I'm not a legal professional, and I can't provide legal advice as each town and city may have different regulations. However, I can share our personal experience. Our property was trespassed by the city, and initially, we were unaware of our options. It's important to note that you can take action in such situations. Contact the police and report the incident because generally, nobody is allowed on your property without a valid reason, such as imminent danger. As a property owner, you have the right to ask them to leave.

In our case, we learned about these rights after the incident. We reported the trespassing to the police and also addressed the issue by writing a letter to the city manager and the head of code enforcement. Additionally, conducting thorough research is crucial. Obtain public records related to city activities before the trespassing incident, including emails and text messages mentioning your property. This information can be valuable when pursuing legal actions.

It's important to stand your ground, as they may claim they had the right to trespass. However, in most cases, they require your permission or a search warrant, similar to any other law enforcement agency.
This is part of your Fourth Amendment rights.
https://www.avvo.com/legal-answers/ca...
What I googled was can code enforcement come on my property when I am not there or without my permission.