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We have had the privilege of working with James on several projects around the property and look forward to many more to come. James has also been our go-to guy for ensuring we are making good decisions on our building projects, and even for helping get us out of sticky situations such as stuck cars and snowed in driveways. James and his crew are prompt, responsive and honest-three of most difficult to find, and most crucial characteristics in any building crew and contractor.

David and Melissa Philips Somers, MT

As a structural engineer, I was so impressed with the work that Reum Custom Building did on a house that I structurally designed, that I hired Reum Custom Building to build my own personal home.  James Reum is a fantastic guy to work with, and he consistently produces quality work while respecting the construction budget and schedule.  I have highly recommended Reum Custom Building to others, and I will continue to do so.


Mark Waatti, PE, SE, PEng

Structural Engineer

“Having worked with him both personally and professionally, James has shown a great aptitude for his craft. He is knowledgeable, skilled and efficient. I would not hesitate to recommend James as a contractor.”

David Lewing |   Glacier Bank

Working with James was a very positive experience, start to finish.  Working off a sketch, he quickly "got" what we wanted our boat barn to look like and how we wanted it to complement our lakehouse. He had access to unique rustic materials, he was organized, efficient, and communicated clearly, and his professionalism, high standards, and craftsmanship are clearly evident in our finished building. James is the kind of person who will go above and beyond and these days that's really refreshing.  I'd recommend him without hesitation!

Robin Patterson

My husband and I had Reum Custom Building do a major remodel of our living/kitchen area.  James and his crew were able to do the entire project from tear down of a large stone fireplace and dividing wall, to the design of a new support for the chimney and a beautiful hi top granite table.  He found an excellent electrician to do major rerouting of our electrical system and recommended a top notch tile setter for our new flooring.  We couldn't be happier with the new open feel in our home and were very satisfied with the time line and outcome of the entire project.

Mary and Dennis| Polson

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