There were two types of sales-construcion system.
One group adopted ‘direct system’ that was done by the enterprise itself.
The other group adopted ‘agency system’ that was done by agencies, .
The selling, general and administrative expense ratio of the enterprises that adopted ‘agency system’ was higher than the one of the enterprises that adopted ‘direct system’ .
This study aims to research the reason why the management of the enterprises that adopted ‘agency system’ went well from the 1980's to the mid 1990's despite the fact above.
The result is that the enterprises adopted ‘agency system’ developed Pre-designed House that acomodated to ‘agency system’.