Welcome to the Treehouse! Discover this enchanting two-story house on Mercer Island, Washington, where Floisand Studio Architects masterfully revitalized a 70’s-era Ralph Anderson gem.
Immerse yourself in traditional design, carefully updated to create functional and fresh spaces inside and out, all while preserving the charm of the original home. The property is nestled among trees, offering privacy, daylighting, and spectacular views of nature’s beauty.

About Treehouse
Breathing New Life into a 70’s-Era Home
Nestled among the trees on Mercer Island, Floisand Studio Architects skillfully renovated and modernized a 70’s-era home, originally designed by prominent Seattle architect Ralph Anderson. The team meticulously preserved the features the family loved while introducing fresh and functional spaces both inside and out. Transforming the Entryway and Outdoor Spaces
The transformation began with a new entryway, where hardscaping, steel planters, and angled landscape walls guided guests through the tree-filled property to the front door. A raised concrete porch, now clearly marking the entrance, replaced the previously hard-to-find one. A steel and wood canopy added lighting and protection from the rain, while thoughtfully placed landscaping created privacy for the interior spaces.
Reimagining the Main Floor Layout
The architects gutted and remodeled the main floor to create a more functional living area for the family of f...