TopLine Home Construction

Why Choose TopLine for Your Home Extension?

Our home addition services combine personalized planning, thoughtful design, and dependable construction to create new spaces that feel like a natural part of your Long Island home.

Custom Addition Plans

Every extension is designed around your home, space, and lifestyle.

Seamless Home Integration

New spaces are planned to complement your existing structure and design.

More Space and Value

A quality home addition can improve comfort, function, and property value.

Trusted by Long Island Homeowners

Long Island homeowners choose TopLine Home Construction for detailed planning, dependable communication, clean project sites, and home additions completed with professionalism and care.

Top Of The Line Outcomes

I have used and recommended Topline many times to great outcomes. Bathrooms, additions, and anything building, this company rocks it out while maintaining a professional appearance and clean work environment.

Chadwick Briedis

Reliable, Consistent, Top Quality

Dom is an amazing contractor. He not only over delivers his guys cleaned up after themselves every day always taking time to answer questions.

Andrew Boico

Our customer retention rates doubled!

Dom and team were great to work with. Came in with a great plan for my bathroom remodel and everything turned out great. Clean work and the team were great and reasonably priced. I highly recommend them.

John Klein

Professionalism, TopLine Quality, Extreme Value!

Absolutely the best of the best! Dom and his team gave us the kitchen and bath we always wanted. Detailed estimate, shows up on time, excellent workmanship and communication, the best price, honest, ethical, and conscientious. (And Dom is a wonderful family man and retired military 🇺🇸)
Just can’t rave enough about them! ⭐️⭐️⭐️⭐️⭐️

Kara Fabian

Transform Your Home, Expand Your Living

At TopLine Home Construction, we transform your home with expertly crafted extensions. Whether it's a second-story addition, in-law suite, or master bedroom retreat, our team brings your vision to life with precision and style.

See Below What Topline Can Add To Your Home!

Second-Story Addition

Expand your home with a second-story addition from TopLine. Gain extra space for bedrooms, an office, or recreation, enhancing your home's value and functionality.

In-Law Suite Extension

Discover the convenience and flexibility of an in-law suite designed by TopLine. Our expertise in multigenerational living ensures a seamless integration of living spaces, offering a dedicated area for extended family members or guests. Tailored to your needs, our in-law suite extensions prioritize comfort, privacy, and practicality.

Master Bedroom Retreat

Indulge in luxury with a master bedroom retreat crafted by TopLine. Transform your sleeping quarters into a sophisticated haven with spacious layouts, elegant finishes, and thoughtful design. Our master bedroom extensions prioritize both comfort and aesthetics, creating a serene escape within your own home.

Sunroom Extension

Embrace the beauty of natural light and the outdoors with a sunroom extension from TopLine. Our designs seamlessly integrate your living space with the surrounding environment, offering a versatile area for relaxation and entertainment. Choose TopLine for a sunroom that caters to your lifestyle while adding charm and value to your home.

Garage Conversion

Unlock the full potential of your home by converting your garage with TopLine. Whether you envision a guest suite, home office, or additional living space, our garage conversions are designed to maximize functionality without compromising on style. Experience a transformation that adds both utility and appeal to your property.

Wrap-Around Porch Extension

Elevate your home's exterior with a wrap-around porch by TopLine. While not adding indoor space, our porch extensions redefine curb appeal, creating a welcoming outdoor retreat. Whether you seek a cozy spot for morning coffee or a charming space for socializing, our wrap-around porches enhance the character and desirability of your home.

Home Gym or Yoga Studio Extension

Prioritize your health and wellness with a dedicated exercise space by TopLine. Our home gym or yoga studio extensions cater to your fitness needs, providing a personalized area for workouts or mindfulness practices. Choose TopLine for an extension that promotes well-being and adds a valuable dimension to your lifestyle.

Media or Entertainment Room Extension

Immerse yourself in entertainment with a media or entertainment room from TopLine. Our expertly designed spaces cater to families or individuals who appreciate leisure and relaxation at home. Whether it's a cozy movie night or a gaming haven, our extensions elevate your entertainment experience with style and functionality.