Dollhouses vary in scale and understanding the scale of a dollhouse impacts the type of furniture you purchase. The most common sizes for dollhouses​ include 1:6, 1:12, 1:16, 1:24, and 1:48. Some scales are more popular for collectors, while others are common for children's toys. Playhouses for young children are typically 1:12 scale, while fashion doll (Barbie) houses are usually 1:6 scale. The other sizes are usually aimed toward collectors.