Mark J. Duclos, SIOR
Mark J. Duclos, SIOR
President, Sentry Commercial
Mark Duclos is the co-founder and President of Sentry Commercial, a Hartford-based commercial real estate services company. Established in 1991, Sentry Commercial has grown from a brokerage firm into a full-service organization offering brokerage, property management, construction management, and project management services.
With nearly 40 years of experience in the commercial real estate industry, Mark began his career with Griffin Land before joining The Farley Company, where he specialized in representing industrial companies and developing strategic real estate solutions.
A respected leader in the industry, Mark served as Global President of the Society of Industrial and Office Realtors (SIOR), one of the world’s leading commercial real estate organizations. He remains actively involved in numerous professional and community organizations and currently serves on the boards of the Community Investment Corporation, American International College, the Boy Scouts of America Connecticut Rivers Council, and the SIOR Foundation.
- Griffin Land: 1985
- The Farley Company: 1986 & 1989-1991
- Hart Corporation: 1987
- Sentry Commercial: 1991
- Consulting
- Corporate Services
- Tenant & Buyer Representation
- Sales
- Leasing
- Brokerage & Advisory Services
- Property Management
- Construction Management
American International College, B.S., Springfield, MA
- Elected to American International Board of Trustees (2021)
- Society of Industrial and Office Realtors:
– Board of Directors of SIOR Global
– President SIOR Global (2 years) - Fellow Royal Institution of Chartered Surveyors’ (FRICS) (2019-2022)
- Licensed real estate broker in Connecticut and Massachusetts
- REFA Member, Past President
- Hartford Foundation for Public Giving
- REFA
- SIOR – What is an SIOR?
- Fellow Royal Institution of Chartered Surveyors’ (FRICS)
- South Windsor Girls Lacrosse
- CT Chapter US Lacrosse
- It’s All About the Kids