JH Kelly has grown into one of the largest industrial mechanical contractors in the nation - and although the organization looks different from when Jack Kelly, Sr. first opened its doors in 1923, one thing still remains: the trust built on the job is the lasting measure of success.


JH Kelly is a fourth generation, family-owned construction firm that provides mechanical services to commercial facility owners while also acting as a self-performing industrial general contractor at process plants throughout Washington, Oregon, Idaho and Montana. JH Kelly brings together great people and their abilities to plan and execute challenging projects, and the result is a loyal customer following.



Over the past 90 years, we have been fortunate to grow our business from a just dozen plumber shop in Longview, WA in 1923 – to over 1,000 craft and salaried employees today.

Our company evolved by completing round-the-clock shutdowns at paper mills along the Columbia River and tackling tough turn-arounds for refineries in northern Washington and Montana.

We have grown alongside the industrial and commercial markets and we’ve invested heavily in piping and electrical fabrication facilities, giving our company an edge in the marketplace.



821 Third Avenue / PO Box 2038 / Longview, WA 98632T 360.423.5510 / F 360.423.9170 / mail@jhkelly.com