@Jd Martin had a valid point which is that if someone gets harmed on the property, they are going after the landlord.

There's no harm in it the way there might be for a home sale.

You stack your house with junkies "who are harming no one", it starts to bring down the neighborhood.

But as one of the OP mentioned if your intention is to subdivide this and you have all these neighbors close to you.. then you need to go into mediation mode and make sure you have them as allies and not enemies they can cause you far more harm in the land use process than simply bugging you about walking on your property.. the cost of perfect some silly  right to walk on your property is far more than anyone is going to spend in the real world unless your land locking them.

Being listed as an additional insured does absolutely zero harm to you, however it does protect you in the amount of the liability coverage on that policy and it also pays all legal fees up to the point when the limits have been paid out on the policy or the claim is denied.

When tenants cross the line and use the "m" word, you send a notice that they move out effective immediately no harm no foul to protect themselves.  

What harm are the shelves doing.

The realtor is responsible for letting people in an making sure they don't do harm while there.

It is not about whether a specific dog WILL harm someone or cause damage, it is whether the animal CAN harm or cause damage.

Since you were able to replace them before you lost any rent, I'd put this one in the no harm no foul category and return their deposit.