Celebrating 100 Years

Rosendin celebrates shared success since 1919, highlighting its people-focused culture and growth in specialty services.


Rosendin is established in a garage in San Jose, California

From 8 to 7000

In 1938, Rosendin had eight employees. Today, we have more than 7000 nationwide.

Leaders for the Next 100 Years

In January 2020, Rosendin announced a new executive team.

“It’s incredible to look back on the hard work of the entire Rosendin team to see what has been achieved in the last 100 years. 2019 was a wonderful celebration of all of those achievements. We have an exciting future ahead of us and I look forward to the next 100 years and seeing all that we accomplish.”

Mike Greenawalt, CEO
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100 Years Strong

In 1919 Woodrow Wilson was President of the United States, the average house sold for under $4,000 and Moses Rosendin began Rosendin Electric Motor Works. The company serviced the Santa Clara/San Jose agricultural community by wiring homes and shops, rewinding motors for wells and pumps and extending pole line facilities for utility companies. The company expanded its business to Central California through the ’20’s, the Depression and World War II.

The end of World War II brought rapid commercial and industrial growth to the Santa Clara Valley and enormously expanded work for Rosendin. The company grew from eight employees in the late 30’s to ninety employees in the 1950’s. It was at this time, in 1953, that Rosendin Electric was incorporated as an Electrical Contractor in the State of California.

Explore Our Journey

New Executive Team Named


Rosendin announces the retirement of Tom Sorley, Larry Beltramo, and Jim Hawk and the appointment of new executive leadership. Mike Greenawalt is named CEO and Paolo Degrassi is named President with Matt Englert as Chief Operating Officer West, Keith Douglas as Chief Operating Officer East, and Justin Tinoco as Executive Vice President.

Bridges to Prosperity


Rosendin sends a team in partnership with Webcor Builders and Bridges to Prosperity to build a permanent footbridge in Rukurazo, Rwanda.

Hawaii Office


Though Rosendin has had a presence in Hawaii since the 1970s with the construction of Pearl Ridge Shopping Mall, Rosendin officially opens a Hawaii office location on O'ahu.

Mid-Atlantic Expansion


Rosendin opens an office in Maryland, stretching our Mid-Atlantic reach to include Maryland, Delaware, and Pennsylvania.
Later in the year, the North Carolina office opens to support the growing amount of work in the Carolinas.

Haitian Earthquake Relief


Rosendin rallies to help rebuild Haitian Sacred Heart Hospital following the 2010 earthquake in Haiti.

Texas Office


Rosendin completes acquisition of KST Electric, Ltd., a Texas-based electrical contractor. KST will later assume a new name as Rosendin Electric, effective 2014.

Virginia Office


A new data center project allows East Coast expansion. Rosendin opens an office in Virginia.

Larry Beltramo Named President


Larry Beltramo named President and Chief Operating Officer of Rosendin. Tom Sorley remains Chairman and Chief Executive Officer of the company.

Sacramento Office


First Sacramento Valley project for Rosendin Electric broke ground in 1977. Continued success in the area prompts opening of Sacramento office in California.

Las Vegas Office


Rosendin opens an office Las Vegas, NV. Four years later, in 2011, growth in the region requires expansion of regional office.

Employee Ownership


Employees complete the buyout of Rosendin making Rosendin fully employee-owned.

Jim Hawk Named Executive VP


Jim Hawk, P.E. appointed Executive Vice President of Rosendin Electric. Jim joined the Company in 1985 having served in the industry since 1977. Jim serves as the Executive overseeing the Company's Preconstruction Services.

Oregon Office


Rosendin opens the first office in the Pacific Northwest.

Arizona Office


The opening of Rosendin's office in Tempe allows for expansion into the Southwest.

Tom Sorley Named President


Tom Sorley is named President, succeeding Ray Rosendin.

Loma Prieta Earthquake


Rosendin Electric crews work to repair the San Francisco-Oakland Bay Bridge after the 6.9 magnitude Loma Prieta earthquake in the San Francisco Bay Area.

San Francisco Office


Rosendin opens an office in San Francisco in response to rapid Bay Area growth.

Rosendin Electric Celebrates 50 Years


Rosendin commemorates the 50th anniversary of its founding.

First multi-M Project


Rosendin is awarded its first multi-million dollar project: Lockheed Martin.

Sunol Street Office

1958 - 1964

Rosendin moves to a new location on Sunol Street in San Jose, CA.

First $1 million project


Rosendin wins its first $1 million project: Fresno State College.

Raymond & Louis Rosendin


Raymond and Louis Rosendin assume leadership of the company and Rosendin Electric is incorporated by the State of California.

Ray Rosendin Quote


"My father was extremely proud when his two young sons entered the business in 1950. The firm committed itself to hard work, building on its experience and sharpening its business acumen. Days had no hours as we spent whatever time was required to finish tasks…

There is no secret to success in our business. Many years ago, my father would tell me that to be successful one must have all resources – men, materials, and finances – in place before undertaking a project. We continue to adhere to this philosophy, which my father called a “law of nature.”

- Ray Rosendin

Growth during WWII

1940 - 1945

During World War II, Moses Rosendin expanded his business to accept contracts from the shipyards that sprang to life around the San Francisco Bay. The end of WWII brought rapid commercial and industrial growth to the Santa Clara Valley and enormously expanded work for Rosendin.

The company grew from eight employees in the late 30’s to ninety employees in the late 50’s.

Great Depression


Rosendin Electric Motor Works overcomes the Great Depression. Now with eight employees, the Park Avenue office in San Jose, CA is opened.

Rosendin Electric Motor Works


In 1919 Woodrow Wilson was President of the United States, the average house sold for under $4,000, and Moses Rosendin began Rosendin Electric Motor Works by wiring the first irrigation pumps in the vast, fruit-laden, “Valley of Heart’s Delight” (now known as Silicon Valley).

Rosendin Electric Motor Works
78 Race Street, San Jose, CA

State Licenses (By Office)

Office License(s)
Anaheim, CA 142881
Concord, CA 142881
Gallatin, TN 51692
Hillsboro, OR CCB#103939
Las Vegas, NV 011435
Los Angeles (West), CA 142881
Phoenix, AZ (BIM Office) ROC034937R-11
Prineville, OR CCB#103939
Sacramento, CA 142881
San Francisco, CA 142881
San Jose, CA (Corp HQ) 142881
San Jose, CA (Finance & Engineering) 142881
Tempe, AZ ROC034937R-11
Texas TECL20807