What's Green?

O'Neil Construction has the experience to manage all phases of green design and building.

Green and Sustainable Building

W. E. O’Neil is committed to promoting sustainable building and development practices. Our eighty (80) full-time LEED Accredited Professionals, have participated in over 4 million SF of LEED projects. In addition, we have assisted Owners with green building programs on dozens of buildings that have not pursued LEED credit. Sharing best -practices with Owner's, Designers, and our project teams we continually support building environmentally conscious facilities and sustainable construction.

Customer's building programs supported by LEED best practice enhances our ability to deliver these goals:

  • reduced operating costs
  • conservation of natural resources
  • optimized equipment life-cycle
  • enhanced occupant comfort and health
  • increased productivity
  • improved air and water quality
  • reduced waste

As a steward of sustainable building practices, W. E. O’Neil provides building owners and operators the experience necessary to improve your building's performance. Below is just a sampling of our Gold, Silver and Certified LEED projects:


LEED Gold  

    • BRE Park Viridian Apartments    
    • Columbia College Media Production Center
    • Haworth Permanent Showroom at the Merchandise Mart
    • MTA Transportation Building 
    • Ladera Ranch #555
    • Northrop Grumman M4 High Bay

LEED Silver

    • DePaul LP New Theatre School
    • Gadsen Mercado Retail
    • OZ Architecture - 29th Street Studio Tenant Improvements
    • Tohono O'odham Nation San Xavier Office
    • Ladera Ranch MOB #333
    • Cal Poly Pomona Residential Suites, Phase II
    • Downtown Women's Center, Los Angeles
    • Port of Long Beach, Pier G. Maintenance & Repair Building
    • West Hollywood Library

LEED Certified

    • UCMC New Hospital Pavilion
    • Marriott Courtyard - SRPMIC
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