Law firm Eckert Seamans Cherin & Mellott, LLC is expanding its space and extending its lease at W&M Properties' Ten Bank St., according to Jeffrey Newman, executive vice president of W&M Properties, the marketing and managing agent for the building. The firm initially took occupancy of a 2,835 s/f space on the 10th floor. The expansion provides an additional 2,388 s/f, raising total occupancy to 5,223 s/f. In addition, the lease term was extended through 2013. W&M Construction will build out the expanded space for the new tenant. Newman and senior leasing associate Kim Zaccagnino represented the landlord in this transaction. The tenant represented itself.