Who we are

Built on Experience. Driven by Purpose.

At Columbia Structure, we don’t believe in cutting corners — we believe in building right from the start. Our process begins well before the first shovel hits the dirt, rooted in strategic planning, thoughtful design, and a commitment to the details others overlook.

With every project, we’re focused on one goal: making the building process easier for our clients. That means smarter solutions, safer structures, and stronger outcomes — without the hassle of coordinating multiple firms or navigating unclear processes.

Frame of a wooden building under construction with a sloped roof, surrounded by gravel and dirt, with a cloudy sky overhead. Pole Barn Polebarn Poll Barn

Your Trusted Construction Partner


 We’re a specialized construction company with deep roots in Southwest Washington. Based in Castle Rock, we bring a blend of big-picture expertise and small-town values — grounded, collaborative, and fully committed to every build.

We operate as both general contractors and subcontractors, providing a consistent, high-quality standard of:

  • Expert project design

  • Seamless engineering coordination

  • Full-service permitting

  • Construction-ready post-frame kits

  • A dedicated crew that builds them from the ground up

With our in-house construction team handling both design and build, you benefit from tighter timelines, clearer communication, and the confidence that comes from working with one experienced, accountable partner.

What Sets Columbia Structure Apart

  • We’re not driven by volume

    That’s why we’re selective about the projects we take on, ensuring we can give each one the focus, energy, and expertise it deserves.

    Check us out

  • We’re driven by results

    Our ability to read the land, foresee grading and building challenges, and navigate pre-construction logistics makes us a valuable partner from day one. The result? Fewer surprises, smoother execution, and better-built outcomes.

    Our Team
NFB member sign with logo and slogan 'The Voice of Small Business' on a gray background.

Proud NFIB Member

National Federation of Independent Business, is a non-profit, non-partisan organization that advocates for the interests of small and independent business owners in the United States. It's a leading voice for small businesses in Washington D.C. and state capitals, aiming to influence policy decisions that affect their ability to operate and grow. 

A certificate titled 'Contractor of the Year 2025' awarded to Columbia Groundwork Inc. by Cowlitz County 811 Utilities Council, recognizing their skill, dedication, and safety in excavation.

Contractor of the year, 2025

We're proud to announce that ColumbiaGroundwork and Columbia Structure have been named the 2025 Contractor of the Year by the Cowlitz County 811 Utility Council! This prestigious recognition highlights our unwavering commitment to safety, quality, and innovation in every project we undertake. From expert excavation and utility groundwork to top-tier structural construction, our team consistently delivers excellence across Cowlitz County. Thank you to the 811 Utility Council for this honor—we're excited to continue building a stronger, safer community together.

Post-Frame Structures — Built Your Way

At Columbia Structure, we offer flexible post-frame solutions designed around your needs, budget, and timeline. Whether you want a completely custom-built post-frame structure, prefer to purchase a kit and build it yourself, or want a turnkey package where we handle the build for you, we’ve got you covered. Every option is backed by expert design, engineered quality, and a commitment to long-lasting value.

Construction workers and a red boom lift outside a large black metal building under construction, with a clear blue sky and trees in the background. Pole Barn Polebarn Poll Barn