Ketchum, ID

Brian Poster founded Poster Construction in 1997 with a simple intention: to build the kind of homes Ketchum deserves, with the kind of integrity the community recognizes. Nearly three decades later, we are still a locally owned, family-run business, and we still take that intention seriously. Our team lives here, raises families here, and knows what it takes to build a home that holds up through a Wood River Valley winter and looks beautiful in every season after. Whether your project is a ground-up custom home, a careful renovation, or a remodel that brings new life to a place your family already loves, we lead the work with the same care, the same crew, and the same commitment to doing right by the people who hired us.

Much of what we do well is best described by the homeowners and design partners we have worked alongside. Their words speak to the trust we have earned over many years and the relationships that continue long after a project closes. Clients in Ketchum return to us for second homes, additions, and referrals because the experience of building with Poster Construction is one they remember fondly. We are honored to let their voices speak on our behalf.

Poster Construction offers a complete range of building services for homeowners in Ketchum, and we are equipped to lead a project of any scope from start to finish. Custom homes are built from the ground up, designed in close coordination with you and your architect to fit your lot, your lifestyle, and the climate we build in. Remodels reshape the parts of your home that no longer match how you live. Renovations bring sensitive, modern updates to homes that already have soul. We also offer construction management and owner representation services for clients who want our experience and oversight on a project led by another team. Whatever the path, the work is held to the same standard, and the team behind it is the one whose name is on the building.

The Poster Construction team is small by design, which is how we keep the quality high and the communication direct. A dedicated supervisor and lead carpenter run every job, supported by an in-house crew and a network of trusted trades we have worked with for years. That structure gives our clients in Ketchum a clear point of contact, consistent craftsmanship from one phase to the next, and a project that stays organized through every stage of the build. We pride ourselves on being responsive, accountable, and present, which we believe is what every homeowner should expect from a builder, especially one entrusted with a project this significant.

We are proud to be Certified Green Professionals, and we are proud that our team includes more of them than any other custom home builder in Idaho. For us, sustainable building is not a feature we add at the end of a project. It is part of how we approach the work from the start, with attention to energy efficiency, durable materials, healthy indoor environments, and construction practices that respect the land we build on. Clients in Ketchum benefit from homes that are more comfortable to live in, less expensive to operate, and built to last for generations in a climate that asks a great deal of the structures within it.

Building in the Wood River Valley means accounting for snow loads, freeze-thaw cycles, dry summers, and the particular ways that mountain weather tests a home over time. Our team understands those demands because we have spent decades meeting them, and we apply that understanding to every decision, from foundation design to envelope detailing to the choice of finishes that perform well in our climate. The result is a home that is beautiful on the day you move in and beautiful many years later, having weathered the seasons exactly as it should.