Business tendency survey of constructing enterprises bas been conducted by Central Statistical Office since July 1993. The sample contains 3.5 thousand of public and private enterprises employing morę than 9 persons. Every month enterprises respond the ąuestionnaire concerning - among others - present and futurę economic situation, order books, value of production and financiai situation of the enterprise. There is also a bi-yearly iiwestment survey that was introduced in 1999. Both surveys are to be fully harmonised with the joint harmonised EU programme of business and consumer surveys sińce January 2003. They are partly financed from the funds of the European Commission according to the grant agreement signed in 2002. The results of the monthly survey are presented as a trend extracted with the use of the X11 Arima method. The results of the business tendency survey in constructing industry show the improvement of the business tendency till 1997 and its later stabilisation. In 1998 the broke of the pace of the increase was started followed by the regression of the business tendency. Since the beginning of 2002 the pessimism of the enterprises is less significant. Similar tendencies are noted for chosen variables for totals as well as for enterprises divided according to the sector of ownership or number of employees although the public enterprises are morę optimistic than private ones as well as the greatest enterprises (with 250 and morę employees) are morę optimistic than the smaller ones (with less than 250 employees).