A massing model shows an iteration of the Gateway Innovation Center Design proposed in 2020. Courtesy Image

The master developer of Somerville’s Union Square has paid $200 million for a cluster of industrial parcels that have been eyed for a 1.5 million-square-foot life science and hotel project.

The parcels are located at the corner of McGrath Highway across from the Target-anchored shopping center on Somerville Avenue.

Another developer, Capital Hall Partners, submitted plans to state environmental officials in 2020 for a development called Gateway Innovation Center including two 377- and 297-foot-tall life science buildings and a 254-foot-tall hotel, all served by a 1,000-space underground garage.

The parcels include the FW Russell and Son disposal services company, equipment storage and the Hub Glass Services building.

US McGrath Owner LLC, an affiliate of Union Square Station Associates, acquired the parcels on June 3 from Gateway QOZB LLC, which lists Boston-based Spaulding & Slye Investments as manager. The parcels include 120, 160, 200 and 216 McGrath Highway.

The firm, which was not immediately available for comment, broke ground last summer on a 450-unit apartment tower and 194,000-square-foot office-lab building at 10-50 Prospect St. The 4-acre site is the first phase of its 2.4 million-square-foot mixed-use project in the city’s Union Square redevelopment zone, spanning 15 acres near the new Union Square station on the MBTA’s Green Line Extension.