Smoke detectors built-in and connected so all go off together (big, well-insulated house-may not hear one going off ma distant room) with battery models as back-up

multiple fire extinguishers

Pool pump valved and connected to supply small fire hose with B/U genny power

Reinforced door hardware

Motion-sensing exterior lighting

TRAINED watchdog (not attack dog)

Roof reinforced against high wind (braced, screwed, glued)

Friendly with good neighbors

Stored food & water, survival gear, extensive first aid supplies

Stored repair, loss mitigation, clean-up, and salvage tools & supplies

Sufficient insurance

Well-laid, documented emergency plans


etc...

Jeff