Mystic -- The Stonington Planning and Zoning Commission will hold a public hearing Tuesday night on a regulation amendment that could pave the way for construction of a potential $60 million medical, research and residential campus on 70 acres of the Perkins Farm property off Jerry Browne Road.

The hearing is to begin at 7:30 p.m. at Mystic Middle School. 

Developer David Lattizori of Groton, who has a permit to build 36 homes on the site, is seeking to create a floating zone known as the Greenway Development District.

The new district, which is limited to the GBR-130, RR-80 and RA-40 residential zones, requires a project to be a minimum of 50 acres in size and preserve 50 percent of the site for open space.

Lattizori has said the development would cluster development along Interstate 95 and not be seen from Jerry Browne Road. It would leave the wooded area and meadow that front Jerry Browne Road from Coogan Boulevard to Pequotsepos Road intact.

Residents of the Stone Ridge retirement community located across Jerry Browne Road from the site have opposed previous commercial proposals for the property but have had numerous meetings with Lattizori about the new plan. Stone Ridge officials are expected to make their position known at the hearing.