Secure America's Homes and Businesses Act of 2005 - Amends the Internal Revenue Code to allow a tax deduction for the cost of purchasing and installing a qualifying electronic premise security system in a residence or business. Defines "qualifying electronic premise security system" to include: (1) electronic fire or life safety devices, intrusion detection alarms, and other buglar alarms; (2) video surveillance cameras; (3) access controls, including biometric controls and automated fingerprint identification systems; and (4) equipment incidental or necessary to the installation or operation of such security systems. Limits the amount of such deduction to $5,000 for residential and $50,000 for commercial security systems.