A “Do Not Solicit” sign works by revoking the implied permission that normally lets any visitor walk up to your door. Once it is posted where a visitor can see it before approaching, commercial solicitors who ignore it can be fined under local ordinances or charged with trespass if they refuse to leave. It does not stop every visitor, though. Religious and political canvassers have stronger First Amendment protections, and government workers, mail carriers, and utility employees are not covered at all.
Why the Sign Has Legal Weight
Under property law, anyone walking up to your front door operates under an “implied license.” Your walkway, doorbell, and knocker signal that visitors may approach. That license is not unlimited. The Supreme Court has recognized that a homeowner can revoke it, and posting a sign is the most straightforward way to do that.1Cornell Law – Legal Information Institute. Martin v. City of Struthers, 319 U.S. 141
Without a sign, a door-to-door salesperson walking up your path is doing something the law presumes is allowed. With a sign, that same salesperson may be violating a local ordinance, and if they refuse to leave after you tell them to, they could face a trespass charge. The sign alone does not automatically trigger criminal liability everywhere, but it establishes the foundation for enforcement.
Who Has to Obey Your Sign
Commercial solicitors have the weakest constitutional protection and are the most clearly bound by your sign. Door-to-door salespeople, home improvement contractors, pest control companies, and anyone selling a product or service can be penalized under local ordinances for ignoring a posted sign. The Supreme Court has held that communities “that have found these methods of sale obnoxious may control them by ordinance.”2FindLaw. Breard v. City of Alexandria, 341 U.S. 622
Political canvassers, religious visitors, and charitable fundraisers sit in a grayer area. Their speech carries stronger First Amendment protection, and cities cannot require them to obtain a permit before knocking.3Justia Law. Watchtower Bible and Tract Society of New York Inc v Village of Stratton, 536 U.S. 150 Many local ordinances still require them to respect posted signs at individual homes and limit the hours they can call. Whether your sign stops a campaign volunteer or a religious visitor depends on how your city’s ordinance is written and how local courts read it.
Some visitors are exempt from solicitation rules regardless of what you post:
- Government officials on official business, such as census workers or code enforcement
- Mail carriers and delivery drivers performing their regular duties
- Utility workers with easement rights to reach meters or infrastructure
- Anyone you invited or already have a business relationship with
These visitors are not “soliciting” in the legal sense, and no sign changes their right to be there.
“No Soliciting” vs. “No Trespassing”
These two signs do different things, and many homeowners use the wrong one. A “No Soliciting” sign specifically targets people trying to sell you something, collect donations, or promote a cause. Its enforceability depends almost entirely on whether your city has an anti-solicitation ordinance. Where no such ordinance exists, the sign expresses a preference but may not carry any legal consequence on its own.
A “No Trespassing” sign is broader. It puts all uninvited visitors on notice that they lack permission to enter your property. If someone ignores a clearly posted “No Trespassing” sign and enters anyway, they may be committing criminal trespass even if they are not selling anything. In most jurisdictions, criminal trespass is a misdemeanor, with penalties that can include fines and short jail sentences.
Posting both is the strongest approach. The “No Soliciting” sign triggers your local anti-solicitation ordinance. The “No Trespassing” sign provides the broader legal backup. If you only want one, “No Trespassing” gives you more enforcement options in most places, though it may also discourage neighbors or delivery drivers you actually want.
How Local Ordinances Add Teeth
Your sign’s real enforcement power comes from your city or county’s anti-solicitation ordinance. Most municipalities have some form of solicitation regulation, and while the details vary, common features include:
- Requiring commercial solicitors to obtain a permit before going door-to-door
- Restricting solicitation to certain hours, typically no earlier than 9 a.m. and no later than sunset or 8 p.m.
- Requiring solicitors to carry visible identification
- Fines for violating any of these rules
Penalties for ignoring a posted sign or soliciting without a permit are set locally and differ significantly from one jurisdiction to the next. Some cities also maintain a no-solicitation registry: homeowners register their address, and the list is provided to anyone applying for a solicitation permit. Solicitors who knock on a registered address face penalties even without a physical sign. If your city offers one, it adds a layer of protection on top of what you post.
What to Do When Someone Ignores It
Calmly tell the person you have a no-soliciting sign posted and ask them to leave. Most solicitors comply at this point and the encounter is over. What matters legally is what happens if they don’t.
Once you have verbally asked someone to leave and they refuse, you have the clearest possible basis for a trespass complaint. Call your local police non-emergency line. Even where ignoring a “No Soliciting” sign alone is not a criminal act, refusing to leave private property after being told to go is trespass in virtually every jurisdiction.
Write down the date and time, a description of the person, any company they represented, what they said, and whether they left when asked. That information helps if you file a police report and is essential if the same company sends people back repeatedly. For aggressive or deceptive commercial solicitors, you can also file a consumer complaint with your state attorney general’s office; most AG offices collect these complaints to track patterns of predatory sales.
Where to Place the Sign and How to Word It
A sign only works if a solicitor sees it before reaching your door. Place it where someone approaching from the street or sidewalk will encounter it before they are already on your porch. Near the entrance to your walkway or on a gate is better than on the door, because by the time someone reads a door-mounted sign, they have already done the thing you are trying to prevent.
Use clear, simple language. “No Soliciting” is the standard phrase that matches most local ordinance language. Adding “No Trespassing” strengthens your position. Avoid cute or ambiguous wording like “Unless you’re selling Girl Scout cookies, go away.” Courts and police look for clear notice of the homeowner’s intent, and humor can undercut that. Keep the sign weatherproof, legible, and large enough to read from several feet away. A faded or unreadable sign weakens your argument that the solicitor was on proper notice.
Two Common Misconceptions
The federal Do Not Call Registry does not cover your doorstep. It applies only to telemarketing calls, and even then it exempts political calls, nonprofit solicitations, and surveys. Registering does nothing about someone physically knocking on your door.4Federal Trade Commission. The Do Not Call Registry For in-person solicitation, your posted sign and your local ordinance are the primary tools.
Separately, if a solicitor ignored your sign and you ended up buying something, federal law still gives you a way out. The FTC’s Cooling-Off Rule requires sellers making door-to-door sales worth more than $25 to inform you of your right to cancel within three business days, and to provide a cancellation form at the time of sale.5Federal Trade Commission. Cooling-Off Period for Sales Made at Home or Other Locations This right applies whether or not you had a sign posted, and if the seller failed to provide the required notice, the three-day window may extend further. If you signed a contract at your door that you regret, check whether you are still within the cancellation period before assuming you are stuck with it.