BREEN ENGINEERING, INC.
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Building Systems Engineering: Mechanical, Electrical, Plumbing & Fire & Life Safety

BREEN Engineering opened its doors as a Mechanical consultancy in 1997. BREEN’s expanded Building Systems Department now provides Mechanical, Electrical, Plumbing and Fire Protection and is active in a wide variety of project sectors, including Federal, educational, commercial offices, healthcare, retail, hospitality, multifamily and mixed use developments and renovations.

BREEN’s MEP engineers are comprised of both seasoned professionals and young innovators bringing fresh perspective, innovation, and efficient design. BREEN Engineers are LEED AP accredited and have successfully designed projects to Silver, Gold and Platinum standards.

Our MEP Engineers are equipped with a full toolbox of software, providing computer models for lighting designs, thermal energy performance evaluation, electrical and hydraulic calculations and ventilation systems.

BREEN was quick to embrace the evolving world of 3D modeling. Our project managers and drafters are highly proficient with Revit, having completed numerous projects utilizing this revolutionary design software.
We pride ourselves in providing efficient, practical and cost-effective designs.  Many projects are designed in coordination with our Civil and Structural departments, creating savings and simplified planning for our clients."
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Paul Breen, P.E., LEEP AP
President/CEO

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Paul is a licensed Mechanical Engineer with over 30 years of professional experience, beginning as assistant to his father in the family plumbing business in Wellington, New Zealand. Paul also worked as a plumbing contraction in London, England where he completed a course of study in Building Services Design and Construction Management. He subsequently held several professional mechanical engineering positions in London, England before relocating to the United States for career opportunities in 1992, rising to Owner/Partner of an established engineering consultancy in 1996. He founded P.A. Breen Associates in 1997, which became BREEN Engineering Incorporated in 2004.
Des Mahony, P.E., LEED AP
Vice President

Des brings a wealth of international experience to BREEN, working in several major cities around the globe, including London, Dubai, Wellington and Manila, before making the South Bay of Los Angeles his home. His career began in electrical contracting and progressed to design and consultancy when he joined DSSR Consulting Engineers – a company known for healthcare design. Des worked for over 12 years on numerous hospitals throughout the UK and has led other large international projects, such as the Emirates Towers in Dubai, as Engineer in Charge of Electrical Design. Des has provided engineering design and construction administration for high-rise towers, luxury hotels, shopping malls and office developments in various locales in the Middle East. A central leader in all of BREEN’s MEP projects, Des was promoted to Director of Building Systems in 2010.
OUR AIM IS TO FORM STRONG PARTNERSHIPS WITH CLIENTS BY ADDING VALUE, SHARING EXPERTISE AND DELIVERING WORLD-CLASS SERVICE TO EACH OF OUR CUSTOMERS, REGARDLESS OF PROJECT SIZE.”
DES MAHONY 

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Torrance Office

1983 West 190th Street, Suite 200
Torrance, CA 90504
T: 310.464.8404    F: 310.464.8408
  • About Us
    • Our Firm
    • Philosophy
    • News
  • Services
    • Civil
    • Structural
    • Building Systems >
      • Mechanical
      • Electrical
      • Plumbing
      • Fire Life Safety
    • Commissioning
  • PEOPLE
    • Staff
    • Department Leaders
    • Senior Management Team
  • Projects
    • Net Zero Design
    • Housing & Mixed Use >
      • Senior Living
      • Adaptive Reuse
      • Conventional
      • Affordable
      • Mixed Use
      • Net Zero Design
    • Educational Facilities >
      • k-12 Projects
    • Commercial >
      • Tenant Improvements
      • Retail
      • Hotels
      • Restaurants
    • Parks & Recreation
    • Federal & Government
    • Commissioning
  • Affiliations
    • Clients >
      • Architects & Designers
      • Developers & Contractors
      • Public & Private Institutions
    • Associations
  • Careers
  • Portal
    • Clients >
      • File Drop
    • Employees >
      • Customization
  • Contact Us