Let’s build your dream — together.

Home Additions (ADUs, Room Extensions)

At Universal Guys, we specialize in expanding what’s possible. Whether you need more space for family, work, guests, or income opportunities, we design and build custom home additions that feel like they’ve always belonged. From elegant room extensions to fully equipped ADUs (Accessory Dwelling Units), we transform your property to match your evolving lifestyle—seamlessly and beautifully.

Our team handles every aspect of your addition, including design, permitting, foundation work, framing, roofing, insulation, electrical, plumbing, HVAC, and finishing. We ensure that your new space integrates flawlessly with the existing structure—visually, structurally, and functionally. The result is a cohesive home that feels spacious, intentional, and future-ready.

With over 10 years of experience across the Greater Seattle area, we’ve completed everything from sun-drenched master suites and home offices to in-law units and garage conversions. We understand the complexity of additions—zoning, setbacks, utilities—and we manage the process with professionalism, precision, and full transparency.

Your addition should feel like a natural extension of your home—not an afterthought. That’s why we begin with a collaborative design process to understand how you live, what you need, and how to best use your space. Our recommendations are grounded in both aesthetics and long-term value.

At Universal Guys, we’re not just adding square footage—we’re building possibilities. Whether you're looking to create more comfort, generate rental income, or simply grow with grace, we’re here to make it happen—with quality, care, and vision.

Build upward. Build outward. Build better—with Universal Guys.