Complaint about tenant noise

[John Smeltzer]

Wondered if anybody had a similar situation and have any suggestions on how to handle. I have a condo I bought 3 years ago for purposes of renting it out. The previous owner used it sparingly (maybe 7 weekends a year). The first tenants I had were harassed by the neighbor next door for making too much noise. I engaged an attorney to write a letter to the property manager which didn't do much good. I believe the HOA Board saw the letter but did nothing. These tenants moved out.

New tenants moved in for a year and we had no complaints (or at least they didn't voice any complaints).  These tenants moved out and new tenants moved in.  I have the same problem again with this neighbor harassing them.  I was willing to believe that in the first case, it could be my tenants making excessive noise.  Now with the same thing happening again, I believe it's the neighbor.  He was used to living there with nobody next door, and now people live there.  When you live in a condo, you have to expect you're going to hear some noise from neighbors.

I plan to go to the HOA President to voice a complaint and am checking to see if I can add some insulation to the wall between the two condos. Short of those two options, does anybody have any suggestions or solutions?