Boulder, CO Soliciting & Door-to-Door: No-Knock Registry (2026)

Section 4-10-2, 'Certain Sales Prohibited,' sits inside the same itinerant merchant chapter as Boulder's general door-to-door license requirement (Section 4-10-3), but it is narrower and carries no license cure: it flatly forbids the conduct rather than permitting it under a license. The section applies only to sales or solicitations for goods or services for delivery at a subsequent time when the seller requires a prepayment from the purchaser at a private residence, and only when the resident has not requested or invited the visit. A 501(c)(3) tax-exempt nonprofit is the sole class exempted from the prohibition; every other seller, licensed or not under Section 4-10-3, is barred from prepayment door-knocking without an invitation.

Boulder does not maintain a public no-solicitation registry or set citywide canvassing hours in this chapter; the legislative intent in Section 4-10-1 explains that prohibiting such door-to-door solicitations is necessary to protect residents from fraud and misrepresentation, specifically because prepayment schemes let a seller collect money and never deliver the goods. Because Section 4-10-2 operates as an outright ban rather than a licensing scheme, it stands apart from the itinerant merchant license process in Sections 4-10-3 through 4-10-8, which instead lets other door-to-door sellers operate under a displayed, two-year city license.

A resident who did not invite a prepayment solicitor may report the visit to the Boulder Police Department, and enforcement follows the same general municipal penalty that applies throughout the Boulder Revised Code.