ServicesS.J. Cantwell Inc. is positioned at the top of demolition industry in New England, offering full-service demolition, earth work, soil remediation and abatement, mobile shearing and more. Our experienced crews are trained and put safety at the forefront of every job site. Whether you need demolition, hazard abatement, asset recovery, environmental services, or all the above, we offer true turnkey solutions for your most challenging projects.
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AboutOur workforce is made up of skilled equipment operators and versatile laborers specializing in both site work and demolition. Every year we demo over 250 thousand square feet of buildings and 1500+ linear feet of bridges. With over 15 excavators, skid steers, loaders, and bull dozers there is no project too big. We have the capabilities to specialize in deep utilities, mass excavation, large scale industrial and commercial, bridge and robotic demolition.
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Project Gallery
Hard work and craftsmanship are always at the forefront in helping achieve our goals.
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WOOD FRAMING
Specializing in large wood framed projects both panelized and traditional stick-built framing. |
CROSS LAMINATED TIMBER (CLT)
Expert level carpenters to install your CLT, offering acoustic installation, reducing noise pollution, and providing a nature fire-resistant property. |
FINISH CARPENTRY AND MILLWORK INSTALL
Installing high-end finish carpentry and millwork packages with precision. |
LIGHT GAUGE METAL FRAMING AND DRYWALL
Complete framing, hanging and finishing of drywall by skilled carpenters to align with the project plans and specifications. |
integrity is our compass
Commercial, industrial and institutional construction services.
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Demolition, dismantling, site contracting, abatement and soil remediation.
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Sign design, fabrication and installation.
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Lumber and building supplies.
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Development of vibrant residential communities, multi-use buildings, and
commercial establishments. |
Our suite of companies can take you from start to finish
S.J. Cantwell, Inc.
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North & South
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Portsmouth Sign CompanyWe specialize in a wide variety of signs to make your business stand out from the competition.
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Our suite of companies can take you from start to finish
S.J. CANTWELL, INC.
Demolition. Dismantling. Site contracting. Abatement and soil remediation. |
NORTH & SOUTH CONSTRUCTION SERVICES
We provide commercial, industrial and institutional construction services. |
PORTSMOUTH SIGN COMPANY
We specialize in a wide variety of signs to make your business stand out from the competition. |
EXETER
LUMBER, LLC We have everything you need - from moldings and millwork, to windows and doors. |
COMPASS
DEVELOPMENT We specialize in a wide variety of signs to make your business stand out from the competition. |
Our integrity is our compass
North & South view our business relationships as a partnership and not simply a contract. We strive to finish every project with a mutual level of trust, pride and satisfaction with our customer.
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Our suite of companies can take you from start to finish
S.J. Cantwell, Inc.
|
North & South
|
Portsmouth Sign CompanyWe specialize in a wide variety of signs to make your business stand out from the competition.
|
Our suite of companies can take you from start to finish
S.J. CANTWELL, INC.
Demolition. Dismantling. Site contracting. Abatement and soil remediation. |
NORTH & SOUTH CONSTRUCTION SERVICES
We provide commercial, industrial and institutional construction services. |
PORTSMOUTH SIGN COMPANY
We specialize in a wide variety of signs to make your business stand out from the competition. |
EXETER
LUMBER, LLC We have everything you need - from moldings and millwork, to windows and doors. |
COMPASS
DEVELOPMENT We specialize in a wide variety of signs to make your business stand out from the competition. |
Project Gallery
Our capabilities span the entire construction gamut. Check out some of our highlights below.
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Big Building with woodBig building made out of wood and stuff, and picked up by cranes.
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making angels singSome buttresses fly, and others use flying buttresses. These are neither.
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with manpower to spareMany hands make light work, even when the electricity isn't hooked up.
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are you my mother?Oh, you are not my mother! You're a snort! I have to get out of here!
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