Why Lake Ronkonkoma Homeowners Trust D&J Construction
Who We Are
A Team Committed to Excellence
Built on Honest Work
D&J Construction was founded by Dennis Barrera over 11 years ago right here on Long Island. The idea was simple — show up, do the job right, and treat every client's home like it matters. No shortcuts, no overselling. That mindset built a reputation across Lake Ronkonkoma and the surrounding areas that no advertising budget could buy. Word of mouth carried this business because the work consistently delivered what was promised. That has not changed since day one.
One Crew, Full Service
Most homeowners dread the process of hiring multiple contractors for one project. D&J was built to eliminate that problem. From carpentry and drywall to kitchen remodels and power washing, one crew handles the full scope of work. That means fewer scheduling conflicts, clearer communication, and a finished product that is consistent from start to finish. Homeowners across Nassau and Suffolk County keep coming back because working with D&J is straightforward — and the results hold up long after the job is done.
Our Track Record
Numbers That Speak for Themselves
11+
Years
In Business
800+
Major Projects
Completed
2500+
Happy
Customers
20+
Cities
Serving
Our Team
Your Dedicated Home Experts
Dennis Barrera
Owner & General Contractor
Dennis has been in the construction trade for over 11 years and personally oversees every project D&J takes on. He manages the work on-site, handles client communication directly, and holds the crew to a standard that reflects what he has built this company on. When you work with D&J, you are working with Dennis — not a middleman.
Our Services in New York
Everything Your Home Needs — One Crew, One Call
Carpentry Services
Good carpentry holds a home together — literally and visually. Whether it is custom trim, structural repairs, door framing, or built-in work, D&J handles it with precision. Every cut is measured carefully and every finish is done cleanly. Sloppy carpentry shows, and that is never the standard here.
Door Installation & Replacement
A door that sticks, drafts, or simply looks worn down affects your whole home. D&J installs and replaces interior and exterior doors properly — level, sealed, and functioning the way they should. It is a small upgrade that makes a noticeable difference every single day.
Window Installation & Replacement
Old windows are one of the biggest sources of energy loss in a home. D&J installs replacement windows that fit right and seal tight. Proper installation means fewer drafts, lower bills, and a cleaner look from inside and out.
Drywall & Sheetrock Installation
Whether you are finishing a new room or patching damage from water or impact, D&J handles drywall and sheetrock from hanging to taping to a smooth, paint-ready finish. The result is a clean wall that looks like nothing ever happened.
Interior & Exterior Painting
Paint is one of the fastest ways to change how a space looks and feels. D&J preps surfaces properly before ever opening a can — no shortcuts. Interior or exterior, the finish comes out smooth, even, and built to hold up against Long Island weather.
Bathroom Remodeling
A bathroom remodel done right adds real value to your home. D&J handles the full process — tile, fixtures, drywall, painting, and finish work — so you are not coordinating five different contractors. The goal is a bathroom that works better, looks cleaner, and holds up long-term.
Kitchen Remodeling
Your kitchen gets more use than any room in the house. D&J remodels kitchens with that in mind — smart layouts, solid craftsmanship, and materials that can handle daily life. From cabinet work to tile and paint, everything gets done with attention to detail.
Interior Finish Work & Trim
Finish work is where a home goes from construction site to move-in ready. D&J installs trim, molding, and detail work that ties a room together. It is the kind of work most people do not notice when it is done right — and cannot stop noticing when it is done wrong.
Basement Finishing & Renovation
An unfinished basement is wasted square footage. D&J can turn it into a livable space — whether that is a family room, home office, or extra bedroom. Framing, drywall, flooring, and paint all handled by one crew who knows how to work with below-grade spaces.
Deck Building & Construction
A well-built deck extends your living space outdoors and adds real value to your property. D&J builds decks that are structurally sound, properly anchored, and built with materials that hold up through Long Island winters. No shortcuts on framing or footings.
Tile Installation
Tile work done poorly stands out immediately. D&J installs tile in bathrooms, kitchens, and floors with precise cuts, level lines, and clean grout joints. The prep work is done right the first time so tiles do not crack, shift, or loosen over time.
Power Washing Services
Years of dirt, mold, and grime build up on driveways, siding, and walkways without most homeowners noticing. D&J's power washing clears it all fast. It is one of the most cost-effective ways to improve how your property looks — inside of an afternoon.
Leaky walls? Outdated kitchen? Basement collecting dust?
Get a Reliable Contractor in Lake Ronkonkoma Who Actually Gets the Job Done
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Our Simple 3-Step Service Process
1
You Reach Out, We Listen
The process starts with a simple call or message. Dennis takes the time to hear exactly what you need before making any recommendations. There is no pressure, no upselling, and no vague estimates. You explain what is going on with your home, and D&J gives you a straight answer on what the work involves, what it will take, and what to expect before anything gets scheduled.
2
We Plan It Right
Once the scope of work is clear, D&J puts together a plan that fits your home, your timeline, and your budget. Every project is different, and the planning phase is where problems get caught before they become expensive. Dennis looks at the full picture — materials, sequence of work, potential complications — so that when the crew shows up, the project moves forward without unnecessary delays or surprises halfway through.
3
We Get It Done
When work starts, D&J stays on it until completion. The job site is kept clean, the work is done to a consistent standard, and Dennis remains available throughout the entire process. Once the project wraps up, the space is left clean and ready to use. No loose ends, no unfinished details. The goal every time is a homeowner who looks at the finished work and has nothing to complain about.
Ready to get started?
Frequently Asked Questions
Got Questions? We’ve Got Answers!
Do you serve both Nassau and Suffolk County?
Yes, D&J Construction works throughout both Nassau and Suffolk County. This includes Lake Ronkonkoma, Hauppauge, Bay Shore, Smithtown, Brentwood, Huntington, Patchogue, Hempstead, Hicksville, and more. If you are on Long Island and need a reliable contractor, reach out and we will confirm your area.
How long has D&J Construction been in business?
D&J Construction has been operating for over 11 years. Dennis Barrera founded the company and has been running it hands-on since day one. That experience shows in the quality of the work and the consistency of results across hundreds of projects throughout Long Island.
Can D&J handle a full kitchen or bathroom remodel from start to finish?
Yes, D&J manages the full remodel process including tile, drywall, painting, fixtures, and finish work. You do not need to hire separate contractors for each trade. Having one crew handle the entire project keeps communication simple and the finished product consistent from one end of the room to the other.
Do you do smaller jobs or only big remodels?
D&J takes on both small repairs and large renovation projects. Whether it is a single door replacement in Mineola or a full basement finishing job in Bohemia, the same level of care applies. No job gets treated as too small to do right.
What is included in your carpentry services?
Carpentry at D&J covers a wide range — trim work, molding, built-ins, structural repairs, and custom woodwork. If it involves cutting, fitting, and finishing wood in your home, it falls under what D&J handles. The work is measured twice and built to last, not rushed through.
Are you available for urgent or after-hours work?
D&J Construction is available 24/7. If something comes up that needs immediate attention, you can call (855) 594-4857 at any time. Living in Ronkonkoma and serving all of Long Island means D&J is never far when something needs to get handled quickly.
How does your tile installation process work?
D&J starts every tile job with proper surface prep, because that is what separates a tile floor that lasts from one that cracks in two years. Once the surface is ready, tiles are laid with precision — straight lines, consistent spacing, and clean grout work throughout. The goal is a finished product that looks sharp and holds up through daily use.
Can you power wash my driveway and house siding?
Yes, power washing is one of D&J's services for both residential driveways and exterior siding. It removes built-up dirt, mold, algae, and staining that accumulates over time, especially in Long Island's humid summers. Most jobs can be completed in a single visit and the difference in curb appeal is immediate.
Quality Craftsmanship You Can Always Count On
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