Who we are

Since 1998 builder John Cotner has been a leader in the residential building industry in and around the Treasure Valley Idaho. His committment to quality and continued education has made him stand out as an industry leader for custom home creation.

Cotner Building Company, LLC

About Us

Custom home designer and builder specializing in energy efficiency and handicap accessiblilty.


John and Stevi Raff
Relationship: Client
Project Date: Aug 2018

We just cannot say enough AMAZING things about our experience with Cotner Building Company. From the beginning, John and Kristie made the process easy, and stress free. We quickly knew that we were in... Read More

Sharon and Woody Travis
Relationship: Client
Project Date: Dec 2016

We are so thrilled that we picked John Cotner to build our house. The quality and attention to detail was the major reason we chose John Cotner Builders. The professionals we worked with were polite ... Read More

Bryan Sweesy
Relationship: Client
Project Date: Nov 2015

John Cotner is extremely professional and knowledgeable. We found our building experience to be very smooth. The finished product is absolutely amazing. Much nicer than anything we could have im... Read More

JasonCrystal Warriner
Relationship: Client
Project Date: Apr 2016

We are so glad we used Cotner Building Company to build our home. John was very organized from the planning phase to our move-in inspection. John communicated very well and made what could be a very... Read More

Sharon Frost
Relationship: Client
Project Date: Apr 2016

Enjoyed working with John and his subcontractors. John is a man of his word, easy to work with and respectful of what you want. He answers phone calls and texts within in a few hours and takes care of... Read More

Relationship: Client
Project Date: Mar 2013

john cotner is a professional. he brings communication to the job everyday and keeps his clients apprised always. he uses excellent contractors and requires respect from the when they are interacting ... Read More

Natalie Wilhite
Relationship: Colleague
Project Date: Nov -0001

I have been a real estate agent in the treasure valley for over 20 years. I have enjoyed working with John Cotner and his family for about 10 years. He has prevailed through the tough years with integ... Read More

Relationship: Client
Project Date: May 2014

John was recommended to me by a large local builder. John and I communicated via phone and email. I was living in CA at the time. After evaluating my plans John and I entered into a contract to bui... Read More

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State of Idaho Energy Star Builder of the Year
Numerous Parade of Homes awards
Building Contractors Association Builder of the Year