Insights

Strategic Market Target healthcare and industrial facilities in Southern Wisconsin, especially Milwaukee and Madison, to leverage J.M. Brennan’s full-suite mechanical contracting services including HVAC, plumbing, fire protection, and building controls.

Integrated Services Position as a single-source contractor offering design, sustainable design, installation, and 24/7 service to differentiate from competitors who specialize in niche trades, appealing to facilities seeking streamlined project delivery.

Scale & Capabilities Leverage strong field workforce (skilled pipe fitters, plumbers, sheet metal workers, sprinkler fitters, controls techs, electricians) to pursue larger commercial and healthcare projects that require robust on-site capacity and quick mobilization.

Digital Collaboration Highlight use of modern tech stack and engagement at industry events (e.g., Stratus Innovate 2025) to attract buyers prioritizing advanced project controls, building automation, and integrated commissioning.

Financial Leverage Explore opportunities with mid-to-large projects in the $100M–$250M revenue range by targeting facilities with substantial mechanical, controls, and fire protection needs, aligning proposals with proven scale and service depth.

J.M. Brennan, Inc. Tech Stack

J.M. Brennan, Inc. uses 8 technology products and services including RSS, oEmbed, JSON-LD, and more. Explore J.M. Brennan, Inc.'s tech stack below.

  • RSS
    Content Management System
  • oEmbed
    Dev Tools
  • JSON-LD
    Javascript Frameworks
  • Modernizr
    Javascript Libraries
  • Priority Hints
    Performance
  • PHP
    Programming Languages
  • reCAPTCHA
    Security
  • Gravity Forms
    Web Platform Extensions

J.M. Brennan, Inc.'s Email Address Formats

J.M. Brennan, Inc. uses at least 1 format(s):
J.M. Brennan, Inc. Email FormatsExamplePercentage
FLast@jmbrennan.comJDoe@jmbrennan.com
72%
FirstL@jmbrennan.comJohnD@jmbrennan.com
28%

Frequently Asked Questions

What is J.M. Brennan, Inc.'s phone number?

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You can contact J.M. Brennan, Inc.'s main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is J.M. Brennan, Inc.'s official website and social media links?

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J.M. Brennan, Inc.'s official website is jmbrennan.com and has social profiles on LinkedIn.

How much revenue does J.M. Brennan, Inc. generate?

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As of July 2026, J.M. Brennan, Inc.'s annual revenue is estimated to be $100M - $250M.

What is J.M. Brennan, Inc.'s SIC code NAICS code?

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J.M. Brennan, Inc.'s SIC code is 7699 - Repair Shops and Related Services, Not Elsewhere Classified NAICS code is 23 - Construction.

How many employees does J.M. Brennan, Inc. have currently?

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As of July 2026, J.M. Brennan, Inc. has approximately 196 employees across 4 continents, including North AmericaAfricaEurope. Key team members include Director Of Construction Operations: J. H.Service Project Manager: J. E.Assistant Project Manager: D. C.. Explore J.M. Brennan, Inc.'s employee directory with LeadIQ.

What industry does J.M. Brennan, Inc. belong to?

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J.M. Brennan, Inc. operates in the Construction industry.

What technology does J.M. Brennan, Inc. use?

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J.M. Brennan, Inc.'s tech stack includes RSSoEmbedJSON-LDModernizrPriority HintsPHPreCAPTCHAGravity Forms.

What is J.M. Brennan, Inc.'s email format?

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J.M. Brennan, Inc.'s email format typically follows the pattern of FLast@jmbrennan.com. Find more J.M. Brennan, Inc. email formats with LeadIQ.

When was J.M. Brennan, Inc. founded?

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J.M. Brennan, Inc. was founded in 1932.
J.M. Brennan, Inc. logo

J.M. Brennan, Inc.

ConstructionWisconsin, United States51-200 Employees

J.M. Brennan, Inc. is a mechanical contracting firm based in Milwaukee, Wisconsin, offering a broad suite of services that covers high-performance HVAC, building controls, plumbing, process piping, industrial sheet metal, fire protection and monitoring, site utilities, and electrical work. The company combines engineering and sustainable design with around-the-clock service to support ongoing operations and project needs. Its customer base includes industrial, commercial, and healthcare facilities across Southern Wisconsin, with active work in Milwaukee and Madison. As a construction industry participant, it positions itself as a comprehensive provider capable of executing complex mechanical installations and ongoing maintenance across diverse facility types. The organization relies on a sizeable workforce of skilled trades professionals who perform pipe fitting, plumbing, sheet metal work, sprinkler systems, controls, service, and electrical tasks. A recent development is participation in Stratus Innovate 2025, where J.M. Brennan and PypeServer shared insights on fire protection fabrication.

Section iconCompany Overview

Phone number
SIC Code
7699 - Repair Shops and Related Services, Not Elsewhere Classified
NAICS Code
23 - Construction
Founded
1932
Employees
51-200

Section iconFunding & Financials

  • $100M - $250M

    J.M. Brennan, Inc.'s revenue is estimated to be in the range of $100M - $250M

Section iconFunding & Financials

  • $100M - $250M

    J.M. Brennan, Inc.'s revenue is estimated to be in the range of $100M - $250M

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