Standard vanity is 21" deep with a 22" countertop. Some are 18" with a 19" top, but you don't want that if you don't need it. It's hard to find an undermount sink and faucets that work with the 19" top. (We had no choice and managed but I wouldn't choose that route.)

I think the banjo top is the one that continues a narrower piece along the wall over the toilet. Not used as much as it used to be.

Cindy

Welcome bluekitobsessed from the kitchen forum! I'm doing my kitchen and nearby powder room at the same time. This forum will give you some great advice, just not as quickly as the kitchen forum. Maybe fewer are TBO than TKO. No, there is no finished bathroom blog or FAQ section, unfortunately.

The width of your granite could be a problem - 20" is shallow as cindy_socal stated. Maybe you can use one as a 4" backsplash (or larger!) paired with one on the counter and close the gap on the back side of the sink. Not sure how successful you could be with that, but possibly....it's gorgeous stone!!!

{{gwi:1386940}}

this is my powderroom vanity...about 19x20 if i remember right.

i love the idea of using the scraps. you should be able to find something other than the standard vanity like i did which will work :) a narrow dresser or side table, sewing machine table, etc. :)

The standard vanity depth is 21" with 22" countertop. Smaller depth countertops can be used, but you have to be a bit creative. Mine will be 18" vanity and 19" countertop. I am using a antique dresser. Your problem with less than standard depth is fitting a standard countertop mounted faucet in the middle behind the sink. Two ways to get around the problem: use a smallish sink and a single hole faucet mounted at "10:00" instead of the "12:00" of right behind the sink or use a wall mount faucet. I agree your stone is too gorgeous to waste.