CMJ Construction

Number 1 construction company in Long Island, NY

Welcome to CMJ Construction, the premier construction company serving Long Island, NY.

Build Your Dream

25 Years Of Undefeated Success

Our team is dedicated to ensuring that every project we work on is completed to the highest standard of quality. We take pride in our work and strive to exceed our clients’ expectations on every job.


Projects Successfully Completed


Years of Experience


Satisfied Customers

Commercial and Residential Solutions

Our Services

Interior / Exterior Painting

Whether you need a fresh coat of paint for your home or office, our painting services are tailored to meet your specific needs and preferences, with a focus on attention to detail and customer satisfaction.

Sign Structure / Concrete Garage / Sidewalks

From the installation of sign structures to the repair and construction of concrete sidewalks, our team of skilled professionals is committed to delivering high-quality results that meet your specific needs and exceed your expectations.

Power Washing

Our power washing service is designed to revitalize your property’s exterior, with a team of experts who use state-of-the-art equipment and eco-friendly cleaning solutions to remove dirt, grime, and stains, leaving your property looking like new.

Sheetrock Hanging / Taping / Spackle

Our sheetrock hanging and spackle service is designed to give your walls a smooth, seamless finish, with a team of skilled professionals who use high-quality materials and techniques to ensure a flawless result that will enhance the overall look and feel of your space.


Our electrical services are designed to provide safe and reliable solutions for your home or business, with a team of licensed and experienced professionals who can handle everything from minor repairs to complex installations, ensuring that your electrical system is functioning at its best.

Signs and Awnings Hanging / Vinyl Installation

Our sign and awning installation and vinyl installation services are tailored to meet your specific needs and preferences, with a team of skilled professionals who use the latest tools and techniques to deliver high-quality results that will enhance the overall look and functionality of your space.


Committed To Keep People Healthy & Safe

We are committed to sustainability and reducing our impact on the environment. We strive to use eco-friendly materials and practices whenever possible, and we are always looking for new ways to improve our sustainability efforts. Our goal is to create beautiful and functional spaces while minimizing our carbon footprint and contributing to a cleaner, healthier planet.

We Offer The Best Prices

In addition to our top-notch staff, we also offer the best prices in the Long Island, NY area. We understand that construction projects can be costly, which is why we work hard to keep our prices competitive without sacrificing quality

Our Latest Works

Science Lab Building

New York, USA

Long Gate Bridge

Malmo, SE

Enix Lawyer Building

Toronto, CA

Deep Sea Bridge

Athens, GR

Whar Our Clients Say


Engineering Manager

Alice Howard

I've worked with several construction companies in the past, but none have come close to the level of service and expertise provided by CMJ Construction. From the initial consultation to the final walkthrough, the team was professional, communicative, and committed to delivering exceptional results. I would recommend them to anyone looking for a reliable and trustworthy construction partner.

Interior Designer

Nathan Marshall

As an interior designer, I've worked with a lot of construction companies over the years, and I have to say, CMJ Construction is one of the best. They're always willing to collaborate and work closely with me to ensure that my designs are executed to perfection

Request a Quote

We take pride in providing exceptional customer service and believe that our clients should always feel comfortable working with us. Our team is approachable and always available to answer any questions you may have about your project.

Frequently Asked Questions

Yes, we do! We believe that every client deserves personalized attention and care, which is why we offer free consultations to help you determine the best course of action for your construction project. During your consultation, we’ll discuss your needs and goals, review any plans or specifications you may have, and provide you with an estimate of the costs and timeline associated with your project. Contact us today to schedule your free consultation.

We believe that quality workmanship is essential to the success of any construction project. That’s why we only hire the most qualified and experienced professionals to join our team. We also use high-quality materials and equipment to ensure that every project we work on meets our high standards for quality and durability. Additionally, we communicate regularly with our clients throughout the construction process to ensure that we’re meeting their expectations and addressing any concerns that may arise. Our commitment to quality workmanship is what sets us apart from the competition.

Yes, we do. At CMJ Construction, we are fully licensed and insured to provide construction services in Long Island, NY. We understand the importance of having proper insurance coverage to protect our clients, our employees, and our business in the event of any unforeseen accidents or incidents. Additionally, we maintain all necessary licenses and certifications to ensure that our work is performed in compliance with all applicable laws and regulations. We are happy to provide proof of insurance and licenses upon request, and we encourage our clients to verify our credentials before hiring us for their construction project.