Business Details
Emergency
services
Trusted Heavy Construction Services in Shelton, CT
Since 1897, John J Brennan Construction has been a family-owned business delivering heavy construction expertise across Connecticut and the Northeast. Our five generations of leadership have built a reputation for integrity, innovation, and hands-on management in site development, demolition, utilities, and paving. With a union workforce and state-of-the-art equipment, we specialize in complex projects for municipal, utility, and private clients, prioritizing safety and sustainability.Recognized by Governor Ned Lamont for our 125th anniversary, we combine century-old craftsmanship with modern technology to meet evolving industry demands. Our clients return year after year due to our proven track record of on-time delivery, budget adherence, and exceptional quality. As a certified Small Business Enterprise, we remain committed to community development and environmental stewardship through material recycling and responsible construction practices.
Services
Site Development
Aggregates Supply
Demolition Services
Utility Installation
Onsite Crushing
Asphalt Paving
Material Recycling
Environmental Remediation
Rock Excavation
Concrete Placement
Highlights and features
- Family-owned for 128 years with five generations of construction expertise
- Certified Small Business Enterprise with state and federal certifications
- Union shop with agreements with Operating Engineers Local 478 and Laborers International Union
- 24/7 emergency repair services for critical infrastructure needs
- Recipient of multiple safety awards and industry recognitions
Associations and certifications
- State of Connecticut DAS Supplier Diversity Program
- CT DOT
- CT Major Contractor MCO.0900530
- CT Professional Engineering PEC.0001285
- CT Demolition Contractor DMCR.000417
What people say
Courteous and professional
Knowledgeable construction company
Excellent
Rare thing nowadays
Great job
Services
Site Development
Our full-service site development includes rock removal, shoring, paving, and environmental remediation. With union-certified crews and specialized equipment, we handle complex projects requiring precise grading, utility installation, and stormwater management. Clients benefit from our 128-year legacy of transforming raw land into functional infrastructure while maintaining strict safety and environmental standards.
Demolition Services
We provide comprehensive demolition services for buildings, foundations, and underground structures using state-of-the-art equipment. Our Connecticut Class A demolition license enables handling of complex projects with material recycling through onsite crushing. Safety-certified teams ensure efficient removal while minimizing environmental impact through material reuse and proper disposal protocols.
Utility Installation
Our utility division manages water mains, sewer systems, electric transmission, and gas pipelines across four states. With 10 specialized crews and 50 professionals, we offer end-to-end solutions from design to 24/7 emergency repairs. Clients include major utility providers who rely on our expertise in trenchless technologies and underground conduit installation for critical infrastructure projects.
Onsite Crushing
Our mobile crushing units process excavated materials directly at job sites, reducing transportation needs by up to 40%. This sustainable approach saves costs while providing high-quality recycled aggregates for road construction and fill materials. With equipment dating back to 1999, we've perfected material management techniques that minimize truck traffic and environmental disruption during large-scale projects.
Aggregates Supply
We produce and supply various aggregates including crushed stone, processed materials, and recycled concrete. Our Shelton facility offers 3/4" stone, 2" process, and 3 1/2" sub-base options with delivery services available. Clean fill acceptance and material credit programs support sustainable construction practices while maintaining strict quality control standards for both internal projects and retail customers.
People
Eric Brennan
Manager
Fourth-generation leader with over 25 years in construction management. Oversees daily operations and strategic direction while maintaining hands-on involvement in major projects. Committed to continuing family legacy of excellence and innovation in heavy construction.
Matthew Brennan
Manager
Fourth-generation executive focused on business development and client relations. Brings modern management approaches to traditional construction practices. Instrumental in expanding service offerings while maintaining core family values of integrity and customer satisfaction.
Ryan Brennan
Project Manager
Fifth-generation representative leading project execution. Combines generational knowledge with contemporary project management techniques. Specializes in complex site development and utility coordination while upholding company safety and quality standards.
Questions
What construction services do you offer?
We specialize in site development, demolition, utility installation, onsite crushing, and paving services for both public and private sector clients across the Northeast.
Are you certified as a minority-owned business?
Yes, we're certified as a Disabled/Small/Minority Business Enterprise by the State of Connecticut DAS Supplier Diversity Program since our founding in 1897.
Do you handle emergency utility repairs?
Yes, our utility division provides 24/7 emergency repair services for critical infrastructure needs across Connecticut and surrounding states.
What safety certifications do you hold?
We maintain CT Demolition Contractor DMCR.000417 certification and have received multiple safety awards for our industry-leading safety protocols and training programs.
Where do you operate?
While based in Shelton, CT, we serve clients throughout Connecticut, New York, Rhode Island, and Massachusetts for all our construction services.
Can you handle large-scale projects?
Yes, with $50M single and $100M aggregate bonding capacity, we're equipped to manage projects of any scale while maintaining our signature personal attention to detail.
