At Thornberg Construction, we specialize in building custom homes and remodels in the Greater Seattle Eastside. As the premier custom home builder and residential contractor in Issaquah, we focus on custom homes, remodels, renovations, and additions. Proudly serving homeowners in Issaquah, Sammamish, Bellevue, and beyond, our family-owned business has been building in Seattle’s Eastside for decades—your project is in good hands.
We combine decades of hands-on expertise with your personal style to design and build a home that fits your lifestyle. Let us bring your vision to life with the same time-tested methods that have guided us for four generations in the Seattle Eastside.
Revitalize your space with our expert remodel and renovation services. From gourmet kitchen upgrades to tranquil bathroom retreats, we offer thoughtful design and expert craftsmanship—always delivered with an unwavering commitment to your satisfaction.
Love your neighborhood but need more space? Our home additions respect your existing architecture and integrate seamlessly with your current layout. Whether adding a second story or a sun-drenched patio, we’ll handle every detail with care and craftmanship.
We have honed our craft over four generations, ensuring each project benefits from decades of hands-on knowledge.
Rooted in the Seattle Eastside community for decades, we uphold the highest standards in every project.
Our family has lived and built in this region for years, and we know how to partner with our clients.
We keep you informed at every step with clear and prompt communication.
Membership in these associations ensure we stay up-to-date with best practices, maintain ethical standards, and remain deeply connected to the local construction community.
With our proven track record across Issaquah, Bellevue and beyond, we’ve helped countless homeowners enjoy immediate comfort and long-term returns on their remodels. Our four generations of building knowledge ensure each addition is both functional and beautiful.
