How can I stop people from breaking into my building, nobody lives there and I'm trying to sell the place.

Question

I've boarded the windows up already and they used crowbars to get in through the doors. I really can't board the doors up because people need to be able to get in to see the property. Is there anything I can do? Or does anyone have any suggestions? I didn't know where else to ask this.

Answer 1

you can rent a tattle tale alarm from any mobile office rental.

it has its own cell phone, batteries, and motion detector.

you  set it up, turn it on and leave. if anyone moves in the room without the code it calls the monitoring agency to call the police. after a few arrests they will stop, or vandalize the outside. @$#$# kids

Answer 2

I would suggest a more robust lock, and sliding bolts that can be padlocked.