Price, terms, location, condition, all factors. Be sure to evaluate the ROI on the home. Will you be living in one of the units? If so, laws differ. I own two properties, both about 15 minutes from my home. I prefer to manage my own business because no one has as vested an interest in success as I do. I have not found safety to be an issue at all however, you can help yourself by doing your due diligence and screening the applicant and taking full security deposit. Feel free to call if you have questions, I'm happy to help.