Who We Are
Forty years of continuous field operation
The company has run without interruption since 1985 under the same ownership and field leadership. The work has stayed consistent through both names: self-performed concrete, sitework and building trades, largely on secure and occupied government facilities.
The Company
A trusted agent to its customers since 1985
WNY Maintenance Group, Inc. is a nationwide construction services company based in Western New York, with many local projects in New York, New Jersey, and Pennsylvania, known as a leading builder in diverse market segments. The company has earned recognition for undertaking large and complex projects, serving as a trusted agent to its customers, embracing emerging technologies, and making a difference by doing better than satisfactory work, with respect for its employees and dedication to the local community.
1985 — 2014
M&H Construction Co., Inc.
29 years of concrete, sitework and general construction, building the federal and institutional client base the firm still serves.
2014 — Present
W.N.Y. Maintenance Group, Inc.
Same ownership, same crews, broader scope. Multi-trade renovation programs, roofing, asphalt and restoration alongside the core concrete work.

At a Glance
The facts a bid package asks for
Prequalification details, ready for your vendor file. EIN and insurance certificates are provided on request.
- Legal entity
- W.N.Y. Maintenance Group, Inc. — New York S-corporation
- Typical contract
- $300,000 – $500,000, with completed projects in the $1M – $3M range and capacity to scale
- Labor
- Union affiliated; supplemented by long-standing subcontract partners
- Wage compliance
- Davis-Bacon and New York State prevailing wage projects, with certified payroll reporting
- Geography
- Western New York base; performed statewide — Buffalo, Rochester, the North Country, Long Island and New York City
Leadership
Owner on the job
Bart or Vince are the points of contact from bid through closeout. No layer between your project manager and the person who commits the crews.

Bart Mazzariello
Owner & Managing Partner
Bart's credentials span over 30 years of progressive construction management experience. Across large-scale residential and commercial projects he has become known as a problem-solver. He and his team have continued to serve their customers by completing projects on time and to each client's approval.

Vincent Kaufmann
Owner & Partner
Vincent Kaufmann is the founder and principal of a finishing and restoration contracting firm with 47 years in the construction industry, serving markets in Denver, New York, and Southwest Florida. Born September 25, 1958, he was educated at Stella Niagara Military Academy in Lewiston, New York, and Bishop Timon High School in Buffalo, before attending Regis University in Denver, Colorado. He completed a union apprenticeship through Local 79 in Denver, where he launched his first business and later expanded operations to New York and, ultimately, Sarasota, Florida. His firm specializes in high-end finishes for multi-story waterfront high-rise properties along the Gulf Coast from Naples to Tampa, as well as large-scale hurricane restoration. That work has included managing crews of several hundred tradesmen across roofing, drywall, and structural rebuilds, with a peak in-house staff of 85 employees. Kaufmann has also extended his work internationally through humanitarian projects in Rwanda, where his efforts have focused on building churches, securing access to fresh water, and establishing working farms.
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