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Contractor name / Source history

Mechanical Brothers Co

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

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Recent collected filings6
Earliest in these recordsJul 9, 2026
Latest in these recordsOct 26, 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
#101086394 · 306 W Adams St$200,000

Source status: Active

Work description & named contractors

Interior work · HVAC · Electrical · Plumbing

BOLEK ELECTRIC INC · Contractor-Electrical

D.O.M. PROPERTIES INVESTMENT INC · Contractor-General Contractor

PAWEL'S PLUMBING INC · Contractor-Plumber/Plumbing

MECHANICAL BROTHERS CO · Contractor-Ventilation

Issued / ready
#101081716 · 401 W Ontario St$7,500,000

Source status: Active

Work description & named contractors

Interior work · Plumbing · Multifamily building

BLACKOUT ELECTRIC SERVICES INC · Contractor-Electrical

3F CONSTRUCTION, LLC. · Contractor-General Contractor

MODERN MASONRY · Masonry Contractor

TOMA'S PLUMBING INC · Contractor-Plumber/Plumbing

MECHANICAL BROTHERS CO · Contractor-Ventilation

Issued / ready
#101087922 · 848 W George St$10,000

Source status: Active

Work description & named contractors

Interior work · Electrical · Multifamily building

SIRANT ELECTRIC, INC. · Contractor-Electrical

AMERICAN RESTORATION SERVICES INC. · Contractor-General Contractor

PETRO PARIYCHUK · Masonry Contractor

BRASERO PLUMBING & CONSTRUCTIO · Contractor-Plumber/Plumbing

MECHANICAL BROTHERS CO · Contractor-Ventilation

Issued / ready
#101081688 · 3624 N Tripp Ave$625,000

Source status: Active

Work description & named contractors

New construction · Single-family home

RAFAL SZARWARK · Contractor-Electrical

STRATUM BUILDERS, INC. · Contractor-General Contractor

ML & KL COMPANY · Contractor-Plumber/Plumbing

MECHANICAL BROTHERS CO · Contractor-Refrigeration

MECHANICAL BROTHERS CO · Contractor-Ventilation

Issued / ready
#101083939 · 3626 N Tripp Ave$680,000

Source status: Active

Work description & named contractors

New construction · Single-family home

RAFAL SZARWARK · Contractor-Electrical

STRATUM BUILDERS, INC. · Contractor-General Contractor

STRATUM BUILDERS INC · Masonry Contractor

ML & KL COMPANY · Contractor-Plumber/Plumbing

MECHANICAL BROTHERS CO · Contractor-Refrigeration

MECHANICAL BROTHERS CO · Contractor-Ventilation

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.