Quality Craftsmanship that will Stand for Generations

Established in 1984, GTM Construction Inc. is a premier design, remodel, & construction company in the Portland metro area for residential and commercial properties. Contact GTM Construction to begin your remodeling or new construction project for unique design and quality custom building.

Design & Construction of Residential and Commercial Buildings

GTM is available to design your new home, addition, kitchen, bathroom, outdoor living spaces, or commercial property.

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Featured Projects

GTM Construction, is experienced with CAD Design to provide you with new, innovative plans that meet you’re living and budgetary requirements. Whether you are going with traditional styles or the most modern ones, trust GTM to provide you with the custom design that you are seeking. Working plans are prepared by GTM ready for your approval while conforming to your city and neighborhood requirements.


“Many people take on large construction projects and end up unhappy with the quality of work and not liking their contractor. I am proud to say that after our project, not only are we extremely satisfied with Gary’s work, but also consider him a friend.”

Craig & Moana Simmons

“Thank you for having a crew so “right on it” … We really appreciate the good work.”

Matt & Lori Grady

“I employed Mr. Gary Mimnaugh…to design and construct extensive decking at my home on the lake in Lake Oswego and also remodel my kitchen. His attention to close detail and workmanship was beyond my expectations. I was very impressed with not only his work but the ease of working and communicating with him. He is very professional, honest, and was able to finish my work in a timely fashion. I highly recommend Mr. Mimnaugh to future clients.” Robert Orians
“I would like to recommend the construction services of Gary Mimnaugh of GTM Construction, Lake Oswego Oregon. Gary was the General Contractor for a major renovation/addition to a single family residence in Lake Oswego, OR… He did all of the demolition, framing, siding, finish work as well as coordinated all of the sub trades. His work was fast, clean, and accurate. He was cooperative and energetic. I look forward to working with him in the future.” Roy Ettinger /Architect

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Phone: 503.519.0762 Fax: 503.697.3377

GTM Construction, Inc. 1330 Troon Dr, West Linn, OR 97068