Next to the church, at the crossroads of Degučiai, Stubriai, and Mediškiemiai roads, the market square was established with trading rows. In 1906, paving with stones began. The square was surrounded by ornate brick buildings, 1 to 3 stories high.
In the postwar years, the surrounding homesteads were completely destroyed, and the old brick buildings began to deteriorate. Nevertheless, they withstood many years of Soviet neglect and disorder.
After 1990, Katyčiai continued to decline. During the years of independence, the three-story buildings in the square were abandoned and later demolished. Only in 2005 was the historical part of Katyčiai included in the Cultural Heritage Register of the Republic of Lithuania—without specifying its value.