Industrial giant Caterpillar has started the multimillion-dollar expansion of its global headquarters in Irving, state records show.
A filing with the Texas Department of Licensing and Regulation last week shows that Caterpillar plans to renovate an office property at 901 W. Walnut Hill Lane. The site is less than 3 miles from its current headquarters at The Towers at Williams Square and is meant to give the company more space as it grows in North Texas.
Caterpillar is expected to spend $36 million to renovate portions of the building. The project’s first phase covers 107,000 square feet of the larger campus. Work was scheduled to begin earlier this week and is expected to finish by August 2027. Gensler is the project’s architect. State filings refer to the work as “Project Stone.”
Caterpillar did not immediately return requests for comment about the expansion. Details in TDLR are preliminary and subject to change without notice.
The company purchased the Walnut Hill Lane campus late last year from Coppell-based office furniture and equipment firm Vari. The campus was once the headquarters of jewelry retailer Zales. The additional building will provide more workspace and a place to host dealers, customers and visitors, Caterpillar previously said.
Built in 1982, the three-building former Zales complex in Las Colinas contains more than 400,000 square feet of office space. The property also includes a four-level parking garage.
At one time, the office building housed almost 3,000 workers, according to previous Dallas Morning News reporting.
Caterpillar moved its global headquarters from Deerfield, Ill., to Dallas-Fort Worth in 2022.
The Fortune 500 company has over 800 employees at Williams Square and roughly 6,600 statewide. The firm has had a presence in Texas since the 1960s.
Caterpillar reported $67.6 billion in sales and revenues in 2025. It is the world’s leading manufacturer of construction and mining equipment, off-highway diesel and natural gas engines, industrial gas turbines and diesel-electric locomotives. The company ranked 64 on this year’s Fortune 500 list.
