000
950 W Fulton Market, Chicago, IL
flag:roof_estimatedpluto:joined
Building – Alterationcommercial_tenant_improvement
$980,000
200 E Randolph St, Chicago, IL
flag:roof_missingpluto:joined
Mechanical – Equipmentcommercial_hvac
$0
111 N State St, Chicago, IL
flag:val_zeroflag:roof_estimatedpluto:joined
Building – Alterationmultifamily_alteration
$2,400,000
3200 N Lake Shore Dr, Chicago, IL
flag:roof_missingpluto:joined
Building – Alterationcommercial_roofing
$1,240,000
1601 W Madison St, Chicago, IL
flag:roof_estimatedpluto:joined
Building – New Buildingindustrial_new
$22,400,000
4400 S Damen Ave, Chicago, IL
flag:roof_estimatedpluto:joined
Building – Alterationcommercial_renovation
$1,840,000
1000 N State St, Chicago, IL
flag:roof_missingpluto:joined
Electrical – Fire Alarmfire_alarm
$240,000
875 N Michigan Ave, Chicago, IL
All values measuredpluto:joined
Why this page exists
Chicago on PermitCore: daily-refreshed, IBC-cohort-tagged, DQ-flagged.
Parcel-joined geometry across Chicago.
Every commercial permit joined to its lot polygon where source data permits. Join rate Parcel-joined ~88%. Unjoined rows are flagged with addr_unmatched, not silently dropped.
Daily refresh from the metro's open-data portals.
Refreshed every 24h from Chicago's public permit datasets. Competitors typically update on the 1st and 15th with multi-week processing lag. PermitCore ingests, cohort-classifies, and DQ-flags by 02:00 local.
Field-level DQ flags on every row.
12 data-quality flags per row. Cell-level transparency on valuation, roof area, IBC class, parcel join, dedup, date sanity. Filter or weight by flag in API queries.
Top Chicago contractors
Ranked by permit count, trailing 90 days · Each links to the contractor pageLakefront Construction LLCcommercial_new · The Loop · Fulton Market · Pilsen124Windy City Mechanical Inccommercial_hvac · West Loop · The Loop168Midwest Multifamily Groupmultifamily_new · Lincoln Park · Lakeview78Great Lakes Roofing Cocommercial_roofing · Andersonville · Near West Side156Midwest Interior Buildcommercial_tenant_improvement · The Loop · Gold Coast142Chicago Fire & Safetyfire_alarm · Magnificent Mile · The Loop92Midwest Demolitioncommercial_demolition · The Loop · Pilsen36
Chicago by cohort
Refreshed hourly via /v1/jurisdictions/chicago/cohorts/distribution · Each links to the cohort pageCommercial Alterationcommercial_alteration114,928Commercial Signage Permitscommercial_signage54,232Commercial New Constructioncommercial_new8,826Multifamily New Constructionmultifamily_new3,752Multifamily Alterationmultifamily_alteration1ADU-Qualifying Constructionadu_qualifying—Civic Constructioncivic—Commercial Demolitioncommercial_demolition—Commercial MEPcommercial_mep—Commercial Pool Constructioncommercial_pool—Commercial Shell-Only Constructioncommercial_shell_only—Industrial New Constructionindustrial_new—Residential Alterationresidential_alteration—Residential Demolitionresidential_demolition—Residential Foundation-Onlyresidential_foundation_only—Residential MEPresidential_mep—Residential New (Single-Family)residential_new_sf—Temporary Construction Supporttemporary_construction_support—
Programmatic access
Get the Chicago permit feed in your stack.
Self-serve API tiers. No sales calls. Pay with a card. MCP server ships day-1 for AI agents. npm install @permitcore/mcp and you're running.
Anonymous — last 10 days of permits visible on every page; no signup neededFree — signup unlocks 1,000 req/day · 6 cohorts · MCP server · 5K row exports/monthHobby · $49/mo — 10K req/mo · all 18 cohorts · webhooks · 1-year historyBuilder · $149/mo — 100K req/mo · full history · 5 webhooks · 48h support SLA
Custom delivery
Want Chicago permit data delivered to your CRM or warehouse?
Self-serve API tiers cover most use cases. If you need direct delivery to Salesforce, HubSpot, Snowflake, BigQuery, or a custom warehouse — tell us the shape and we'll scope a path. Replies within one business day.