Paramount, CA – CLOSED

Now serving you from our Pomona, CA, yard

J&B Materials – Pomona, CA

2340 South Mills Street
Pomona, CA 91766
PH: 909-591-1757
Hours: 5:30 am – 3:30 pm M-F

IMPORTANT: Serving You from Our Pomona Yard Starting 8/31/26

While our Paramount location has officially closed its doors on August 31, 2026, we remain committed to serving LA-area builders and contractors. Effective immediately, please pick up materials from our Pomona yard at 2340 South Mills Street. This location is equally equipped to provide you with the same great service you expect from J&B Materials.

Our sister company in the GMS Family, Westside Building Material, has a construction yard in Anaheim that's also a viable will call option for Paramount customers:

Westside Building Material – Anaheim, CA

1111 East Howell Ave.
Anaheim, CA 92805
PH: 714-385-1644
FX: 714-938-0730
Hours: 5:30 am – 5:00 pm M-F

New Facility Coming Soon

A brand-new, state-of-the-art J&B Materials facility is coming to the area this fall, so stay tuned for details! In the meantime, please don't hesitate to reach out to our team if you have any questions.

For LA’s Best Building Materials – Trust the Best

J&B Materials serves Southern California construction customers in the Los Angeles area. From our Pomona building supply yard on South Mills Street, we offer a diverse inventory that includes:

From Our Yard to Your Job

Building in SoCal? Our staff of experts bring decades of combined experience in the construction industry to help our customers find the exact products they need. Shop at J&B Materials in Pomona, CA, for construction supplies from the building industry’s best manufacturers.