Rooted in European building techniques, our team brings decades of hands-on expertise to custom residential construction. With uncompromising standards for craftsmanship, professionalism, and clear communication, Claddagh Construction has earned a reputation as one of Seattle’s most trusted luxury home builders.
We specialize in transforming unique visions into extraordinary homes, combining decades of residential construction knowledge with a seamless, high-touch experience. Our work is fully custom, architect-driven, and built to last. From early collaboration to final walkthrough, we bring focus, care, and clarity to every step of the journey.
Claddagh Construction was founded in 1996 by Roger O’Sullivan, a certified expert in European building techniques with a passion for quality craftsmanship. With decades of hands-on experience and a deep commitment to doing things right, Roger remains the driving force behind every project — from the first sketch to the final detail.
Have a project in mind?
We’d love to turn your vision into reality.
We’re always interested in connecting with skilled,
passionate professionals who take pride in their work.
We’re always interested in connecting with skilled, passionate professionals who take pride in their work.
Licensed bonded & insured / LIC # CLADDC1044LM
