Custom home Additions
Designed in all shapes and sizes

Adding Lasting Value
A thoughtfully planned home addition not only increases your home’s market value, but also enriches your everyday life. We believe true value is measured by the enjoyment and satisfaction you gain, in addition to the financial investment you make. Your remodeling project is an investment in your family’s future comfort, convenience, and happiness—and our goal is to ensure you get exactly what you desire.
As a design-build firm, Thomas Custom Builders employs a proven value engineering process, allowing us to deliver all the custom features you want—at a price that fits your budget. Our commitment to quality craftsmanship and careful material selection ensures your addition is as energy-efficient as it is beautiful, saving you money for years to come.
Crafting Tailored Spaces That Reflect Your Vision
At Thomas Custom Builders, we understand that adding onto your home is a major investment—often rivaled only by building a new home itself. Your addition is more than just extra square footage; it’s about expanding the opportunities for your family to gather, work, rest, and play. That’s why our team takes the time to truly listen—learning about your goals and requirements to create a space perfectly tailored to your lifestyle.
Whether you envision transforming an unused attic into a cozy bedroom or expanding an existing space into a luxurious in-law suite, Thomas Custom Builders is your partner on the journey to your dream home.



Transform Your HOME'S EXTERIOR
Craftsmanship Meets Customization
Experience the difference with Thomas Custom Builders, where your vision becomes our mission.
Build the Home Addition That's Right for You
Whether you’re considering a room above the garage, a second-floor pop-up, or a stunning sunroom, Thomas Custom Builders has the expertise and resources to bring your vision to life. We’ve transformed homes across Northern Virginia—let us transform yours.
- Attic Addition
- Family Room Addition
- In-Law Suite Addition
- Room Above Garage Addition
- Second Floor Addition
- Sun Room Addition
Thomas Custom Builders is ready to create a home addition that makes your living space more spacious, comfortable, and inspiring. Contact us today, let’s turn your dream into reality.