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50+ Years
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Your Trusted Northeast Construction Partner
Since 1973, All State Construction has established itself as a leading specialty construction contractor in the Northeast. As a family-run business with three generations of experience, we specialize in general, mechanical, and civil projects for private, municipal, and government sectors. Our commitment to quality craftsmanship is reflected in our self-performance of 80% of projects, utilization of certified professionals, and adherence to industry-leading safety and quality standards.

With a 10,000-square-foot fabrication facility and advanced BIM technology, we deliver solutions ranging from boiler installations to underground utility systems. Our recognition as a top 500 specialty contractor by Engineering News Record underscores our reputation for reliability and innovation in serving clients across eight Northeastern states.
Services
Boiler Contractors General Contractor Mechanical Contractor BIM 3D Modeling Mobile Boiler Rental Site Work Underground Pipe Contractor Underground Utilities
Details
  • Year established: 1973
Highlights and features
  • 50 years of specialized expertise in mechanical construction
  • Self-perform 80% of all construction projects
  • Family-run business with three generations of leadership
  • Certified ASME Section IX welders and licensed professionals
  • Industry leader in pipe & steel fabrication in the Northeast
Associations and certifications
  • American Society of Mechanical Engineers
  • National Board of Boiler & Pressure Vessel Inspectors
  • Engineering News Record Top 500 Specialty Contractors
Services
Boiler Contractors
We provide comprehensive boiler solutions including installation, removal, and replacement of industrial and commercial boiler systems. Our National Board-certified technicians handle associated piping and equipment with ASME Code compliance. With R Stamp #247 certification, we perform repairs and alterations on boilers and pressure vessels while maintaining strict safety protocols. Our expertise covers retubing, leak repairs, and system upgrades for both steam and hot water applications.
Mechanical Contractor
As a leading mechanical contractor in CT, we specialize in heating, cooling, and process piping systems. Our services include HVAC installations, chillers, cooling towers, and underground piping networks. We handle projects from initial design through installation, with capabilities in power generation and automated temperature controls. Our team maintains 'U', 'S', 'H', and 'R' stamps for code-compliant mechanical systems in commercial and industrial facilities.
Underground Utilities
We install and maintain direct-buried piping systems for steam, chilled water, and utilities across the Northeast. Our capabilities include double-wall piping, concrete utility tunnels, and power distribution systems. With experience in hundreds of miles of underground infrastructure, we provide solutions for new installations, replacements, and emergency repairs while minimizing surface disruption through advanced trenchless technologies.
BIM 3D Modeling
Our BIM team utilizes Revit, Navisworks, and Trimble X7 Scanner technology for precision construction planning. We create 3D models with +/- 1/4" accuracy to coordinate complex projects and identify conflicts before construction. This technology enables overlay of digital models on real-world conditions, improving project coordination and reducing field errors through detailed pre-construction visualization.
Mobile Boiler Rental
We offer rental boilers ranging from 40HP to 200HP with dual-fuel capabilities for emergency and peak demand situations. Our fleet includes self-contained units with operating certificates for immediate deployment. Services include 24-hour delivery, installation, and support for temporary boiler needs during system maintenance or facility upgrades. Units meet FM and NFPA 85 electrical control requirements for safe, reliable operation.
Questions
What construction services do you offer?
We provide mechanical contracting, boiler installation/removal, underground utilities, BIM modeling, site work, and mobile boiler rentals across the Northeast.
Which states do you serve?
We operate throughout Connecticut, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, and Vermont.
Are you certified for boiler repairs?
Yes, we hold the National Board R Stamp #247 and ASME Section IX certifications for boiler and pressure vessel repairs.
Can you handle emergency boiler needs?
Yes, we offer emergency boiler rentals with 24-hour delivery and installation capabilities for urgent situations.
What makes you different from other contractors?
We combine 50 years of family-owned expertise with advanced BIM technology and a 10,000-square-foot fabrication facility to deliver comprehensive solutions.
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