Re-key all door locks.
Consider a monitored alarm system with smoke detection.
Install outside flood lights with motion sensors.
Install smoke detectors no more than 15 feet from each bedroom and test monthly.
Install carbon monoxide detectors. Place in occupied bedrooms
Have a Fire Ladder available for 2nd floor bedrooms.
Keep a working fire extinguisher in the kitchen.
Know where to turn off Electric, Water, and Gas in an emergency.
Test water heater Pressure Temperature Relief Valve 2 times a year.
Clean wood burning fireplace chimneys as needed.
Have a working Flashlight available for power outages.