# Celtic Environmental Services, LLC: asbestos abatement permit, residential, 5+ units (1,004 sq ft), 1401 N Harlem Ave, Oak Park, IL (work from 2026-09-18)

**Score:** 35/100

| Field | Value |
|---|---|
| Contractor | Celtic Environmental Services, LLC |
| Project | Asbestos abatement |
| Building | Residential, 5+ units, 1,004 sq ft, 2 floors |
| Location | 1401 N Harlem Ave, Oak Park, IL, 60302 |
| Use | Apt B to Apt B |
| Permit | 20170905 |
| Approved | 2026-09-08 |
| Work | 2026-09-18 to 2026-09-18 |

## Why this score
- Residential, 5+ units.

Source: Cook County Department of Environment and Sustainability asbestos and demolition permits (datacatalog.cookcountyil.gov) (https://datacatalog.cookcountyil.gov/d/gpmj-6p9q). Last refreshed: 2026-11-04T06:09:02.855Z.
From Cook County Department of Environment and Sustainability permit data, which covers suburban Cook County (the City of Chicago issues its own permits). Dates are as filed and may change. Permits filed by individuals are excluded, and homes are shown by town and ZIP only. Verify with Cook County.