[3][4] It is a subsidiary of Restaurant Brands International, which also owns the chains Burger King, Popeyes, and Tim Hortons.

Firehouse Subs has over 1,210 restaurants in 46 states, Puerto Rico, Switzerland, Mexico, Canada and soon the United Kingdom and the Middle East by 2025[5][1][6][7][8] and in Brazil in 2026.

[citation needed] In 2011, Firehouse Subs opened its first franchises in the U.S. territory of Puerto Rico, via local franchisee Caribbean Restaurants.

[20] On November 15, 2021, Burger King parent Restaurant Brands International announced that it would acquire Firehouse Subs for $1 billion.

[11] Each location features a custom mural, hand drawn and painted at the company's headquarters in Jacksonville, Florida.

Chris and Robin remain in charge of the menu, and work alongside their director of product development Jay Miller, who joined the company in 2017.