Mercer Island sits at the heart of Lake Washington, connected to Seattle and Bellevue by the I-90 corridor yet defined by a sense of quiet, wooded retreat that sets it apart from both cities. Its residential neighborhoods range from mid-century modern classics tucked into the hillsides to contemporary waterfront estates that frame sweeping views of the Cascades and the Seattle skyline. Designing a home here requires more than aesthetic vision—it demands a deep understanding of the island's topography, its shoreline and critical area regulations, and the City of Mercer Island's permitting process. That is exactly what Refine Design Architecture brings as your local architects on Mercer Island. We specialize in custom residential architecture that responds to its setting. Whether you are building a new home from the ground up, adding space to a beloved existing house, or renovating to better match how your family lives today, our team approaches every project with the same level of care and craft. We listen first—understanding your story, your lifestyle, and your aspirations—before a single line is drawn. From there, we guide you through pre-design, design, permitting, and construction documentation with transparency and skill. Mercer Island's architecture deserves thoughtful stewardship, and we are proud to be the local architects residents trust to get it right. If you are ready to start a conversation about your home, we would love to hear from you.
