Jeffery B. Kozero, PE

Founder and CEO

Jeffery B. Kozero is the Founder and CEO of 407 Associates. He earned his engineering degree from Pennsylvania State University and is a licensed Professional Engineer. Over the course of his career, Jeffery has built and led an architectural and engineering firm from a local presence in the DC-Maryland-Virginia region into a company with a national footprint. He has also founded and managed several real estate development companies delivering development, design, and construction services, overseeing projects that total more than 12 million square feet of construction and an estimated value exceeding $2.9 billion. Jeffery founded 407 Associates to bring design, development, and property management fully in-house, giving clients and investors a single, accountable partner from concept through completion.

Email: Jkozero@407mainstreet.com

Alexis R. Norman

Interim CFO

Alexis R. Norman serves as Interim CFO of 407 Associates and is the Founder and Principal of ANI Accounting Solutions. As a solo practitioner, she draws on more than 20 years of professional experience in finance and accounting and works alongside a trusted network of partners to serve her clients. Alexis is a graduate of Trinity University in Washington, DC, where she earned a bachelor’s degree in business administration before becoming a licensed certified public accountant (CPA) in Maryland, where she works and now resides. Her experience spans a wide range of industries, including construction, legal services, MedTech, nonprofit and public relations, giving her a broad, practical perspective on financial management.

Email: Alexis@407mainstreet.com

Elaine Hui

CAO

Elaine Hui is the Chief Administrative Officer at 407 Associates, bringing more than 20 years of experience in design, construction, and project management within the utility industry. She is widely respected for her expertise leading complex projects for the State Highway Administration (SHA) and county governments. Elaine specializes in enterprise-wide change management, having guided teams through major technology transitions including the implementation of GIS and AS8 systems. She holds a degree in Urban Planning and GIS from the University of Waterloo. She combines her spatial data expertise with a strong focus on utility construction design and exceptional customer service.

Email: Elaine@407mainstreet.com

JACK PORAT

Director of Construction

Jack Porat serves as Head of Construction at 407 Associates, bringing four decades of hands-on experience to the role. He entered the construction industry in 1985 as a painting contractor and transitioned into general contracting in 1992, building broad expertise across both commercial and residential projects along the way. As Director of Construction, Jack oversees 407 Associates’ full slate of commercial and residential work, working closely with subcontractors, project teams, and clients at every stage of a project — from initial planning through final walkthrough. His long tenure in the field gives him a practical, ground-level understanding of what it takes to deliver quality construction on time and on budget

Email: Jack@407mainstreet.com

Joseph A. Boggs

Director of Professional Services

Joseph A. Boggs is Director of Professional Services at 407 Associates. He holds an undergraduate degree from Virginia Tech and a Master of Architecture from the Harvard University Graduate School of Design. Joseph’s work has been the subject of lectures at several universities, and he has served as the G.T. Ward visiting professor at Virginia Polytechnic Institute and State University. He is a frequent presenter at American Institute of Architects (AIA) symposiums and community events, including a 2016 AIA Convention workshop on international practice. Joseph’s design work has earned numerous awards and been featured in national and international publications, and he was elected to the AIA College of Fellows in 1995. His recent projects include the Uriah P. Levy Center and Jewish Chapel, documented in the hardcover book “Honor.”

Maklin Vaquerano

Director of New Home Design & Construction

Maklin Vaquerano serves as Director of New Home Design & Construction at 407 Associates, bringing more than 20 years of experience in architecture, construction, and project management. He holds a bachelor’s degree in Architecture and a master’s degree in Financial Administration, with his academic credentials formally evaluated and recognized in the United States. Maklin leads the design and coordination of new residential projects, overseeing architectural planning, construction documentation, code compliance and permit approvals from concept through completion. His experience also extends to residential and commercial renovations, structural coordination and multidisciplinary collaboration with engineering teams. He works closely with clients, consultants and local jurisdictions to deliver design solutions that are innovative, practical and fully code-compliant.

Email: Maklin@407mainstreet.com

Dan Morrison

Director of Utility Services

Dan Morrison serves as Director of Utility Services at 407 Associates and has worked in the construction industry across the DC, Maryland, Pennsylvania, and Virginia region since graduating high school. In 2000, he founded a home building company that grew into one of the region’s most established firms. Following the 2008 economic downturn, Dan shifted focus and launched home inspection and construction management companies. In 2019, he started an underground utility installation company, partnering with clients such as the National Institutes of Health and BGE, along with numerous private developers. In 2022, Dan brought his company into the 407 Associates family, gaining access to the synergies offered by its development, design, and construction divisions.

Doug Dribben

Board of Advisors

Doug Dribben serves on the Board of Advisors at 407 Associates. He is a graduate of the United States Military Academy at West Point, where he earned a degree in civil engineering, and holds a master’s degree in engineering management from George Washington University and a law degree from the University of Missouri–Kansas City School of Law. During his military career, Doug was a licensed Professional Engineer and practicing attorney for the U.S. Army, managing operations and training for a 1,000-soldier Army engineer battalion and overseeing more than 250 concurrent projects valued at over $5 million annually. He also designed and supervised construction of 107 projects, ranging from $3 million to $20 million, carried out by a workforce of 940 soldiers. Doug retired from the Army and joined 407 Associates as a recent addition to the team.

John Roberts

Board of Advisors

John Roberts serves on the Board of Advisors at 407 Associates. He earned a Bachelor’s degree in Business Administration with an emphasis in Accounting from Pacific Union College, graduating with honors while serving as President of the Pre-Law Society, head of the Student Finance Committee, a four-term student senator, and finance chair of the Debate Society. John brings six years of internal audit experience, four years as president of a nonprofit organization, and three years of business taxation experience, along with VITA certification at all levels through the IRS. He has passed all four sections of the Uniform CPA Exam and the Ethics Exam, holds a Department of Defense Financial Manager certification, and specializes in small business accounting and fraud examination.

Robert Vricella

Board of Advisors

Robert Vricella joined the MainStreet Partners team in 2020 as a member of the Board. Mr. Vricella is an 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.

Justin I. Nwabuisi

Board of Advisors

Justin I. Nwabuisi is an accomplished businessman and seasoned diplomat with over three decades of expertise in strategic marketing, team leadership, and business development. Renowned for enhancing operational efficiency and forging impactful partnerships, Justin excels in navigating complex industry regulations and delivering measurable results. He has successfully led more than 110 projects valued at over $250 million, demonstrating exceptional proficiency in financial management and project oversight. Highly adaptable and collaborative, Justin is recognized for his innovative approach and ability to consistently achieve outstanding outcomes.