20948 Knapp St.

Chatsworth, CA  91311


Main Office: (818) 700-3161


Hours of operation: Monday - Friday: 5:30 am - 3 pm 

Due to COVID-19 please call for the latest, up-to-date hours of operation




Westside Building Material in Chatsworth has moved to a new larger location (20948 Knapp St.) 1/2 mile from our previous yard. We provide unparalleled service to the construction trades specializing in acoustical, gypsum drywall, steel framing and related components.


Westside Building Material has an experienced sales team that will provide you with fast, courteous and accurate service. Our building material sales experience totals well over 100 years and our employees boast the most extensive technical knowledge in the industry.


In addition to this highly experienced group, our professional counter sales representatives, drivers and yard team provide the customer with the very best and most reliable service in the business.


We are conveniently located freeway close in the heart of the San Fernando Valley.



Get Driving Directions


Street View of Chatsworth Yard


Chatsworth Line Card


Chatsworth Credit Application


Price Change Notifications



Now Hiring

Outside Sales - Chatsworth



"...Long Beach Acoustics, Inc. has always been very satisfied with the service level of Westside Building Material...I look forward to continued business with them."


Frank Marpe


Long Beach Acoustics, Inc.