Prologis' Hamid Moghadam and Miami-Dade County Mayor Daniella Levine Cava with the warehouses sold at 3901 and 3975 Northwest 25th Street, and 3900Northwest 26 Street in Miami-Dade County (Google Maps, Prologis, Facebook/Daniella Levine Cava)

Miami-Dade County bought a 3.4-acre industrial site for $17 million that it plans to use as staging for improvements and expansion of the nearby international airport.

The county purchased the three lots at 3901 and 3975 Northwest 25th Street, as well as 3900 Northwest 26th Street in unincorporated Miami-Dade, from San Francisco-based Prologis, according to records and real estate database Vizzda. The site is east of Miami International Airport.

Miami-Dade commissioners voted 10-0 in favor of the purchase at their Dec. 3 meeting, including signing off on up to $120,000 of closing costs.

The property consists of four one-story and two-story warehouses spanning a combined 77,900 square feet, Vizzda records show. They were completed in 1956 and 1958.

Under the county’s agreement with Prologis, the firm has to demolish at its own cost the buildings by late July, according to a memo from Miami-Dade Mayor Daniella Levine Cava to commissioners. The last of the tenants were to move out by November.