Both facts matter if you are packing for a trip: the law is one thing, the kennel's requirement is the one your booking depends on.
The law and the kennel are two separate rules
Section 121690 tells dog owners to vaccinate against rabies and license the dog. It does not use the same language for cats. The California Department of Public Health notes there is no statewide requirement for cats and still recommends the vaccine, even for indoor cats. The kennel requires it. When you read the kennel's list, the cat requirement is a house rule that applies to every cat in the cattery, indoor or outdoor, young or old.
What a cat needs to board
Two vaccines: rabies and FVRCP, the combination that covers rhinotracheitis, calicivirus and panleukopenia. The cat must be at least 16 weeks old before the first day of the stay and have the vaccines recommended for its age. The records on file have to show both vaccines are up to date and will not expire before check-out.
How long a cat's rabies vaccine lasts
Feline rabies vaccines come as 1-year and 3-year products, your veterinarian chooses the product, and the certificate's expiration date is what the kennel checks. Check the expiration date on the certificate when you book, not on the day you pack. If it falls inside the trip, the booster comes first and the new certificate goes to the kennel.
An indoor cat still counts
An indoor-only cat is boarded in a cattery with other cats, in a building with doors that open for other people. That is why the requirement does not carve out indoor cats. If your cat has a medical reason that keeps it from being vaccinated, call 707-678-6600 and talk it through with the staff before you plan the trip. The cat rabies vaccine page goes into the details.
Sending the proof
Upload the certificate to your ProPetware account, email a copy, or bring one at the first check-in. Updated records after a booster are welcome at any time.