Quality & Craftsmanship that will stand for Generations.


"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

"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

"Superb workmanship, excellent attention to detail, a joy to work with. Thanks for doing such a fine job on our deck, it is the "highlight" of our backyard…"
— Syd Dorn

"Thank you for having a crew so "right on it" … We really appreciate the good work."
— Matt & Lori Grady

"Our project was quite unique so we were extremely careful in selecting our contractor. GTM completed the project on–time and within budget. If I ever have to hire another contractor… it will be GTM."
— Jim & Leslie McKenna

Complete list of reference names and phone numbers available from GTM Construction, Inc.