To provide a system which prevents unauthorized intrusion into a house.

A track record log representing use history of household appliances (lightings L1, L2, L3, ..., television sets TV1, TV2, TV3, ..., audio apparatuses AV1, AV2, AV3, ...) installed in the respective rooms A, B, C in the house 1, respectively is stored in a log storage means 41 of a home server 40. A sample pattern creation part 43 creates a sample pattern based on the track record log and stores it in a sample pattern storage part 42. When this household appliance control system is switched to a crime prevention mode by an operation panel 22, etc., a presence production system control part 44 acquires the sample pattern from the sample pattern storage part 42 and transmits control signals to each household appliance according to the acquired sample pattern.