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.


Carly Pannullo
Relationship: Client
Project Date: Jan 2018

John Cotner is a phenomenal builder and we love our new home. The communication was excellent and the detail to his work is second to none! I highly recommend John Cotner to build your dream home!! Read More

Lynn Diaz
Relationship: Client
Project Date: Mar 2018

John Cotner is the premier builder in Nampa, Idaho! Loved working with John from the design of the house to all other aspects of building our dream home. Enjoyed working with his design team from ... Read More

Jane and Joan The Golden Girls
Relationship: Client
Project Date: Jul 2018

John is a stickler for detail and is well versed with ageing in place construction. His contractors and project manager are helpful to work with and are all very good craftsmen. We particularly enjoye... Read More

Relationship: Client
Project Date: Dec 2018

John and Kristie Cotner have been wonderful and easy to work with, our home building process was nearly seamless. We highly recommend them! Read More

Marcee Dean
Relationship: Client
Project Date: Dec 2018

We are on the last phase of our build. It was been easy every step of the way. John is very organized and pays attention to detail. He is easy to work with as well as his sub contractors. Living in Po... Read More

Tammy Searles
Relationship: Client
Project Date: Dec 2018

Cotner Building (John & Kristie) did a great job on our custom home. I can't say enough about how easy they were to work with! The build was perfectly designed, scheduled, managed, and delivered on ... Read More

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

More Reviews 


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