@pinkysonpatki6 - I have two heights of vanities. One was custom made by my father and it is shorter - its a box mounted on the wall. Its for a half bath. My other vanities are all the same height but mounted at different heights so the tops of the sinks are at counter height. All of my vanity sinks are different heights. Anywhere from a tall vessel to medium to low height ”drop in” to a regular ”drop in”. If all of my sinks were the same then each cabinet would have been mounted with the top at the same height on the wall. You don’t want a tall vessel mounted on a counter height cabinet as it very cumbersome to wash your hands, brush your teeth etc unless you are tall and I am not. I just measured the height of the top of the sinks in two of my baths downstairs and the top of the sinks are 37” above the floor. - a little more than counter height.
@pinkysonpatki6 - I have two heights of vanities. One was custom made by my father and it is shorter - its a box mounted on the wall. Its for a half bath. My other vanities are all the same height but mounted at different heights so the tops of the sinks are at counter height. All of my vanity sinks are different heights. Anywhere from a tall vessel to medium to low height ”drop in” to a regular ”drop in”. If all of my sinks were the same then each cabinet would have been mounted with the top at the same height on the wall. You don’t want a tall vessel mounted on a counter height cabinet as it very cumbersome to wash your hands, brush your teeth etc unless you are tall and I am not. I just measured the height of the top of the sinks in two of my baths downstairs and the top of the sinks are 37” above the floor. - a little more than counter height.
If I had to pick a number it would be 9 inches minimum.