The commercial construction industry in Connecticut serves as a critical foundation for economic growth and infrastructure development. It includes a range of companies that focus on building and renovating facilities for various sectors, including healthcare, education, and retail. These firms employ skilled professionals, leverage innovative technologies, and prioritize safety and sustainability. As demand for environmentally responsible practices grows, many companies are incorporating green building standards into their projects, signaling a shift towards more sustainable construction solutions. With a robust pipeline of projects on the horizon, the industry is poised for continued stability and expansion in the coming years.


This list features 21 commercial construction companies across Connecticut, varying in size from small teams to firms with hundreds of employees. Founded between 1916 and 2010, these businesses specialize in areas such as design/build, general contracting, and construction management. They operate in varied locales, from Brooklyn to New London and are recognized for their work in critical sectors like healthcare and education. Each company maintains a strong focus on quality, project efficiency, and client satisfaction, demonstrating a long-standing commitment to excellence in construction.


Continue reading to explore the top commercial construction companies in Connecticut.


Top 21 Commercial Construction Companies in Connecticut


1. Signature Construction Group, Inc.


Signature Construction Group, Inc. is a privately owned construction firm based in Brooklyn, Connecticut, with additional offices in Norwalk and Hartford, Connecticut. Established in 1990, the company specializes in general contracting and green building practices. They offer a comprehensive suite of services, including pre-construction, construction, and post-construction services, primarily targeting commercial, educational, and medical projects. Signature Construction is recognized for its commitment to quality and efficiency, employing a knowledgeable team of professionals, including LEED-certified staff, to ensure high standards in project execution. The firm has garnered several awards, such as the Southern CT Building Owners and Managers Association (BOMA) TOBY award and recognition from the Bronx Building Awards, reflecting their dedication to excellence in construction. Their client portfolio includes a mix of public and private entities, showcasing their ability to handle a variety of project types and sizes.


2. KBE Building Corporation

  • Website: kbebuilding.com
  • Ownership type: Private
  • Headquarters: Farmington, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 95%, Russia 2%, India 2%
  • Founded year: 1959
  • Headcount: 51-200
  • LinkedIn: kbe-building-corporation

KBE Building Corporation, based in Farmington, Connecticut, is a commercial construction firm that has been active since 1959. The company specializes in a variety of sectors, including education, healthcare, hospitality, and retail. KBE prides itself on its relationship-driven approach, which emphasizes collaboration and communication with clients, design partners, and subcontractors. With over 170 construction professionals, KBE has managed to maintain a significant annual construction volume of over $400 million. The firm has built a strong portfolio, completing projects worth billions across different sectors, including $1.1 billion in senior living and $1.6 billion in K-12 education projects. KBE has also received numerous industry awards, highlighting its commitment to quality and safety. The company operates in multiple states, showcasing its ability to handle projects across various regions. KBE's focus on safety is evident through its recognition for exemplary safety performance and its partnerships with OSHA, reinforcing its dedication to maintaining safe job sites.


3. Nosal Builders, Inc.

  • Website: nosalbuilders.com
  • Ownership type: Private
  • Headquarters: Cheshire, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1994
  • Headcount: 11-50
  • LinkedIn: nosal-builders

Nosal Builders, Inc. is a construction firm based in Cheshire, Connecticut, specializing in construction management, general contracting, and design/build services. Since its inception in 1994, the company has focused on delivering customized construction solutions to a variety of sectors, including municipal, healthcare, and education. With a team of 33 skilled professionals, Nosal Builders prides itself on its commitment to quality, safety, and client satisfaction. The firm has successfully completed numerous projects, showcasing its ability to handle complex construction tasks while maintaining a strong focus on client relationships. Nosal Builders is recognized as a pre-qualified contractor for the State of Connecticut Department of Administrative Services and the Department of Transportation, highlighting its credibility in the industry. The company has also received accolades for its safety management practices, including the prestigious Platinum Safety Award from the Associated Builders and Contractors Connecticut Chapter. This recognition reflects their dedication to maintaining high safety standards on all projects.


4. The Morganti Group, Inc

  • Website: morganti.com
  • Ownership type: Private
  • Headquarters: Danbury, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 45%, United Arab Emirates 32%, Saudi Arabia 13%, Other 10%
  • Founded year: 1916
  • Headcount: 51-200
  • LinkedIn: morganti-group-inc

The Morganti Group, Inc., based in Danbury, Connecticut, is a construction company that has been active since 1916. Initially focused on small masonry projects, Morganti has evolved into a firm that offers comprehensive construction management, general contracting, and design/build services. They cater to a variety of sectors, including healthcare, education, and infrastructure, ensuring that projects are completed efficiently and safely. With a workforce of approximately 320 employees, Morganti has successfully completed over 600 projects, reflecting their extensive experience in the field. Their commitment to safety is evident in their rigorous training programs and adherence to industry standards. The company operates not only in the U.S. but also in international markets, including the United Arab Emirates and Saudi Arabia, which highlights their capability to manage projects on a global scale. Morganti's focus on building long-lasting relationships with clients and their dedication to quality construction practices position them as a significant player in the commercial construction industry.


5. Enterprise Builders, Inc.

  • Website: enterbuilders.com
  • Ownership type: Private
  • Headquarters: Newington, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1984
  • Headcount: 11-50
  • LinkedIn: enterprise-builders-inc

Enterprise Builders, Inc. is a construction management firm based in Newington, Connecticut, established in 1984. With a workforce of 11 to 50 employees, the company specializes in commercial, industrial, and institutional construction projects, managing projects valued up to $50 million. Their services include construction management, general contracting, design-build, facility audits, and independent cost estimating. Enterprise Builders has built a reputation for delivering quality construction solutions efficiently, focusing on client satisfaction and effective communication throughout the project lifecycle. They have worked with notable clients such as Wesleyan University and Saint Francis Hospital, showcasing their capability in handling significant projects. The firm has received multiple awards for excellence in construction, reflecting their commitment to high standards and successful project delivery. Their community involvement, including a mentoring program for aspiring construction professionals, highlights their dedication to fostering growth within the industry.


6. Petra Construction Corporation


Petra Construction Corporation, based in North Haven, Connecticut, has been a significant player in the construction industry since its inception in 1953. Founded by Guido Petraiuolo, the company has evolved from its roots in residential and light commercial construction to a robust provider of construction management, general contracting, and design-build services. With a workforce of approximately 95 employees, Petra Construction focuses on delivering high-quality projects across various sectors, including commercial, education, healthcare, and specialized construction. Their approach emphasizes effective communication and collaboration, ensuring that client needs are met efficiently. The company has also been recognized for its commitment to safety, receiving multiple awards for excellence in construction safety and health. Petra Construction's portfolio showcases a range of successful projects, reflecting their capability and experience in the industry.


7. Mattern Construction, Inc.

  • Website: matternconstruction.com
  • Ownership type: Private
  • Headquarters: Sprague, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1987
  • Headcount: 11-50
  • LinkedIn: mattern-construction

Mattern Construction, Inc., founded in 1987 by George Mattern, is a construction firm based in Baltic, Connecticut. The company specializes in various services, including design build, construction management, general contracting, and real estate development. Over the years, Mattern Construction has built a reputation for delivering high-quality projects tailored to the specific needs of their clients. Their team consists of seasoned professionals with extensive experience in the construction industry, some of whom have been with the company since its inception. This stability contributes to their ability to manage projects effectively and maintain strong relationships with clients. Mattern Construction is dedicated to safety, with all field employees being OSHA certified and receiving ongoing training. Their mission emphasizes integrity, respect, and professionalism, ensuring that they meet and exceed client expectations in every project they undertake.


8. Claris Construction


Claris Construction, also known as Claris Design Build, is a commercial construction and architecture firm based in Newtown, Connecticut. Established in 1991, the company has grown from humble beginnings into a respected player in the construction industry. Claris specializes in a range of services including design-build, project management, and site evaluation, catering to various sectors such as automotive, education, healthcare, and more. Their collaborative approach ensures that client visions are realized through quality construction. Claris has expanded its operations to multiple locations, including Hartford, Charlotte, and Salt Lake City, indicating a strategic growth trajectory. The firm prides itself on its safety record and has received recognition for its innovative construction solutions. With a dedicated team of professionals, Claris continues to deliver projects that meet the evolving needs of its clients.


9. Bartlett Brainard Eacott, INC.

  • Website: bbeinc.com
  • Ownership type: Family Owned
  • Headquarters: Bloomfield, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1921
  • Headcount: 51-200
  • LinkedIn: bartlett-brainard-eacott-inc-

Bartlett Brainard Eacott, INC. (BBE) is a family-owned construction company based in Bloomfield, Connecticut, founded in 1921. With a workforce of approximately 32 employees, BBE specializes in comprehensive construction services tailored to various sectors, including education, healthcare, and community projects. The firm prides itself on delivering complex projects with a strong emphasis on quality and customer satisfaction. Over the years, BBE has built a reputation for handling challenging projects effectively, showcasing their expertise in construction management and execution. They have been recognized for their contributions to the industry, including being ranked among the Top 400 Contractors in the United States by Engineering News Record. BBE is also actively involved in community initiatives, partnering with organizations like Habitat for Humanity, which reflects their commitment to social responsibility. Their extensive portfolio includes projects in K-12 education, healthcare facilities, and civic buildings, highlighting their versatility and capability in the commercial construction sector.


10. PAC Group, LLC

  • Website: pacgroupllc.com
  • Ownership type: Family Owned
  • Headquarters: Torrington, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1996
  • Headcount: 11-50
  • LinkedIn: pac-group-llc

PAC Group, LLC, based in Torrington, Connecticut, has been a player in the construction industry since its founding in 1996. This family-owned business employs between 11 and 50 people and focuses on providing integrated construction services, including construction management, general contracting, and design-build. The company serves a range of clients, particularly in the educational and healthcare sectors, which are critical areas for commercial construction. Their project portfolio features a variety of completed works, from academic institutions to healthcare facilities, indicating their capability to handle different types of commercial projects. PAC Group emphasizes building strong client relationships and delivering quality construction solutions tailored to specific needs, which has contributed to their reputation in the Northeast United States.


11. LaRosa Building Group, LLC

  • Website: larosabg.com
  • Ownership type: Private
  • Headquarters: Meriden, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1979
  • Headcount: 11-50
  • LinkedIn: larosa-building-group-llc

LaRosa Building Group, LLC, based in Meriden, Connecticut, has been a significant player in the construction industry since its founding in 1979. The company specializes in a wide array of projects, including academic facilities, historic rehabilitation, military constructions, and commercial developments. With a workforce of 41 employees, LaRosa Building Group has completed over 500 projects, establishing a strong reputation for quality and safety. They serve a variety of clients, including educational institutions, government agencies, and private developers, providing comprehensive construction management and design-build services. The firm is committed to sustainability, actively implementing practices that reduce environmental impact and promote energy efficiency. Their extensive experience in handling projects that require adherence to strict safety and quality standards further solidifies their position in the commercial construction sector.


12. JLN Contracting

  • Website: jlncontracting.com
  • Ownership type: Private
  • Headquarters: Cromwell, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2010
  • Headcount: 11-50
  • LinkedIn: jln-contracting

JLN Contracting, based in Cromwell, Connecticut, is a commercial construction firm that has been operational since 2010. Founded by Jack Neubieser, the company aims to provide exceptional service and quality in construction projects across various sectors, including industrial, financial, medical, and retail. With a team of experienced professionals, JLN Contracting offers services such as site selection assistance, preconstruction budgeting, and general contracting. They have expanded their reach with a second office in New Hampshire, allowing them to serve clients throughout New England. Their portfolio includes a variety of projects, demonstrating their expertise and commitment to delivering quality construction solutions. JLN Contracting emphasizes a collaborative approach, ensuring that client visions are realized through effective planning and execution.


13. O,R&L Construction Corporation


O,R&L Construction Corporation, based in Branford, Connecticut, is a private construction firm that has been operational since 1990. The company specializes in commercial construction services, providing a comprehensive suite of offerings that include construction management, design-build, general contracting, and consulting. O,R&L has built a reputation for its work in various sectors, particularly healthcare facilities, educational institutions, and corporate entities. Their projects often involve complex requirements, and they are known for their ability to deliver high-quality results on time and within budget. The firm is also committed to sustainable building practices, actively promoting energy efficiency and environmental responsibility through its projects. With a team of experienced professionals, O,R&L Construction has successfully managed numerous projects, earning accolades for their innovative approaches and dedication to client satisfaction. Their focus on sustainability is further underscored by their membership in the United States Green Building Council and the presence of LEED-accredited professionals on staff. This commitment positions them well in a market increasingly driven by environmental considerations.


14. NDC Commercial Construction


NDC Commercial Construction, based in Plainville, Connecticut, is a private construction firm specializing in commercial construction services. Established in 2008, the company has built a solid reputation for its expertise in general contracting and construction management. NDC serves a variety of sectors, including healthcare, education, retail, and non-profit organizations. The firm prides itself on its commitment to integrity, reliability, and quality, ensuring that projects are completed on time and within budget. NDC employs a team-oriented approach, leveraging strategic relationships to enhance project delivery. The company is also recognized for its strong safety protocols and has received certifications that underscore its commitment to quality and compliance. NDC's portfolio includes notable clients and projects, reflecting its capability to handle a range of construction challenges effectively.


15. Bismark Construction Co., Inc


Bismark Construction Co., Inc, based in Milford, Connecticut, has been a significant player in the construction industry since its founding in 1982. This family-owned company specializes in a wide array of construction services, including construction management, general contracting, and design-build. Bismark serves various sectors, notably healthcare, education, and municipal projects, focusing on building and renovating facilities to meet modern standards. Their expertise extends to specialized areas such as mold and air quality management, EV charging station installations, and safety and security enhancements. With a workforce of 51-200 employees, Bismark Construction emphasizes quality and client-specific solutions, ensuring that each project aligns with the unique needs of their customers. Their long-standing history and commitment to the construction industry underscore their relevance and capability in the commercial construction space.


16. Babbidge Construction Company

  • Website: babbidge.com
  • Ownership type: Private
  • Headquarters: New Haven, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1992
  • Headcount: 11-50
  • LinkedIn: babbidge-construction-company

Babbidge Construction Company, based in New Haven, Connecticut, is a private construction firm established in 1992. The company specializes in construction management and general contracting services, primarily serving private institutions and commercial clients throughout Connecticut. With a workforce of 28 employees, Babbidge focuses on complex projects that demand detailed planning and execution. Their operational philosophy emphasizes quality, safety, and sustainability, which is increasingly important in today's construction environment. Babbidge has successfully completed numerous projects across various sectors, including academic institutions, healthcare facilities, cultural centers, and corporate spaces. Their commitment to client satisfaction is evident, as 85% of their work comes from repeat clients, highlighting their ability to foster long-term relationships. The firm also prioritizes environmentally responsible practices, having achieved several LEED certifications for their projects. This dedication to sustainability and quality positions Babbidge Construction Company as a significant player in the commercial construction industry.


17. Richards Corporation

  • Website: richardscorp.com
  • Ownership type: Private
  • Headquarters: Plymouth, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1967
  • Headcount: 51-200
  • LinkedIn: richards-corporation

Richards Corporation, founded in 1967, is a construction firm based in Plymouth, Connecticut. The company specializes in vertical construction, concrete work, site work, and road work. With a workforce of approximately 125 employees, Richards Corporation manages complex construction projects across Connecticut, Massachusetts, New York, and Vermont. Their client base includes businesses, educational institutions, and various community projects. The company has a strong focus on safety, employing a dedicated Safety Director and maintaining an impressive safety record. They have completed projects ranging from small-scale developments to significant institutional buildings, showcasing their capability to handle diverse project sizes. Their commitment to training and employee retention further enhances their operational effectiveness, making them a notable player in the commercial construction sector.


18. Carlin Construction Company, LLC


Carlin Construction Company, LLC, based in New London, Connecticut, has been a player in the construction industry since its inception in 1995. The company specializes in general contracting, construction management, and design-build services, catering to a variety of clients, including businesses, educational institutions, and healthcare facilities. With a team of 18 employees, Carlin Construction prides itself on its commitment to transparency and efficiency, ensuring that each project is tailored to meet the specific needs of its clients. The company has successfully completed over 50 design/build projects, with project sizes ranging from modest renovations of $50,000 to large-scale public facilities exceeding $15 million. Their extensive experience across sectors such as corporate, healthcare, and government highlights their adaptability and expertise in delivering high-performance facilities. Carlin Construction also holds a bonding capacity of $50 million, allowing them to undertake significant projects while maintaining financial stability. The leadership team, consisting of brothers John and Dan Carlin, brings decades of industry experience, having been involved in construction since their early careers. Their hands-on approach ensures that they are actively engaged in every project, fostering a culture of collaboration and accountability.


19. Banton Construction Company

  • Website: bantonconstruction.com
  • Ownership type: Family Owned
  • Headquarters: North Haven, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1979
  • Headcount: 51-200
  • LinkedIn: banton-construction-co

Banton Construction Company, based in North Haven, Connecticut, has been a significant player in the construction industry since its founding in 1979. This family-owned business specializes in general contracting and electrical services, serving a wide range of clients, including businesses and government entities. Banton is known for its strong emphasis on safety and quality control, ensuring that all projects meet high standards. The company operates across various sectors, including transportation, education, and public spaces, showcasing its capability to handle complex projects. With a bonding capacity of $200 million, Banton demonstrates financial stability, which is crucial for undertaking large-scale contracts. Their commitment to community involvement is reflected in their fundraising efforts and support for local initiatives, further solidifying their reputation in the industry.


20. Downes Construction Company

  • Website: downesco.com
  • Ownership type: Family Owned
  • Headquarters: New Britain, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1934
  • Headcount: 51-200
  • LinkedIn: downes-construction-company-llc

Downes Construction Company, LLC, based in New Britain, Connecticut, has been a significant player in the construction industry since its founding in 1934. This family-owned firm specializes in general contracting and project management, providing a range of services that include preconstruction, construction management, and design-build solutions. They cater to various sectors, notably educational institutions, healthcare facilities, and municipal projects. Over the years, Downes has built a reputation for delivering high-quality construction services, evidenced by their involvement in notable projects such as the renovation of the Blackstone Library and the expansion of the Mattatuck Museum. Their commitment to community engagement is reflected in their support for local initiatives and their employee stock ownership plan, which fosters a culture of investment in their projects. As they approach their 90th anniversary, Downes Construction continues to prioritize client satisfaction and project excellence, making them a noteworthy entity in the commercial construction field.


21. Brd Builders, LLC

  • Website: brdbuilders.com
  • Ownership type: Private
  • Headquarters: Hartford, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2000
  • Headcount: 11-50
  • LinkedIn: brd-builders-llc

Brd Builders, LLC, based in Hartford, Connecticut, has been a player in the construction industry since its inception in 2000. The company specializes in general contracting, construction management, and design-build services, catering to various sectors including education, healthcare, and retail. With a team of dedicated professionals, Brd Builders employs advanced technology for project management, ensuring that projects are completed on time and within budget. Their services extend beyond construction to include feasibility assessments, budgeting, and disaster restoration, showcasing their comprehensive approach to client needs. The firm is recognized for its commitment to quality and community involvement, actively supporting local charities. With a bonding capacity of $60 million, Brd Builders has the resources necessary to handle a wide range of projects, from new constructions to renovations and restorations.



Commercial Construction Insights: Key Companies in Connecticut


CompanyHeadquarterSizeFoundedOwnership
Signature Construction Group, Inc.Brooklyn, Connecticut, United States (USA)11-501990Private
KBE Building CorporationFarmington, Connecticut, United States (USA)51-2001959Private
Nosal Builders, Inc.Cheshire, Connecticut, United States (USA)11-501994Private
The Morganti Group, IncDanbury, Connecticut, United States (USA)51-2001916Private
Enterprise Builders, Inc.Newington, Connecticut, United States (USA)11-501984Private
Petra Construction CorporationNorth Haven, Connecticut, United States (USA)51-2001953Private
Mattern Construction, Inc.Sprague, Connecticut, United States (USA)11-501987Private
Claris ConstructionNewtown, Connecticut, United States (USA)11-501991Private
Bartlett Brainard Eacott, INC.Bloomfield, Connecticut, United States (USA)51-2001921Family Owned
PAC Group, LLCTorrington, Connecticut, United States (USA)11-501996Family Owned
LaRosa Building Group, LLCMeriden, Connecticut, United States (USA)11-501979Private
JLN ContractingCromwell, Connecticut, United States (USA)11-502010Private
O,R&L Construction CorporationBranford, Connecticut, United States (USA)11-501990Private
NDC Commercial ConstructionPlainville, Connecticut, United States (USA)11-502008Private
Bismark Construction Co., IncMilford, Connecticut, United States (USA)51-2001982Family Owned
Babbidge Construction CompanyNew Haven, Connecticut, United States (USA)11-501992Private
Richards CorporationPlymouth, Connecticut, United States (USA)51-2001967Private
Carlin Construction Company, LLCNew London, Connecticut, United States (USA)11-501995Private
Banton Construction CompanyNorth Haven, Connecticut, United States (USA)51-2001979Family Owned
Downes Construction CompanyNew Britain, Connecticut, United States (USA)51-2001934Family Owned
Brd Builders, LLCHartford, Connecticut, United States (USA)11-502000Private


Want to Find More Commercial Construction Companies?

If you want to find more companies that offer construction management, general contracting, and design-build services you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.

With Inven you'll also get to know the company's:

  • Detailed Ownership: Who owns the company? Is it a public or private company? What is the ownership structure?
  • Contact data: Who are the founders and CEO's? What are their emails and phone numbers?
  • Financials: How do these companies perform financially? What are their revenues and profit margins?

...and a lot more!