Canada Post can do mailings based on postal code or even streets so there's that tactic; you can send postcards/yellow letters to areas that are most likely to have motivated sellers.

The tax code is gray and not cut and dried .

Tenant shall maintain the Premises in aclean, presentable and safe condition at all times and in accordance with all health,safety and building code regulations.PUBLIC HEALTH(410 ILCS 82/) Smoke Free Illinois Act."

These are professionals with additional training and a stricter code of ethics.

According to Internal Revenue Code §168(e)(2)(A)(i), “residential rental property” means any building or structure if 80 percent or more of the gross rental income from such building or structure for the taxable year is rental income from dwelling units.  

These are professionals with additional training and a stricter code of ethics.

You have more of an argument for the other items since it could be argued they are code required / require specialized knowledge to analyze.Get quotes for the things you want to be corrected immediately and get a credit to closing.

Hi Lee, What is your credit score, purchase price, unit type (single family, duplex, etc), and property zip code? 

These are professionals with additional training and a stricter code of ethics.

My recommendation while you're in this stage is to educate yourself as much about the tax code as possible.