Home Improvement & Remodeling Services in Holtsville, NY
Are you looking to reinforce your home against Long Island’s unpredictable seasonal weather with a new architectural roof? Or perhaps you want to elevate your curb appeal with premium insulated siding, or open up your living space with a custom interior remodel? Daniel R. O’Brien Contracting LLC is Holtsville’s trusted, locally owned partner for superior home improvements.
We are practically next-door neighbors! We’re based just minutes away and have been serving the Holtsville and surrounding Suffolk County communities since 1986. Over our 40-year history of local service, we have maintained a perfect A+ rating and a zero-complaint record with the Better Business Bureau (BBB)—a testament to our commitment to honesty, high-quality materials, and master craftsmanship.
High-Performance Exterior Home Improvements in Holtsville
With its open geography, Holtsville homes—especially those near the expansive Long Island Expressway corridor and Nicolls Road—are often exposed to high winds, driving rain, and freezing winter temperatures. To protect your investment, your home needs an exterior envelope built with top-tier materials and installed using proper code-compliant methods.
A strong roof is your home’s primary shield. We specialize in full residential roof replacements and leak repairs, using heavy-duty architectural shingles that can withstand hurricane-force winds.
If your home’s siding is fading, cracked, or drafty, it’s time for an upgrade that pays for itself. We install premium, thick-gauge vinyl siding, natural wood shakes, and ultra-durable James Hardie® fiber cement siding. By adding a modern house wrap and custom-fitted insulation beneath your new siding, we can significantly reduce your winter heating and summer cooling costs.
Eliminate drafts and instantly modernize your home’s facade. We install high-efficiency window and door replacements from trusted manufacturers like Andersen and Pella. Our double- and triple-pane options feature low-E glass coatings designed to block harsh summer heat while sealing in comfort during the freezing winter months.
With the beautiful, mature trees that landscape neighborhoods surrounding the Harold H. Malkmes Wildlife Education and Ecology Center, keeping gutters clear can be a relentless chore. We install custom-fabricated, seamless aluminum gutters and heavy-duty leaf guards that keep water flowing freely while protecting your fascia boards, siding, and basement from water damage.
Lifetime Roof Replacement & Repairs in Holtsville
Special Local Offer: Take $500 off any complete new roof installation in Holtsville.
Guaranteed Protection: Every replacement roof we install comes with a 50-year limited lifetime warranty and our 10-year workmanship guarantee. We thoroughly replace worn plywood, install leak barriers in the valleys, and ensure proper ridge ventilation to prevent ice dams in winter.
Tailored Interior Remodeling & Structural Additions
Many properties in Holtsville consist of classic split-levels, ranches, and colonials constructed during the suburban developments of the 1970s and 1980s. These homes have incredible "bones," but their interior layouts often feel closed-off or outdated for modern families. Our team specializes in transforming these spaces to match your lifestyle.
Upgrade the true gathering place of your home. Whether you want to remove load-bearing walls to design an open-concept kitchen and dining area, or install custom wood cabinetry, a functional central island, and durable quartz countertops, we guide you through every design decision to maximize both storage and style.
Turn your outdated bathroom into a spa-like retreat. From compact powder rooms to expansive master bathrooms, we handle custom walk-in tile showers, beautiful double-sink vanities, modern lighting, and high-capacity ventilation systems designed to keep dampness and mildew at bay.
If your family is growing but you love your local schools and neighbors, expanding your current footprint is the perfect solution. We specialize in second-story dormers and structural home extensions. Because Holtsville is uniquely split between the Town of Brookhaven and the Town of Islip, navigating the local building permit processes can be complex. We take care of the details, managing the project from initial architectural planning through final inspections.
Unlock the unused square footage right beneath your feet. We turn damp, dark basements into fully finished, warm, and inviting family spaces—such as home offices, media rooms, playrooms, or guest suites. We prioritize proper vapor barriers, mold-resistant insulation, and code-approved egress windows for maximum safety and comfort.
Why Choose Daniel R. O'Brien Contracting?
When you work with us, you are partnering with a local business that treats your home as if it were our own. We offer:
- True Proximity & Local Expertise: Serving our neighbors in Holtsville and Holbrook since 1986. We understand local soil conditions, weather patterns, and town building departments.
- Fully Licensed & Insured: Rest easy knowing your property is protected by comprehensive liability and workers’ compensation insurance.
- Direct Owner Supervision: Daniel R. O’Brien is on-site and directly involved in every project, ensuring no shortcuts are ever taken.
- Honest, Transparent Pricing: No high-pressure sales tactics. We provide detailed, written estimates and practical, long-term advice.
- Exclusive Client Savings: We proudly offer a 5% discount for Seniors, Military Veterans, and First-Time Customers.
Proudly Serving the Holtsville Community
We provide top-tier remodeling services to homeowners throughout all areas of Holtsville, NY, including neighborhoods near:
- The Holtsville Ecology Site & Animal Preserve
- Waverly Avenue & Patchogue-Holtsville Road
- Buckley Road & Blue Point Road
- The IRS Brookhaven Service Center area
- Local residential communities bordering Holbrook, Farmingville, and Ronkonkoma
Schedule Your Free Estimate Today
Let’s bring your home improvement vision to life. Call Daniel R. O’Brien Contracting LLC today at 631-981-2587 or fill out our simple online form to request your free, no-obligation consultation.