The three types of bathroom layouts are linear, L-shaped, and U-shaped. A linear layout involves placing the sink, toilet, shower, or tub in a straight line. An L-shaped layout places the sink and toilet on one wall, with the shower or tub on the adjacent wall. A U-shaped design sets the sink and toilet on one wall, with the shower or tub on the opposite wall and an additional vanity or storage area on the third.