From: Official website.

Q. How do I get a Concealed Weapons Permit?

A. To get a C.C.W. you must meet the following criteria:

· Proof of residency in the unincorporated area of Napa County or in the cities of American Canyon or Yountville.
· Complete an approved 16 hour C.C.W. course.
· Bring a current photo.
· Complete an application, which includes, personal and employment information, the description of weapons you intend to carry and have a VALID reason for wanting to carry a concealed weapon.
· Pay a fee of $117.00 valid for two years
· Be interviewed by the Field Operations Captain or the Undersheriff
· Have no criminal record
· Renewals are $62.00 every two years.
· Failure to renew on time will result in having to complete the full application process again.