Custom Home Additions

Designed in all shapes and sizes

At Thomas Custom Builders, we know that home additions are a huge investment and commitment, second only in scope to building a new home. We understand that with your home addition, you are looking not just for a new room but for expanded opportunities to eat, sleep, work or play. That’s why we take the time to carefully listen to your goals and understand your requirements. From transforming an attic addition into a comfortable bedroom or expanding a current bedroom into an in-law suite, Thomas Custom Builders can help you design and build your dream home.

large home addition Fairfax, Virginia

Adding Value

Custom home additions have an impact on a home’s value – no question. That value is calculated not only by the financial investment and the resulting real estate value, but also on the satisfaction and enjoyment it brings the homeowner. You’re investing your time and treasure into a remodeling project that will improve your lifestyle now and in the future. We want to make sure you get what you want.

As a design-build firm, Thomas Custom Builders follows a proven process called value engineering that delivers all the custom features you need at a cost that works for your budget. Our superior craftsmanship and careful selection of materials results in an energy-efficient home that will help save you money in the long run.

link to home additions photos


Build the Home Addition That's Right for You

From home additions over the garage to second floor pop-up additions, Thomas Custom Builders has the experience and resources necessary for professional home remodeling in Northern Virginia. We’ve remodeled countless homes in the area, and we can make your vision a reality, too.

Take advantage of the Thomas Custom Builder craftsmanship in all things custom built and designed. Contact us today to add beauty and stature to your home additions.


Serving all of Northern Virginia since 2004.

Thomas Custom Builders can build a home addition that will make your home more spacious and comfortable. Contact Us today to make your vision a reality.