Kathleen Horgan has joined MPM Properties LLC as property manager for the 19-story 100 Westminster St. tower, formerly the Bank of America building, and adjacent five-story bank building at 63 Westminster St. MPM recently signed a contract with the new owner of the buildings, New York City-based O'Connor Capital Partners, to manage the Class A office space. Horgan will have financial and operations responsibility for the buildings. She has more than 16 years of property management experience, most recently with Boston Properties, overseeing a portfolio of Class A office towers at The Prudential Center, Boston, for two years and suburban Boston properties for the previous four years. Prior to that, she was a project manager for Peter Elliot LLC, serving for more than a year on the Boston Redevelopment Authority's eminent domain acquisition of land for the Mass. Convention Center in South Boston. Earlier positions included one and one-half year stints each as an asset manager for Fleet Bank, Providence, and as a property manager for Trammell Crow, N.E., Inc., Providence. She worked for five years with Compass Management, Boston, as a facility manager for Digital Equipment Corp. and operations director for One Boston Place, and a year with The Codman Company, Boston, as a property services assistant. Horgan's professional affiliations include membership in the Building Owners and Managers Association and New England Women in Real Estate. MPM Property Management LLC, headquartered in Providence, is a multi-faceted commercial real estate firm serving the New England area. The company's areas of concentration are property management, construction services, parking facility management and real estate development.