What was permitted
Residents in Humboldt Park can observe a major renovation project underway at 4131 W Hirsch St, involving the construction of a second-floor addition to an existing single-family home. This expansion will add two bedrooms and one bathroom, along with relocating the laundry room.
The permit for this renovation was issued on October 23, 2026, and is active. The reported project cost is $142,800, and the work is being managed by MJ ELECTRICAL SERVICES CO.
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View the official permit record
Tracking number, work description, cost and dates
View the official permit record
Tracking number, work description, cost and dates
| Tracking number | 101084037 |
|---|---|
| Work permit # | — |
| Job filing number | — |
| Work type | — |
| Status | ACTIVE |
| Job description | CONSTRUCTING A PROPOSED SECOND FLOOR ADDITION TO AN EXISTING SINGLE FAMILY RESIDENCE CONSISTING OF (2) BEDROOMS, (1) BATHROOM AND RELOCATE LAUNDRY ROOM. FIRST FLOOR MODIFICATIONS FOR NEW STAIRWAY, INCLUDING ALL ASSOCIATED MECHANICAL, ELECTRICAL AND PLUMBING PER PLANS, REVIEWS AND INSPECTIONS. |
| Floor / unit | — |
| Estimated cost | $142,800 |
| Approved | June 9, 2026 |
| Issued | October 23, 2026 |
| Expires | — |
| BBL | — |
| BIN | — |
Property owner
Nathanael Castro
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