About Us

MainStreet 407 Partners designs, develops, builds, owns, and manages commercial projects throughout the Continental United States.

MainStreet 407 Partners is part of a family of companies providing full in-house design, construction, construction management and building and property maintenance and management services for all of the properties in our portfolio. Our connection with our “sister” companies enables us to maintain tight control over our design, engineering and construction costs as well as our construction and completion timetables. Through our “sister” merchant banking company, MainStreet 407 Partners can provide funding and financing for our projects, either via self-funding or through our sister company’s extensive investor contacts.

Each property/project purchased and owned by MainStreet 407 Partners as either a commercial enterprise, a build for sale or rental project or a land development property or redevelopment project is placed into a separate SPE (special purpose entity). The affiliated MainStreet companies help to bring the property/project all of the way from purchase to certificate of occupancy and then sale or lease with cost savings at all points resulting from MainStreet Partners’ ability to perform all required services in-house.

MainStreet 407 Partners’ approach maximizes opportunities for investors and partners and mitigates any potential risks across the MainStreet Partners’ multiple companies and projects.

Principals and Board of Advisors

Each principal of MainStreet 407 Partners has over 30 years of experience in his or her particular field or fields of expertise that ties into the development, construction, operation, financing, ownership and operation of commercial real estate. Our team consists of engineers, designers, architects, developers, builders, real estate attorneys and property managers. The MainStreet 407 Partners team’s experience is deeply routed in the design and construction of major commercial /  residential properties throughout the Continental United States, with extensive completed projects in the senior care, faith community, hospitality, food service, retail shopping center and industrial sectors.

Our Board of Advisors is comprised of members possessing expertise in the healthcare, non-profit, education, funding and faith-based institution arenas.

President and Principal

Over the course of his more than 40-year career, Mr. Kozero has started and managed companies that have provided development, design and construction-related services for residential and commercial real estate projects totaling more than 10 million constructed square feet, and which are collectively valued at an estimated $2.5 billion.


Board of Advisors and President of the National Children’s Guild Fund

Stephen brings to the MainStreet Partners over 40 years experience as a senior financial leader with broad industry experience, including roles in healthcare, education, manufacturing, distribution, food processing, and not-for-profit organizations. Steve possesses strong written and verbal communication skills, with a proven ability to connect with and motivate team members.


Board of Advisors and Consultant

Gary Kellner offers a unique set of gifts to MainStreet Partners that few other consultants can bring to the table. Kellner has had a rich and multifaceted 40-year career that includes experience in the parish, politics, administration of higher education, public relations, and institutional fundraising.


Board of Advisors and Consultant

Wayne Trotman recently joined the MainStreet Partners team in 2020 as a member of the Board. He is a highly sought after, results-driven global financial leader who has consistently driven revenue and profit growth, turned around dysfunctional businesses and spearheaded startups to growth and success for diverse industry leaders, including JPMorgan Chase, Merrill Lynch, Fleet Boston and SEPTA. Leveraged solid finance, banking and FinTech background with experience as a member of corporate and charitable boards. Mr. Trotman is a certified, Moody’s independent Corporate Finance Instructor, Managing Partner Trotman Capital Advisors, former President for JPMorgan’s Commercial middle market, Mid-Atlantic business and a Registered FINRA Securities Professional (Series 24, 7, 63). Mr. Trotman brings a wealth of financial knowledge to MainStreetPartners team!


Board of Advisors and Consultant

Robert Vricella recently joined the MainStreet Partners team in 2020 as a member of the Board. Mr. Vricella is a independent Real Estate professional in the Washington D.C. suburbs. For the past 15 years, he has developed and invested in a diverse portfolio of properties. Prior to becoming independent, Mr. Vricella was in charge of real estate acquisitions for Toll Brothers for southern Maryland. Mr. Vricella brings a wealth of real estate knowledge to the MainStreet Partners team.