You know that moment when you stumble across a house that completely shifts your perspective on what’s possible? That’s kind of what happened when I discovered this stunning 1965 A-frame by Sandler-Kilburn Architects tucked away in Issaquah’s forest. While most Pacific Northwest homes from this era leaned heavily into the whole rustic cabin aesthetic, these architects took a completely different approach. They created one of twelve original Mirrormont homes using steel and glass instead of the expected heavy timber, and the result is absolutely beautiful. The 1,950-square-foot structure sits on over an acre near Tiger Mountain, creating this amazing conversation between industrial materials and ancient evergreens that just works on every level.
They’ve handled the material palette well, too. Instead of trying to blend in with fake rusticity, they went bold with steel framework and floor-to-ceiling windows that practically erase the line between inside and outside. Inside, custom walnut cabinetry frames the kitchen, bringing in just enough warmth without going overboard on the wood theme. The Tulikivi soapstone fireplace becomes this incredible sculptural centerpiece that heats the space efficiently.
Designer: Sandler-Kilburn Architects
The spatial planning here is excellent, especially if you’re into compact living done right. The A-frame shape creates these soaring ceiling heights that make the interior feel way bigger than its footprint suggests. Two bedrooms upstairs connect via a floating staircase that keeps the visual flow intact throughout the space. The primary suite becomes this perfect retreat with a Japanese soaking tub that turns everyday bathing into something almost meditative—exactly the kind of refined detail that elevates the whole living experience.
The main floor flows seamlessly from living to dining to kitchen, then spills out onto this extended deck that reaches into the forest canopy like a treehouse for adults. Standing out there must feel like you’re suspended among the trees while still being completely connected to the house. Most people think forest homes need to look like log cabins, but Sandler-Kilburn showed us that modernist principles can thrive in wooded settings. Their steel and glass technique weathers better than traditional materials while creating this timeless aesthetic that still looks fresh today. That curved roofline over the entrance adds such beautiful sculptural interest while being completely practical for shedding rain.
The market clearly agrees with the architectural significance here. This house went from $875,000 in 2016 to $1.8 million today, which tells you everything about how people are finally recognizing quality mid-century modern design. This Issaquah A-frame embodies everything I love about fearless residential architecture. Sandler-Kilburn created something that honors its forest setting without pandering to clichés, using materials that age beautifully while maintaining their modern edge.
The fact that we’re still talking about this house nearly sixty years later shows what happens when architects pick spatial quality and honest materials over trends. If you’re someone who appreciates a simple yet powerful architecture, then this steel and glass gem in the Washington woods is essential viewing for you.
The post Steel & Glass A-Frame Home Shows Off Soaring Ceilings, Treehouse Deck, & A $1.8M Price Tag first appeared on Yanko Design.