With the New Year, comes a New Address. STEWART | SMITH is growing and has recently moved its Philadelphia headquarters to West Conshohocken, PA. Our new office is located in one of the premier office towers in suburban Philadelphia on the banks of the Schuylkill River, at 300 Four Falls Corporate Center, Suite 670, 300 Conshohocken State Rd., West Conshohocken, PA 19428.