Your association should have trespassing signs posted by the entrances to your community. You can advise homeowners to call 311 for assistance with the police department to remove trespassers from the community. You may consider hiring a security service to patrol the community, even if it is just a roving guard that comes through the community during a 24-hour period to remove the transients prior to them calling the police department for assistance.
Search results for:
Homeowners should absolutely avoid beginning an architectural project unless they receive written approval from their HOA board. When you don’t receive a formal written approval, unwanted consequences occur.
Since the roof is “shared” by seven other owner you may be restricted as to the installation of the solar panels.