DIRTT ENVIRONMENTAL SOLUTIONS LTD

Our principal executive offices are located in Calgary, Alberta, where we lease approximately 73,000 square feet of office and manufacturing space. Our lease expires in September 2030. Our principal manufacturing facilities are currently located in Calgary, Alberta; and Savannah, Georgia.

Our wall surfaces (which we call panels), casework and timber solutions are manufactured in Calgary, while aluminum, glass and power components are manufactured in Calgary and Savannah. In Calgary, we lease an aggregate of approximately 400,000 square feet of manufacturing space across four facilities (excluding our principal offices), which leases expire in January 2029, January 2030, September 2027, and January 2034. In Savannah, we lease approximately 81,000 square feet of manufacturing space, which lease expires in February 2029.

On February 22, 2022, we announced our intention to close the Phoenix manufacturing facility and DXC. In Phoenix, we lease approximately 130,000 square feet of manufacturing space across two facilities, which leases expire in March 2027 (the “Phoenix Facility”). As at December 31, 2025, we subleased 71,855 square feet and are pursuing options to sublease the remaining premises.

In October 2019, we entered into a fifteen-year lease for a panel factory of approximately 130,000 square feet in Rock Hill, South Carolina. We decided to permanently close this facility in September 2025. On December 30, 2025, we entered an early termination agreement and ended the lease arrangement at the Rock Hill Facility.

In March 2020, we entered into an eight-year lease, which DIRTT may extend an additional five years at its option, of approximately 18,000 square feet of space for a DXC in Plano, Texas. During March 2023, we entered into an agreement to sublease our DXC in Plano to one of our Construction Partners in that region, from April 1, 2023, through October 31, 2028. In May 2025, we entered into a five-year lease of approximately 10,000 square feet in Houston, Texas, which we plan to use as a DXC.

In Chicago, Illinois, we own approximately 6,200 square feet of office space, which we use to operate a DXC.

Through distributed manufacturing, we can shift production of some components among our manufacturing sites, reduce transportation times and costs, and meet targeted lead times. We believe that our current and planned facilities are adequate for our current needs and that suitable additional or substitute space would be available if needed.