Custom Homes

We promise to build high-quality custom homes throughout

Suncadia, King County & Kittitas County

that are designed, built and delivered with certainty.

                                                                                                   -Sean Northrop, Founder & CEO


Whether you‘d like;

  • A custom home in the city
  • a year-round getaway in the mountains
  • or anything in between

Our team promises to deliver an innovative home for an extraordinary lifestyle, with features that stand the test of time. The result is a luxurious work-life balance with the modern conveniences you desire.

We begin each project by offering the personal attention expected from a trusted friend with an approach that is informed by decades of homebuilding and design experience, shaped by an appreciation for a Pacific Northwest lifestyle. Our passion for design, innovation and construction is driven by a mission to deliver a home that uniquely expresses your vision, values, schedule and budget.

Every Trailside home is designed and built with integrity, high-quality craftmanship and enduring value. We understand terrain, topography, views, outdoor/indoor living and the changes each season brings and we rely on this expertise from concept to completion, resulting in a home that is uniquely yours.


  • Full custom home construction
  • Fixed guaranteed pricing
  • Land development & planning services
  • Architectural, engineering, and design resource management
  • Quick-start custom home options
  • Extensive portfolio of home designs & finishes options

Trailside proudly employs a proprietary process called Design360™ to all custom home projects. Design 360 is a unique and powerful practice that seamlessly integrates the location, land, architecture and the interior of a home to create the very best in living experiences so your home and land are planned to maximize indoor and outdoor spaces offering equal parts function, beauty and comfort.

Let us help you envision your future – bring your custom home ideas, sketches, Pinterest boards, Houzz pages or back of the napkin ideas – you don’t have to have a permit set of plans to meet with our team. As inspiration, or in an effort to fast track the custom home design process, we offer an extensive library of home designs and designer finish options to help ignite your imagination.

With offices on both sides of the Cascades we are able to meet with you just about anywhere.  Contact us today to discuss our Custom Home services; we’d love to hear your ideas and share some of our own.

We live by one motto; Adventure Outside, as one of the largest independent community and home builders in the Pacific Northwest. Homes are built to enrich a person's life through every element by connecting them to the outdoors. The Trailside Homes team is passionate about family and community by sharing life with outdoor experiences. Learn more about why home is from Coast to Cascades.