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Chicago, IL · Permit #101081716

401 W Ontario St

Interior work · Plumbing · Multifamily building

Reported project estimate$7,500,000Whole permitted job
Issued / readySep 16, 2026
Source statusActive

4 stories

Trade availability and construction progress are unconfirmed.

Suggested first contact

3f Construction, Llc.

General contractor

(312) 229-1200Published business phone · Checked Nov 2, 2026

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Who to approach

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5 suggested contact routes.

Company contact route

3f Construction, Llc.

General contractor

Estimator or purchasing department
Why this contact
Project connection
Company named on permit · #101081716
Responsibility
Suggested route · project assignment unconfirmed
Timing
Stage not established by checked evidence
Project connection source ↗

Last checked Nov 2, 2026. Confirm the responsible person and purchasing package with the company.

Published business phone(312) 229-1200 Source ↗ · Checked Nov 2, 2026
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Company contact route

Blackout Electric Services Inc

Electrical contractor

Trade estimator or purchasing department
Why this contact
Project connection
Company named on permit · #101081716
Responsibility
Suggested route · project assignment unconfirmed
Timing
Stage not established by checked evidence
Project connection source ↗

Last checked Nov 2, 2026. Confirm the responsible person and purchasing package with the company.

Published business phone(708) 655-8720 Source ↗ · Checked Nov 2, 2026
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Company contact route

Mechanical Brothers Co

Ventilation contractor

Trade estimator or purchasing department
Why this contact
Project connection
Company named on permit · #101081716
Responsibility
Suggested route · project assignment unconfirmed
Timing
Stage not established by checked evidence
Project connection source ↗

Last checked Nov 2, 2026. Confirm the responsible person and purchasing package with the company.

Published business phone(630) 935-5099 Source ↗ · Checked Nov 2, 2026
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Company contact route

Modern Masonry

Masonry contractor

Trade estimator or purchasing department
Why this contact
Project connection
Company named on permit · #101081716
Responsibility
Suggested route · project assignment unconfirmed
Timing
Stage not established by checked evidence
Project connection source ↗

Last checked Nov 2, 2026. Confirm the responsible person and purchasing package with the company.

Published business phone(312) 823-7908 Source ↗ · Checked Nov 2, 2026
Log in to keep private contact notes ↗
Company contact route

Toma's Plumbing Inc

Plumbing contractor

Trade estimator or purchasing department
Why this contact
Project connection
Company named on permit · #101081716
Responsibility
Suggested route · project assignment unconfirmed
Timing
Stage not established by checked evidence
Project connection source ↗

Last checked Nov 2, 2026. Confirm the responsible person and purchasing package with the company.

Published business phone(773) 616-5700 Source ↗ · Checked Nov 2, 2026
Log in to keep private contact notes ↗

Company contacts are starting points. Purchasing authority, reachability and open packages need confirmation. Your contact feedback stays private.

Work summary

Interior work · Plumbing · Multifamily building · 4 stories

Scope and permit evidence

Project features summarize the permit wording. The applicant reports the whole-job estimate; it is not a trade-package budget.

The issue date usually means ready to issue, subject to fee payment. It does not establish a start, completion date, or open bid.

Read the full original work description ↗
Contractors named on the permit
3f Construction, Llc. ↗General contractor
Blackout Electric Services Inc ↗Electrical contractor
Mechanical Brothers Co ↗Ventilation contractor
Modern Masonry ↗Masonry contractor
Toma's Plumbing Inc ↗Plumbing contractor

Names and roles come from Chicago’s records. A listed contractor is not an award notice.

Scope & timing

Work scope
Work described
Property type
Multifamily building · Residential
Construction start
Not established by this permit
Completion date
Not supplied

Interior work Plumbing

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Up to eight companies with potentially relevant offerings. Listing order does not establish company quality or availability. Confirm project requirements, products and availability. Suggestions do not establish a hiring relationship, open bid, construction start or readiness for cleaning.

Source & observation history

Source
Chicago Building Permits ↗
First observed
Oct 5, 2026, 6:56 a.m. ET
Last observed
Nov 2, 2026, 9:01 a.m. ET
View record changes (1)
Oct 5, 2026, 6:56 a.m. ETFirst observation
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