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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. For these customers, Timberwolff has been responsible for new store rollouts, open store remodels, prototypes, big box stores, lean execution, among other specialty retail projects. As of July 1, 2014, Timberwolff Construction, Inc., became a Gray company.

Staffing Numbers

  • Project Planning1
  • Project Management17
  • Site Management26
  • 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
  • Tenant Improvements
  • Interior Fit-Up

How Gray Ranks in America

Gray has been recognized as one of the top engineering, architecture and construction firms in America as evidenced by our rankings in the major markets listed below.

  • 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