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Timberwolff Construction, Inc.

A Gray Company

1659 W. Arrow Route
Upland, CA 91786


Contact Info

Phone : (909) 949-0380
Fax : (909) 949-8500

General Contact

Mike Wolff President, Timberwolff Construction, Inc., A Gray Company

Media Contact

Jill Wilson Vice President, Communications & Marketing (859) 281-5000

Our People

Since 1989, Timberwolff has been an established leader in retail construction completing more than a thousand stores for customers such as Nike, H&M, Converse and Verizon Wireless. As of July 1, 2014, Timberwolff Construction, Inc., became a Gray company.

Staffing Numbers

  • Project Planning1
  • Project Management13
  • Site Management29
  • Operations Admin4

About This Office

Timberwolff brings a variety of contracting services to Gray as well as the latest communication technologies available to enhance customer experiences. Its core market is:


  • Construction Management
  • LEED® Certification
  • Equipment Installation
  • Renovation
  • Concrete Construction
  • Carpentry
  • Interior Fit-Up
  • Self-performed Site Work

How Gray Ranks in America

  • 8th
    The Top Contractors in Manufacturing Plant Construction
  • 5th
    The Top Contractors in Automotive Plant Construction
  • 10th
    The Top Contractors in Food & Beverage Plant Construction
  • 14th
    The Top Contractors in Distribution Center Construction
  • The Top Contractors in Hospitality Construction
    The Top Contractors in Hospitality Construction
  • 2nd
    The Top Contractors in Retail Tenant Improvements
  • 21st
    The Top Contractors in Retail Construction
  • 26th
    The Top Contractors in Industrial Process
  • 10th
    The Top Contractors in Chemical Plant Construction
  • 30th
    The Top 100 Design-Build Firms
  • 89th
    The Top 400 Contractors
  • 46th
    The Giants 300 Contractors