Contractual Assessment Districts (CADs) and Alhambra Valley Assessment Districts (AVADs)


A CAD is a financing arrangement that allows a group of neighborhood property owners to share the cost of planning, design, and construction to extend a new sewer to serve their parcels. 

AVADs are located upstream of the Alhambra Valley Trunk Sewer and are generally similar to CADs.

Participation in a CAD or AVAD is voluntary and participating property owners have the option to repay their share of the costs through annual assessments on their property tax bills.

Who can participate? 

A group of owners of at least 3 residential parcels

What can be financed? 

Design and construction of a new neighborhood sewer or sewer main extension


  • Costs financed over 10 years (for CADs) or 15 years (AVADs)
  • CAD participants receive a portion of CAD fees collected from subsequent connections made within 20 years  

To learn more about the program, please complete the form on our Permit Contacts page, or email us at