It looks like a popular Texas-based burger chain is planning an expansion into the Denver metro area.
William Tamminga of BurgerWorks Colorado LLC—the operator behind several Whataburger locations across the state—has submitted plans for a brand-new restaurant in Castle Rock.
The proposal would bring a 3,380-square-foot Whataburger to a vacant parcel at the Promenade at Castle Rock, just east of Promenade Parkway and Alpine Vista Circle. Plans outline a full buildout, including a concrete parking lot, drive aisles, sidewalks, signage, a trash enclosure, and fresh landscaping.
If approved, the project would mark a major milestone for the company. While Whataburger once operated a Thornton location in the late 1970s (now home to Jim’s Burger Haven), the brand didn’t return to Colorado until 2022 with a Colorado Springs opening, and expansion has largely remained south of the Denver metro area since.
Founded in 1950 as a small walk-up stand in Corpus Christi, Texas, Whataburger has grown into a fast-food heavyweight with nearly 1,200 locations across 17 states, according to the chain’s website. Today, Whataburger operates nine locations statewide, including outposts in Monument, Fountain, Pueblo, and six in Colorado Springs.
The eatery is celebrated for its large 100% beef burgers, served on five-inch toasted buns. The menu also features chicken sandwiches, salads, and classic sides like fries and onion rings. Fan-favorite orders include the Patty Melt and Honey BBQ Chicken Strip Sandwich, often paired with the brand’s cult-favorite Fancy Ketchup.
What Now Denver has reached out to BurgerWorks Colorado for additional details about the upcoming Castle Rock eatery and will share updates as they become available.
