Established in 1983, Mas-Con Corporation has been proudly serving New Hampshire, Maine, Massachusetts and Vermont as one of New Hampshire’s largest commercial masonry and concrete foundations subcontractor. Our rich portfolio shows our commitment to superior craftsmanship showcased by a wide variety of projects including industrial facilities, healthcare facilities, government facilities, educational facilities, retail locations, and residential complexes.

As a family-run business, we have built our reputation on dedicated hard work, on time performance and quality workmanship in the safest environment. Our skilled onsite workers and professional office staff are our greatest assets; they are highly skilled and experienced, and many have been with the company for over 20 years. With 60 full-time year-round employees, our employees earn competitive wages and great benefits; while continuously receiving up-to-date OSHA safety training.

For over 34 years, we have developed many relationships with New Hampshire’s largest General Contractors, as well as many large firms throughout New England. Based in Central New Hampshire, we have on-going relationships with many architects and engineers throughout NH and New England; many of whom reach out to us for our guidance and expertise. We are committed to our customers while bringing the same passion, attention to detail and commitment to every project.

With a bond capacity of $10 million, we have the ability to handle any size project with any degree of complexity. We continuously deliver finely crafted commercial masonry and concrete work for all large-scale construction and small, customized projects. We are a fully insured subcontractor and proud member of the Associated Builders and Contractors group since our establishment. Through the ABC we have developed strong relationships while remaining competitive and keeping our employees up-to-date with education and trainings.


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Andrew J. Bartlett

Owner, President, Project Manager and Estimator, Professional Engineer (Retired Status)

Stephen C. Bartlett

Owner, Head Mason Foreman

David J. Bartlett

Owner, Vice President, Project Manager and Estimator, AIA (Retired Status)

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Kevin Brewer

Project Manager and Estimator

Lydia Bartlett

Project Manager and Estimator, Safety Director

Matthew C. Bartlett

Project Manager and Estimator, AIA

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Deborah Brewer

Office Manager

Tammy Calley



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Dartmouth Life Science Building
Dartmouth College
The Elliot
Manchester, New Hampshire
Hartman Union Building
Plymouth State College
Gregg Hall
University of New Hampshire
Fulton Hall
Gordon College
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Whittemore Center
University of New Hampshire
Huot Technical Center
Laconia, New Hampshire
Memorial Union Building
University of New Hampshire
Mascoma Valley Regional High
Cannan, New Hampshire
Lindsay Center for Mathematics and Science
St Paul's School
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Pette Hall
University of New Hampshire
Pilalas Center for Math and Science
New Hampton School
Tuck Living and Learning Center
Dartmouth College
St Mary's Bank
Manchester, New Hampshire
Prospect Mountain High
Alton, New Hampshire


Hamilton Smith Hall, University of New Hampshire
In Conjunction with Skanska USA Building INC.

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