Smoke Alarms have been required per the International Residential Code since the 1970's, however, Carbon Monoxide (CO) Alarms have only been indroduced as a requirement since 2006 and are manditory as of the 2009 edition of the IRC. Local Building Codes and/or the local Building Offical's mandates can supersede the IRC. So make sure if your doing extensive rehabbing or adding onto an existing structure, that you follow the appropriate guidlines for insuring your investment property is safe for renters or for re-sale.
If you would like the chance to work with me or one of my fellow real estate investor coaches and our advanced training programs, give us a call anytime to see if Dean's Real Estate Success Academy and our customized curriculum is a fit for you. Call us at 1-877-219-1474 ext. 125