PT. Karyadeka Alam Lestari is the big developer in Central Java with "BSB CITY" project : residential, industrial park, commercial area, educational, and recreation.Total land development 1.000 ha, 16% of Mijen Sub-dictrictOn the height of 185-235 meter above the sea level with land slope ± 8%The temperature in BSB City is lower 1,2 °C than the city of Semarang.Housing consists of a simple house, medium and luxury.Industrial park developed with the concept of clean industry.