Contact Us

A bench on campus in the UCD Arboretum

Office Hours



207 3rd Street, Suite 210
Davis, CA 95616


4800 2nd Avenue, Suite 2300
Sacramento, CA 95817

Monday-Friday 8am-5pm
Closed weekends and university holidays




Phone Numbers

It is important to note we likely are not in the office and we will not be able to answer your call. Please leave a message and an HDAPP representative will call you back. 
  • Mainline: 530-747-3864

  • Anonymous Call Line: 530-747-3865 

Our Staff

For more information, here is our organizational chart.