CUSTOM BUILT HOMES
WITHOUT COMPROMISE

Partner with P. DeBlasio Builders on Long Island for high-end custom home construction, luxury renovations and remodeling, built around your vision.
SCHEDULE A CONSULTATION CALL: (631) 584-5500
Welcome to p deblasio builders

CUSTOM HOME BUILDERS
WELCOME TO P. DeBLASIO BUILDERS

For nearly four decades, P. DeBlasio Builders has earned a trusted reputation for high-end custom construction, luxury renovations, and detailed remodeling throughout the North and South Shores of Long Island. Led by Phil DeBlasio, our company brings more than 40 years of hands-on experience to every project, delivering thoughtful craftsmanship, careful planning, and custom results that are never cookie-cutter.

From new construction and major renovations to kitchens, baths, outdoor living spaces, roofing, siding, windows, design support, and construction management, P. DeBlasio Builders works closely with homeowners, architects, and property owners who expect the details to be done right. Whether you are building a custom home in St. James, renovating a property in Port Washington, or improving a home anywhere from Great Neck to Montauk, our team is ready to bring experience, precision, and pride to your project.
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OUR SERVICES
HIGH-END CONSTRUCTION & REMODELING SERVICES
 

Home remodeling in st james ny

NEW CONSTRUCTION

P. DeBlasio Builders creates custom homes in St. James, NY and across Long Island with detailed planning, skilled craftsmanship, and a commitment to building each home around the client’s vision.
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Renovations and remodeling

RENOVATIONS & REMODELING

Our renovation and remodeling services help homeowners transform existing properties with refined updates, structural improvements, and custom finishes that feel intentional from start to finish.
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Pre construction services

DESIGN, PLANS & PRE-CONSTRUCTION

P. DeBlasio Builders assists with design coordination, plans, project planning, and pre-construction guidance to help homeowners move from ideas to a clear, buildable vision.
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P deblasio construction management services

CONSTRUCTION MANAGEMENT

Our construction management services keep custom building projects organized, coordinated, and professionally managed from early planning through final completion.
 
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High en home builders bay windows
ROOFING, SIDING & WINDOWS
We provide roofing, siding, and window services that improve curb appeal, protect the home, and support the long-term quality of high-end residential properties.
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Kitchens bathrooms and outdoor living 2

KITCHENS, BATHS & OUTDOOR LIVING

P. DeBlasio Builders designs and builds custom kitchens, luxury bathrooms, patios, decks, and outdoor living spaces that enhance everyday comfort, beauty, and function.
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WHY CHOOSE P. DeBLASIO BUILDERS?
HOME BUILDERS YOU CAN TRUST
 

DECADES OF EXPERIENCE

With 38 years in business and more than 40 years of experience, P. DeBlasio Builders brings proven knowledge to every custom build and renovation.

COASTAL EXPERTISE

Our team understands the quality, style, and expectations of custom homes throughout all North & South Shore towns, the Hamptons, and surrounding Long Island communities.

TRUSTED ARCHITECTS

NYC architects have trusted P. DeBlasio Builders to construct their own custom homes, reflecting the company’s reputation for quality and attention to detail.

CUSTOM, NEVER COOKIE-CUTTER

Every project is approached with the client’s vision, property, lifestyle, and long-term goals in mind.

STRONG LOCAL REPUTATION

Many homeowners return to P. DeBlasio Builders for future properties, renovations, and additional construction projects.

HISTORY OF GIVING BACK

We are proud to support the St. James community through local involvement, Chamber of Commerce membership, and contributions to meaningful community projects and landmarks.

40+

YEARS EXPERIENCE

1,500+

PROJECTS COMPLETED

100%

CLIENT FOCUSED

5-Star

CRAFTSMANSHIP

ADDITIONAL REMODELING SERVICES
COMPLETE CUSTOM BUILDING & REMODELING SERVICES
 

• Custom home construction

• Luxury home renovations

• Whole-home remodeling

• Kitchen remodeling

• Bathroom remodeling

• Outdoor living spaces

• Roofing services

• Siding installation

• Construction management

• Design and plans coordination

• Pre-construction planning
P deblasio builders guarantee
• High-end home improvements

• Hamptons construction projects

• Port Washington custom remodeling

• Custom carpentry

• Interior renovations

• Exterior renovations

• Residential construction

• Commercial construction

• Municipal construction

• North Shore Long Island renovations

• St. James home additions



FEATURED CUSTOM PROJECTS

 

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New home construction

About p deblasio builders

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Home renovatons

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VIEW OUR PROJECT GALLERY

AREAS SERVED

PROUDLY SERVING FROM GREAT NECK TO MONTAUK

Located in St. James, NY and serving communities across Long Island, P. DeBlasio Builders provides high-end custom home construction, luxury renovations, and detailed remodeling services for homeowners who expect exceptional craftsmanship. From new construction and whole-home renovations to kitchens, baths, roofing, siding, windows, and outdoor living spaces, our team brings decades of experience and a trusted reputation to every project.

Address:
273 Lake Avenue
Saint James, NY 11780

Phone:
(631) 584-5500

Business Hours:
Monday - Friday: 8:00am - 4:30pm
Saturday - Sunday: Closed
Commercial construction

WE BUILD LOCAL BUSINESSES, PUBLIC SPACES & COMMUNITY LANDMARKS

In addition to high-end residential construction and renovations, P. DeBlasio Builders has completed select commercial and municipal projects throughout St. James, Smithtown, Commack, and surrounding Long Island communities. Our experience includes work at Hoyt Farms, the Short Beach Pavilion in Smithtown, Daniel J. Flynn Memorial Park in Commack, Energy Fitness in St. James, an extension at Smithtown Landing, and Sider Lumber on Southern Boulevard in Nesconset. These projects reflect the same level of planning, craftsmanship, and construction management that P. DeBlasio Builders brings to custom homes, with careful attention to function, durability, timelines, and long-term value.
SCHEDULE YOUR CONSULTATION

THREE EASY STEPS
OUR CUSTOM CONSTRUCTION PROCESS
 

STEP 1:
PROJECT SCOPE & REVIEW

We begin by discussing your goals, property, timeline, plans, and overall vision so we can understand the scope of your custom construction or remodeling project.

STEP 2:
PLANNING & COORDINATION

P. DeBlasio Builders helps coordinate the details, review plans, organize the construction process, and prepare the project for a smooth build.

STEP 3:
BUILD & COMPLETION

Our team manages the work with care, communication, and craftsmanship, delivering a finished project built to reflect your vision and long-term expectations.

READY TO BUILD SOMETHING EXCEPTIONAL?

P. DeBlasio Builders brings custom craftsmanship, trusted experience, and high-end construction expertise to homeowners across Long Island.
GET A FREE ESTIMATE CALL: (631) 584-5500

TESTIMONIALS & REVIEWS
WHAT PEOPLE ARE SAYING
 

Google testimonial
"P. DeBlasio Builders handled our renovation with the kind of care and detail you hope for but rarely find. Phil and his team understood exactly what we wanted and delivered a finished space that feels custom in every way."
— Tom H.
Facebook testimonial
"We hired P. DeBlasio Builders for a major home renovation in Port Washington, and the quality of work was outstanding. The project was organized, the craftsmanship was excellent, and the final result exceeded our expectations."
— Lisa D.
Google testimonial
"Phil DeBlasio has a reputation for a reason. His team brings experience, honesty, and true pride in their work, which made a complicated custom project feel much easier to manage."
— Eddie R.

CONTACT P. DeBLASIO BUILDERS
GET IN TOUCH WITH US TODAY

Have a question about our custom building or remodeling services?
Want to speak with an experienced builder?
Need to discuss plans for a new construction, renovation, or construction management project?

Whatever it is, P. DeBlasio Builders is only a call or “click” away. Give us a call or use the form below to contact us today.

Call Now: (631) 584-5500