Economic Analysis for Setting Appropriate Repair Cycles on the Fixed Materials and Facilities in the Public Rental Housing

Table 5

Summary of economic evaluation results for changed repair cycle items (11,912 households).

Target part	Evaluation item	Repair cost ()
		Conventional repair cycle (20 years)		Changed repair cycle
		Conventional method	Optimal repair method	Conventional method	Optimal repair method	Changed repair cycle
Bathroom	Bathroom door	9,177,682	9,045,596	9,177,682	9,045,596	20 years
	Remodeling	94,160,923	37,830,237	94,160,923	37,830,237
	Floor tiles	9,171,350	3,222,461	9,171,350	3,222,461
	Leakage repair	29,810,096	21,052,841	29,810,096	21,052,841
Entrance	Floor tiles	7,583,282	1,363,654	7,583,282	1,363,654	20 years
Furniture	Shoes cabinet	10,325,546	3,759,725	10,325,546	3,759,725	20 years
Common facilities	Nonslip	37,436,002	20,472,941	37,436,002	20,472,941	20 years
Subtotal	7	197,664,881	96,747,455	197,664,881	96,747,455	20 years
	Unit household	16,594	8,122	16,594	8,122
Doors and windows	Front door	19,388,825	10,771,419	21,683,136	11,929,856	25 years
	Small room door	13,946,158	7,240,455	15,565,849	7,697,631
	Main room door	23,211,581	15,229,820	25,653,258	16,850,550
	Sliding door (in)	31,763,774	25,203,459	35,714,809	28,210,563
	Sliding door (out)	33,421,573	25,181,692	39,775,803	27,847,046
Balcony	Floor tiles	8,689,724	3,587,109	10,305,476	3,972,786	25 years
Subtotal	5	130,421,635	87,213,954	148,698,331	96,508,432	25 years
	Unit household	10,949	7,322	12,483	8,102
Doors and windows	Small room window	14,848,889	10,767,672	18,097,917	12,080,971	30 years
Subtotal	1	14,848,889	10,767,672	18,097,917	12,080,971	30 years
	Unit household	1,247	904	1,519	1,014
Total repair cost	13	342,935,405	194,729,081	364,461,129	205,336,858	—
	Unit household	28,789	16,347	30,596	17,238