What you can do is call the police should illegal activity be occurring on your property...make sure you can prove it so it doesn't appear retalitory. 

He has filing a police report for when the house was vandalized and needs to postpone closing (after stating he was backing out of the deal) due to insurance on the house but stating they are not fixing any of the damage.

No need to ask about a mower, just tell them taking care of the lawn is their responsibility.Regular furniture would also draw citations from the city.If they're being rowdy at 2:00 AM and disturbing the neighbor, the neighbors should call the police.

To address a homeless encampment, contact local authorities, inquire about community policing programs, collaborate with the HOA, and consult with city resources.

I think as development continues and your tax base increases you are able to reinvest in more community development and police officers, I think at that point it snowballs and continues to improve. 

Can you determine number of police calls to the location? 

Ok, in general, since police can call if there is a huge issue but could be abused by the city government to text or call someone when deficiencies are found at a property. 2.

Not partying, no hookers, drugs, no visitors and no police contact.

Also police and fire usage increases in an already strained system. 

Get the local police involved?