Berkshire Group’s $600 million Benjamin and VIA apartment towers are promoting condo-level services and finishes as lease-up continues at the 832-unit luxury complex in Boston’s Seaport District.

Penthouses on the Benjamin’s 17th through 22nd floors have private elevator service and access to Hello Alfred, a mobile app which enables residents to request services such as dry cleaning, grocery shopping and home cleaning by personal assistants.

The 22-story, 354-unit Benjamin is approximately 50 percent leased and 35 percent occupied, developers said. Move-ins began July 28 at the adjacent 20-story VIA, which is 18 percent leased and 2 percent occupied.

Berkshire Group is listing studios at the Benjamin from $2,860 a month and three-bedroom, two-bath units ranging up to $8,761. The two towers span 1.5 million square feet on a 3-acre parcel between Northern Avenue and Seaport Boulevard.

Equinox fitness club, L.L. Bean, Scorpion Bar & Restaurant and The Grand will anchor the Benjamin’s 120,000-square-foot retail podium. Resident-only amenities include the 12,000-square-foot Vista terrace and the 11,085-square-foot HoriZen pool and outdoor deck, which flank 8,000 square feet of indoor amenities space including a chef’s kitchen, espresso bar, fitness center and indoor lounges. Management is planning monthly events such as cooking demonstrations to activate the common spaces, said Monica Panglao, the Benjamin’s leasing director.

Future luxury rental competitors in the Seaport include Miami-based Crescent Heights’ 414-unit Residences At 399 Congress St. and Cottonwood Management’s $900 million Echelon complex, which will include 448 condos and 285 apartments.

Watch Leasing Director Monica Panglao give a tour of the Benjamin’s fourth-floor resident terrace.