BOSTON—Boston Senior Home Care Inc. has renewed and expanded its existing lease at The NonProfit Center at 89 South St. here.

Beginning on Oct. 1, Boston Senior Home Care will occupy 21,619 square feet on the entire fifth floor and the majority of the eighth floor of the office building, according to developer Third Sector New England's commercial real estate advisor, Newmark Grubb Knight Frank. The tenant currently occupies a total of 20,246 square feet through a second floor sublease and two leases for space on the seventh floor and the full fifth floor with the landlord.

The new lease transaction has a term of 11 years. Boston Senior Home Care reworked its current lease and terminated another lease and sublease at the property. Ted Wheatley of JLL represented Boston Senior Home Care in the transaction.

"This new transaction simplifies what was a complex lease scenario and gets the tenant into more efficient space," says NGKF Managing Director Jeremy Roy. "This outcome furthers the landlord's mission for the center to foster social and economic change by providing a state-of-the-art, cost-effective and collaborative work environment for non-profit organizations in an urban locale next to a variety of public transportation options."

Built in 1899 as the cornerstone of Boston's Leather District, The NonProfit Center is a historic landmark and underwent a LEED-certified restoration by Third Sector New England. The NonProfit Center, in is 10th year of operation, is home to 36 social change nonprofits and is located a block from the South Station transportation center, near downtown Boston, the Massachusetts State House, and Boston City Hall.