The estimation system 10 includes a plurality of movement detection units MD1 and MD2, a usage detection unit UD, and a movement speed calculation unit 11. The movement detection units MD1 and MD2 detect movement of a resident in the residence and output a movement detection signal. The use detection unit UD detects the use of the resident's toilet room in the residence and outputs a use detection signal. The movement speed calculation unit 11 includes a detection time of the movement detection units MD1 and MD2 that output the movement detection signal one and two times before the use detection signal is output, and a predetermined distance between the movement detection units MD1 and MD2. The movement speed of the resident between the movement detection units MD1 and MD2 is calculated based on the distance information regarding the distance.
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