To provide a process management system for constructing housings by which process management data can be rapidly and easily prepared and searched.

Customers date such as names, addresses, etc., of customers requiring to construct a house are stored in personal computers 4, 5 and date data of respective processes such as a contract date, previous meeting dates, a commencement date of work, a setting-up date of the framework of a house, etc., are stored in the personal computers 4, 5 correspondingly with the customer's data at every customer to constitute a data base in which a number of process management data including date data corresponding to customer's data are collected. Required process management data of a customer are searched through the personal computers 4, 5 and shown on a display.