It is unlawful for a person to knowingly trespass upon the property of another. As used in this section, the term “property” includes any land, dwelling, building, conveyance, vehicle, or other temporary or permanent structure whether publicly or privately owned. The term “trespass” means one or more of the following acts:
(Code of Iowa Sec. 716.7 and 716.8)
1. Entering Property without Permission. Entering upon or in property without the express permission of the owner, lessee, or person in lawful possession with the intent to commit a public offense or to use, remove therefrom, alter, damage, harass, or place thereon or therein anything animate or inanimate.
(Code of Iowa, Sec. 716.7[2a])
2. Entering or Remaining on Property. Entering or remaining upon or in property without justification after being notified or requested to abstain from entering or to remove or vacate therefrom by the owner, lessee, or person in lawful possession, or by any peace officer, magistrate, or public employee whose duty it is to supervise the use or maintenance of the property.
(Code of Iowa, Sec. 716.7[2b])
3. Interfering with Lawful Use of Property. Entering upon or in property for the purpose or with the effect of unduly interfering with the lawful use of the property by others.
(Code of Iowa, Sec. 716.7[2c])
4. Using Property without Permission. Being upon or in property and wrongfully using, removing therefrom, altering, damaging, harassing, or placing thereon or therein anything animate or inanimate, without the implied or actual permission of the owner, lessee, or person in lawful possession.
(Code of Iowa, Sec. 716.7[2d])
None of the above shall be construed to prohibit entering upon the property of another for the sole purpose of retrieving personal property which has accidentally or inadvertently been thrown, fallen, strayed, or blown onto the property of another, provided that the person retrieving the property takes the most direct and accessible route to and from the property to be retrieved, quits the property as quickly as is possible, and does not unduly interfere with the lawful use of the property.
(Code of Iowa, Sec. 716.7[3])