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Contractor name / Source history

Mechanical Inc Dba Helm Mechan

Filings naming this contractor, across the public source's longer history.

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Recent collected filings1
Earliest in these recordsSep 16, 2026
Latest in these recordsSep 16, 2026

This query uses the listed source name, ignoring letter case. Aliases and namesakes are not resolved, and this is not a company's verified complete work history. Dates mean issued / ready to issue. They do not establish construction start, completion, available bids, or work quality. Reported estimates are not added.

Filings by source date

Issued / ready
#101084518 · 400 S La Salle St$151,112,046

Source status: Active

Work description & named contractors

Interior work · Demolition

ABCO ELECTRICAL CONSTRUCTION & · Contractor-Electrical

BONUS ELECTRIC · Contractor-Electrical

KELSO-BURNETT CO. · Contractor-Electrical

ARCO/MURRAY NATIONAL CONSTRUCTION COMPANY LLC · Contractor-General Contractor

MECHANICAL INC DBA HELM MECHAN · Contractor-Plumber/Plumbing

AMS MECHANICAL SYSTEMS, INC. · Contractor-Refrigeration

AMS MECHANICAL SYSTEMS, INC. · Contractor-Ventilation

Official source record ↗Collected permit details ↗

Planning rows link to the City Clerk, ADU or Plan Commission source; their checked scope is shown on Planning. Application rows link to the public status portal and retain its separate date meanings. Permit source: City of Chicago Building Permits ↗. Queries cover available source filings from January 1, 2006, with up to 5,000 newest records. Voided/revoked permits are excluded by the source. Historical lookups stay separate from daily alerts and do not expand citywide coverage.