The head of the home bar needs 1.8 meters. The width should be at least1.2m and the height should be at least 90cm.. And the height of the bar has two sizes, the height of the single-layer bar is about 1 10 cm, and the height of the upper and lower double-layer bars is about 80 cm to 105 cm. And the gap between them should be at least 25 cm, so that items can be placed on that floor. The depth of the countertop must depend on the function of the bar. The width of the countertop required for drinking only or dining is different.