Are You Interested in Building Something Big This Year?

Why work at J.W. McClanahan? For more than 80 years, JWM has prioritized people over profits, and has invested heavily into our team members. If working in a supportive environment with family-friendly policies sounds too good to be true, take a closer look at joining the team at JWM.

10 Stories on 10th and O: A State Office Building Comes to Life

California state government workers needed somewhere to work while the Capitol Annex was being renovated. The solution was a 10-story building with space for offices, meeting rooms, hearings, caucuses, and integrated parking. Learn how the plumbing and piping experts at JWM helped create a beautiful, efficient and award-winning office building.

Our Look Has Changed, Our Excellence in Plumbing Solutions Remain

At the end of the day, we know that for our brand what matters most is we deliver on our promise of high-quality service and a team that is focused on partnership. We are in the plumbing and piping business, but our purpose is fulfilling the promise of making people’s lives better.

Herlong Federal Correctional Institution

The medium security Federal Correctional Institute (FCI) facility near Herlong, California is $120 Million design-build facility that includes 23 buildings with 636,000 sq feet of structure. The structure called for 312,000 sq feet of exterior site-cast wall panels

Department of State Hospitals-Coalinga

Department of State Hospitals – Coalinga is a 1,500-bed psychiatric hospital for repeat sexual offenders who have completed their prison sentence and have been committed for extended treatment. The maximum-security facility combines internal and external security with community oversight to meet the community’s needs.

140 New Montgomery St.

Remodel of the San Francisco’s historic Pacific Telephone and Telegraph building office built in 1925.

Facebook Park Tower

Design-build plumbing for the 43-story Facebook-leased building in San Francisco.

Apple’s Wolfe Campus

Worked on 2 buildings, both with 2 levels of podium parking and 4 levels of office space.

UC Berkeley SAHPC

Plan and spec plumbing for Cal’s 142,000-sq.-ft. student athlete training center.