CHICAGO-Harrison, New York-based Senior Care Development LLC has agreed to buy the Clare at Water Tower, a senior housing project situated in the Gold Coast, for over $86 million.

NEW YORK CITY-Paper Source has signed its second Manhattan deal in a month.

SUNNYVALE, CA-OptiMedica Corp., a global ophthalmic company, is expanding its headquarters in Sunnyvale.

PLANO, TX-Plano Data has expanded its space to 116,376 square feet at Plano Business Park situated near the junction of Plano Parkway and Shiloh Road in Plano.

BALTIMORE-St. John Properties Inc. has bought a five-story office building at 3700 Koppers St. in Southwest Baltimore and it plans to execute an $8-million renovation there.

FORT LAUDERDALE, FL-Hudson Construction Co.'s St. Augustine office has gained a $14.3-million contract to construct a Walmart Supercenter measuring 157,628 square feet in North Lauderdale.

NEW YORK CITY-Goldstein Hill & West Architects has signed a lease for 10 years with Bowling Green Associates for 8,500 square feet of space at 11 Broadway.

CAMBRIDGE, MA-Nine tenants have inked lease deals totaling 100,000 square feet of space at 125 & 150 CambridgePark Drive in Cambridge.