Welcome to the Online Permit Center
Please Login
Many online services offered by Napa County require login for security reasons. If you are an existing user, please enter your User Name and Password in the box to the right.
Please Note: Our security password requirements have changed. If you are unable to login to OPC and receive Invalid Username or Password error,
please choose “forgot password?” to send a temporary password. Our requirements are listed below.
Minimum of 8 character(s)
At least 1 upper-case letter(s) (A, B, C, ...)
At least 1 number(s) (1, 2, 3, ...)
Must not contain the following:
Your user ID
The following characters:+,&,
New Users
Emails Sent From: Please be aware OPC will send emails from donotreply@countyofnapa.org. Please make sure to check your spam/junk folders. In addition, set the email address as Not Spam/Junk.