| Construction | Structure | Plan/floor (m2) | Heating/Cooling | |
| Hokkaido 1 | 1988 | Wooden beam and pillar | 4LDK/164 | Fuel heater/no cooling |
| Iwate 1 | 2003 | Wooden beam and pillar | 4LDK/133 | Electric heater with brick storage/heat pump |
| Miyagi 1 | 1986 | Wooden panel | 3LDK/100 | Fuel heater/heat pump |
| Miyagi 2 | 1979 | Steal frame | 4LDK/105 | Fuel heater without exhaust system/heat pump |
| Kanagawa 1 | 1986 | Steal frame | 4LDK/108 | Fuel heater without exhaust system/heat pump |
| Kyoto 1 | 1999 | Steal frame | 3LDK/132 | Heat pump/heat pump |
| Nara 1 | 2001 | Steal frame | 2LDK/115 | Fuel heater/heat pump |
| Osaka 1 | 1991 | Steal frame | 5LDK/196 | Gas heater without exhaust system/heat pump |
| Ehime 1 | 1995 | Wooden beam and pillar | 3LDK/138 | Fuel heater without exhaust system/heat pump |