For over 30 years, we’ve been delivering high-quality construction and fuel system solutions across Northern New England. Our commitment to safety and precision ensures every project is built to last.
Our roots trace back to 1992 with the founding of B&G Construction by Arnie Brown and Jack Greig. Following the addition of Mark Winslow in 1993, the growing demand for high-quality excavation services led to the formal incorporation of MarWin Construction in 1995.
As a family owned and operated business, we have spent decades focusing on quality workmanship, strong partnerships, and project management with our customers’ needs at the forefront.
Effective January 2025, Stefan Winslow became the new owner of MarWin Construction Incorporated. He has been a key contributor since 2011 and brings deep expertise in construction management and industry-specific technology.
Since 1995, MarWin Construction has maintained a diverse portfolio in both commercial and residential projects and continues to deliver high standards of quality.
We ensure engineering accuracy in every project, from excavation to final structural completion.
We build trust through transparent communication, fair pricing, and reliable construction services.
Your project goals are our priority, delivering tailored solutions on time and within budget.
Let’s talk about how MarWin Construction can deliver results for your next commercial or residential project.