D&J Construction — Lake Ronkonkoma's Trusted Hands for Over 11 Years
Long Island's Reliable General Contractor for Every Job at Home
Let Our Team Earn Your Trust
Let Our Team Earn Your Trust
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.
DISCOVER WHAT OUR CUSTOMERS HAVE TO SAY ABOUT US
REVIEWS
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⭐⭐⭐⭐⭐
Who We Are
A Team Committed to Excellence
A Decade of Delivering
Dennis Barrera started D&J Construction over 11 years ago with one goal — do the job right and keep clients happy. That approach never changed. Every project, big or small, gets the same level of care and attention. From Lake Ronkonkoma to Hempstead, the reputation built over the years speaks louder than any ad ever could.
We Show Up Ready
What makes D&J different is simple — reliability. You get a contractor who answers the phone, shows up when scheduled, and finishes what was started. No handoffs, no excuses. Dennis personally oversees the work on every project, which means the quality stays consistent whether it is a bathroom remodel in Smithtown or a deck build in Bay Shore.
Leaky walls? Outdated kitchen? Basement collecting dust?
Get a Reliable Contractor in Lake Ronkonkoma Who Actually Gets the Job Done
PROUDLY SERVING THESE AND NEARBY AREAS
Our Track Record
Numbers That Speak for Themselves
11+
Years
In Business
800+
Major Projects
Completed
2500+
Happy
Customers
20+
Cities
Serving
Why Choose D&J Construction
The Difference is Clear
Direct Owner Involvement
Dennis is not just a name on the truck. He is on the job, managing the work and making sure things are done the way they should be. You always know who is responsible for your project — and you can always reach him.
No Job Too Mixed
Most contractors specialize in one trade. D&J handles carpentry, remodeling, painting, tile, and more under one roof. That means fewer phone calls, fewer headaches, and one crew who knows your home from start to finish.
Long Island Experience
After 11 years working across Nassau and Suffolk County, D&J knows the homes, the neighborhoods, and what local homeowners actually need. That local knowledge matters when it comes to materials, timelines, and getting permits done right.
Available When You Need
Home problems do not follow a 9-to-5 schedule. D&J Construction operates 24/7, so when something urgent comes up in Bohemia or Levittown, there is always someone available to help you move forward fast.
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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