About Us

As an administrator of affordable housing for more than thirty years, Susan brings experience and a wealth of knowledge to Mainstay Supportive Housing and Home Care.

Throughout her career, Susan has served on and provided leadership to committees and organizations that focus on the needs of the underserved. Susan holds several professional designations, including SHCM, COS and PHM, and is a trained Mediator.

Susan and her staff of property managers, maintenance crew members and Resident Service Coordinators dedicate themselves to providing a safe haven for all they serve.

Larry is President and CEO of Mainstay Supportive Housing and Homecare, the Newton based non-profit organization. He has 25 years of experience in the fields of community development, affordable housing finance and non-profit administration. Earlier in his career Larry served in senior leadership positions at the Local Initiatives Support Corporation and the Corporation for Supportive Housing, two of the largest community development financial institutions in the United States. At both agencies he led major national initiatives aimed at solving the affordable housing crisis in low and moderate income communities across the country.

Ron Quimby joined Mainstay Supportive Housing & Home Care in November of 2015. He was hired as an Occupancy Specialist and immediately began learning everything he knows about housing from his supervisor and mentor, Susan Horner. He, and the rest of the Property Management team, work diligently to provide exemplary housing services to the many residents that Mainstay Supportive Housing & Home Care serves.

When Ron isn’t the Director of Housing Services, he is Dad to his daughter, Miranda and son, Joshua. He is husband to his beautiful and amazing wife, Krissy. And, he is Pop-Pop to the apple of his eye, his granddaughter, Adalyn.

During the summer months, Ron enjoys spending his time off with his family and friends at his home away from home, a seasonal campground in Plymouth, Massachusetts.