Back yard with boat dock -- safety?

[Maria G.]

Hello,

I just put a lake house on the rental market and someone wrote with the following request:

"Would the owner be willing to put a fence out on the patio for tenants that have kids in the home or be willing to allow a small fence around patio area for safety?"

I would think that they can put anything they won't as long as it can be removed without leaving trace when they vacate the property.

Another concern is whether I can be responsible for any safety accidents.

Thanks!