About Us

MainStreet 407 Glazing specializes in the design and installation of glass and cladding components for commercial and residential projects.

Our principals and management average over 30 years of knowledge and deep experience in design and construction of projects in the residential, retail, hospitality, food service and industrial sectors.

No project is too large or too small for MainStreet 407 Glazing. Our principals have designed and/or built commercial properties as small as a Starbucks Coffee shop and as large as a one million square foot warehouse, and they provide the same level of management and customer care regardless of the project’s size.

The company is a wholly owned subsidiary of 407 Associates, LLC, which provides through our other subsidiaries home improvement and restoration, custom home building, commercial and residential construction, and design and engineering services. The family of 407 Associates’ companies allows for the sharing of design and construction professionals for projects which require a wide range of services, and offers greater material and subcontractor buying power, with cost savings passed on to our customers.

Over the course of more than 30 years, the principals of the MainStreet407 Companies have provided design, construction management, general contractor and subcontractor services for residential and commercial properties and projects throughout the Mid-Atlantic region.


Jeff Kozero, PE
Founder and CEO

Jeff graduated from the Pennsylvania State University with an engineering degree and is a licensed Professional Engineer. Over the course of his career, Jeff  has started and grown an architectural/engineering firm from a local DMV presence to a National Footprint. In addition, Jeff has started and managed various real estate development companies that have provided development, design and construction related services. These projects resulted in over 12 million constructed square feet and valued at over $2.9Billion. Jeff has now created 407 Associates to become a complete design/development/management company.

Karl Griffin
Director of Design

Karl A. Griffin has over 10 years of experience in the architecture and design industry. With a passion for creativity and a strong eye for detail, Karl has successfully led numerous design projects, ranging from residential to commercial buildings, with a focus on innovation, sustainability, and functionality. He holds a Bachelor of Architecture degree from The University of the District of Columbia and has continued to expand his knowledge and skills through various professional development programs and workshops. He is a member of several professional organizations, including AIA, NCARB and NOMA. Karl is dedicated to helping the company achieve its vision of becoming the leading provider of innovative and sustainable design solutions.

Dana Lecompte
President of Main Street Glazing Glass Company

Dana LeCompte is an accomplished project management professional with over 40 years’ experience in estimating and project supervision. He started his career in 1979 with Robert L Walsh where he worked as a supervisor with a staff strength of over 25 employees per site. In 1996 Dana began his own company named ‘Monumental Glass’. Monumental Glass catered to scheduling, estimating, material procurement, installation, and site supervision of windows and glass. He did not limit his expertise to just his own company, he extended his tentacles across other organizations as a certified project manager. He worked with reputable companies such as GAMA, MGA, Accent Metal Services, Revolution Windows System, and many other organizations between the years 2003 and 2022 before joining MainStreet 407 Glazing. He has brought over four decades of extensive experience and expertise in the glass industry to our company. These achievements have earned him the position of President of MainStreet 407 Glazing.

Brenda Duckett

Brenda Duckett has vast experience in the Finance and Managerial Sector. Brenda started her career as a Mortgage Customer Service personnel with Equifax, rising quickly to supervisor within 6 months of her assumption of duty and exiting the company as VP of Operations. She was the CEO of two startup companies, serving contractors and small businesses with office administration, accounting service, and permit processing.  Brenda has been a manager for the past 33 years, outlining her success as the Director of Finance and overseeing the Administrative offices for 407 Associates, LLC. She can be described as the engine room of our organization.