All businesses interested in soliciting door-to-door in Castle Rock must apply for a Solicitor Registration License, per Ordinance 2013-43.
A solicitor is any person attempting to make contact with a homeowner with the purpose of selling goods or services at the point of contact, whether or not the goods or services are actually delivered at the time of sale.
No knocking restrictions
Municipal Code Number 5.04 prohibits solicitors from knocking on a door if:
The Town of Castle Rock "No Knock" sticker is displayed
There is any posted "No Soliciting" sign
The address is registered on the "No Knock" list, whether they have a sticker or not