Which type of property must not have unfenced trampolines?

The assertion that properties with attractive nuisances must not have unfenced trampolines is rooted in the legal concept of "attractive nuisance." This doctrine pertains to property owners being held liable for injuries to children who may be attracted to certain features of their property that pose a risk, such as trampolines, swimming pools, or abandoned machinery.

Trampolines, due to their inherent risks and the fact that children are often naturally drawn to play on them, fall under this category. If a trampoline is unfenced, it increases the likelihood that children will access it without supervision, heightening the potential for accidents or injuries. Therefore, property owners are typically required to take precautions, such as installing fencing or safety measures, to mitigate risks associated with these attractive nuisances.

In contrast, the other types of properties listed, such as residential properties, commercial properties, and vacation homes, do not inherently carry the same legal burden under the attractive nuisance doctrine unless they also contain features deemed attractive nuisances without adequate safeguards. The distinction lies in the legal responsibilities attached specifically to those properties that have features likely to attract children, which makes the mention of attractive nuisances directly relevant in this case.