# 4437 N KOSTNER AVE, Chicago IL: HVAC / Mechanical permit 101087278 ($370,000)

**Subcontractor Bid Window & Material Demand Score:** 76/100

| Field | Value |
|---|---|
| Metro | Chicago, IL |
| Address | 4437 N KOSTNER AVE |
| Permit number | 101087278 |
| Permit type | PERMIT - RENOVATION/ALTERATION |
| Trade | HVAC / Mechanical |
| Valuation | $370,000 |
| Issued | 2026-10-23 |
| Applied | 2026-08-14 |
| Status | ACTIVE |
| General contractor | AM & L ELECTRIC, INC. |
| Description | SPR 2019 CBRC:M NEW AT GRADE MUDROOM ADDITION AND BACK OF HOUSE RENOVATION AT AN EXISTING 3-STORY FRAMED SINGLE FAMILY HOME. THE HOUSE IS EQUIPPED WITH AN EXISTING SPRINKLER SYSTEM. ALL ELECTRICAL, PLUMBING AND MECHANICAL SERVICES WILL REMAIN. WORK OUTSIDE THE MAIN WORK AREAS CONSIST OF WINDOW REPLACEMENT(OCCUPANCY GROUP R-5; TYPE V-A CONSTRUCTION) |

## Why this score
- $370,000 project.
- Issued 12 days ago: trade packages are often still being bought out.
- HVAC / Mechanical scope named on the permit: a direct fit for that trade.
- General contractor on record, so you know who to contact.

Source: City of Austin, City of Chicago, City of Los Angeles, Montgomery County MD and City of Cincinnati open-data building permits (https://data.cityofchicago.org/resource/ydr8-5enu.json?permit_=101087278). Last refreshed: 2026-11-04T01:28:41.771Z.
Permit data comes from official municipal open-data portals and may lag or contain errors. Informational only.