Basement Refinishing in Port Jefferson, New York
Transforming Unused Basements Into Comfortable, Functional, and Inviting Living Areas
Beneath your home lies opportunity—your basement can evolve into a living space full of comfort and purpose. At Seaview Contracting LLC, we specialize in transforming underused lower levels into warm, inviting living areas that complement your home’s design and functionality. Whether you envision a cozy home theater, private gym, guest suite, or modern office, our mission is to craft spaces that elevate comfort and lifestyle. With over 15 years of design and construction experience, we combine creativity, craftsmanship, and premium materials to deliver results that are both inspiring and enduring.
Proudly serving Port Jefferson, New York, and the nearby Long Island communities of Setauket, Mount Sinai, Stony Brook, and Miller Place, we specialize in premium residential transformations. Our expertise in Long Island’s North Shore homes gives us an advantage in addressing local design preferences, soil conditions, and climate challenges. From waterproofing solutions to advanced insulation and ventilation systems, we ensure every refinished basement remains comfortable, energy-efficient, and built to perform year-round.
At
Seaview Contracting LLC, basement refinishing is more than a construction project—it’s a transformation of how you experience your home. Every project begins with a detailed consultation to understand your vision, goals, and budget. From structural framing and moisture control to flooring, lighting, and final finishes, we handle every step with precision, transparency, and care. We don’t just finish basements; we redefine them as extensions of your lifestyle—spaces that inspire connection, creativity, and long-term satisfaction.
Free Estimate!
For the fastest reply, call or text us 24/7 at 631-680-8129
Free Estimate!
For the fastest reply, call or text us 24/7 at
Contact Us
We will get back to you as soon as possible.
Please try again later.
Our Services
Title
This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme. This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.
Title
This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme. This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.
Title
This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme. This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.
Title
This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme. This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.
Title
This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme. This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.
Title
This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme. This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.
Our Basement Refinishing Services
Basement Design and Layout Planning
We begin every project with strategic space planning. By assessing square footage, lighting, and access points, we create designs that optimize flow and usability. Our planning process ensures your refinished basement feels open, functional, and seamlessly integrated with the rest of your home.
Waterproofing and Moisture Control
A dry basement is the foundation of long-term comfort. We apply waterproof coatings, install vapor barriers, and manage drainage systems to prevent leaks and humidity issues. This essential step safeguards your investment and creates a clean, healthy living environment you can enjoy for years.
Framing, Drywall, and Insulation
Our expert team builds strong, well-insulated structures that provide warmth and sound control. Using moisture-resistant drywall and insulation materials, we maintain ideal temperature balance and acoustic comfort—ensuring your basement remains cozy, quiet, and energy-efficient all year round.
Flooring and Ceiling Installation
From luxury vinyl and engineered wood to drop ceilings and exposed finishes, we offer materials that combine durability with design appeal. Our professional installation ensures smooth transitions, visual harmony, and comfort—turning your basement into a stylish, livable extension of your home.
Lighting, Electrical, and HVAC Integration
We install efficient lighting systems, upgrade electrical components, and extend HVAC connections for consistent comfort. Proper ventilation and illumination make your basement bright, safe, and inviting—perfect for relaxing, entertaining, or working in a well-balanced environment.
Finishing Touches and Custom Features
It’s the small details that define excellence. We add trim work, built-ins, accent walls, and decorative finishes that personalize your space. Every finishing touch enhances character, cohesion, and sophistication—completing your basement’s transformation into a warm and inspiring retreat.
Insert Title
Insert Title
This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.
This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.
Benefits of Professional Basement Refinishing
Maximized Living Space
Basement refinishing unlocks your home’s hidden potential. Whether creating entertainment zones, guest suites, or workspaces, it adds valuable square footage that enhances usability and comfort. Our thoughtful designs make every inch purposeful, offering new functionality and livability without the need for costly expansions or disruptive additions.
Increased Property Value
A refinished basement significantly raises your home’s market appeal. Buyers value well-designed lower-level spaces that extend living capacity. Using premium materials and expert craftsmanship, we ensure enduring quality and beauty—providing a lasting return on investment while strengthening your property’s long-term market position and desirability.
Enhanced Energy Efficiency
Proper insulation, vapor barriers, and efficient lighting transform your basement into an energy-smart environment. By reducing heat loss and maintaining consistent temperatures, we lower energy bills and improve comfort year-round—creating a sustainable, eco-friendly space that supports both environmental responsibility and long-term household savings.
Improved Comfort and Safety
Our refinishing solutions eliminate cold drafts, moisture, and mold risk. With superior insulation, ventilation, and waterproofing, we ensure your basement stays warm, dry, and healthy. The result is a comfortable, secure space ideal for recreation, relaxation, or productivity—all within a clean and durable environment.
Customized Design and Functionality
Your basement should reflect your personality and lifestyle. We personalize every design with tailored layouts, lighting, and finishes to suit your needs—whether you envision a home theater, gym, or guest retreat. Every element enhances functionality, comfort, and aesthetic flow throughout your newly finished space.
Long-Term Structural Protection
Our refinishing process safeguards your home from future issues. We reinforce foundations, seal cracks, and apply waterproof systems that prevent leaks and pest intrusion. These proactive measures enhance durability, structural integrity, and overall property protection—ensuring your investment remains secure and resilient for decades.
Testimonials
See What Our Customers Are Saying!
Jeremy has helped me with plumbing issues for my personal home and for several of my clients. He's always in a positive mood, efficient, respectful, and easy to work with. I've referred him to a number of people.
Laura M.
Jeremy has helped me with plumbing issues for my personal home and for several of my clients. He's always in a positive mood, efficient, respectful, and easy to work with. I've referred him to a number of people.
Laura M.
Jeremy has helped me with plumbing issues for my personal home and for several of my clients. He's always in a positive mood, efficient, respectful, and easy to work with. I've referred him to a number of people.
Laura M.
Testimonials
See What Our Customers Are Saying!
Unlock Your Basement’s Potential — Turn Unused Space Into Something Extraordinary
From dark storage to a stunning new living space — we turn your basement into the most functional room in your home. At Seaview Contracting LLC, we take pride in transforming unfinished basements into vibrant, comfortable areas that bring new life and value to your property. Our expertise in Port Jefferson, New York, and the surrounding North Shore communities—including Setauket, Mount Sinai, Stony Brook, and Miller Place—allows us to craft spaces that suit local homes and coastal design preferences. Every project we undertake blends precision craftsmanship, transparent communication, and innovative materials, ensuring results that exceed expectations. Whether you’re envisioning a cozy family retreat, a home office, or a stylish guest suite, we deliver flawless execution from concept to completion. We don’t just finish basements—we create spaces that inspire connection, creativity, and long-term satisfaction, redefining the way you live, work, and relax at home.
Frequently Asked Questions
How long does a basement refinishing project take?
Most refinishing projects take between six and ten weeks, depending on size and complexity. Factors such as custom layouts, permitting, or additional upgrades may extend timelines. We provide a clear project schedule before starting and maintain transparent communication throughout every stage to ensure timely completion and client satisfaction.
Can you remodel basements with existing moisture issues?
Yes. We specialize in comprehensive waterproofing and moisture control before beginning any refinishing work. Our process includes sealing cracks, installing vapor barriers, and managing drainage systems. These steps ensure a dry, long-lasting space ready for safe flooring, drywall, and insulation installation without recurring water or humidity problems.
Will finishing my basement increase home value?
Absolutely. A finished basement adds usable square footage and versatile living space, significantly increasing property value and appeal. Whether for resale or long-term comfort, our expertly refinished basements combine beauty and function—making them one of the most valuable and rewarding home improvement investments available to homeowners today.
Do you handle electrical and plumbing installations?
Yes. Our licensed professionals manage all electrical, plumbing, and lighting installations required for your basement refinishing project. We ensure full compliance with local building codes while optimizing performance and safety—creating a functional, energy-efficient environment tailored to your home’s needs and your preferred layout design.
What are the most popular uses for refinished basements?
Homeowners commonly convert basements into family lounges, gyms, offices, or guest suites. Others create home theaters, playrooms, or entertainment spaces. We customize designs to match your lifestyle and vision, ensuring each square foot is practical, comfortable, and aesthetically aligned with the rest of your home.
How do you prevent mold and moisture in finished basements?
We apply proven waterproofing methods including drainage solutions, vapor barriers, and moisture-resistant materials. Additionally, we recommend quality insulation and mechanical ventilation systems. These combined strategies keep your basement dry, breathable, and mold-free—promoting long-term structural integrity and a healthier indoor environment for your family.
Are materials used safe and durable?
Yes. We exclusively use non-toxic, moisture-resistant, and eco-friendly materials ideal for below-ground environments. From insulated flooring to mold-resistant drywall and finishes, every product meets strict standards for durability, air quality, and safety—ensuring your newly refinished basement remains healthy, strong, and beautiful for years.
What areas do you serve outside Port Jefferson?
We proudly serve Setauket, Mount Sinai, Stony Brook, and Miller Place, offering expert basement refinishing services across Long Island’s North Shore. Our regional expertise ensures every remodel aligns with local architectural styles, environmental conditions, and homeowner preferences, delivering lasting comfort, beauty, and value to every project.
Frequently Asked Questions
Title or Question
Describe the item or answer the question so that site visitors who are interested get more information. You can emphasize this text with bullets, italics or bold, and add links.Title or Question
Describe the item or answer the question so that site visitors who are interested get more information. You can emphasize this text with bullets, italics or bold, and add links.Title or Question
Describe the item or answer the question so that site visitors who are interested get more information. You can emphasize this text with bullets, italics or bold, and add links.