Living in a place with a limited amount of space may be acceptable for some time. However, we’ll promise you this much: It gets tiring after a while. Whether you’re adding or remodeling, you will want to make sure you’re getting a layout that won’t drive you crazy every single day. It is why there are some good rules of thumb when it comes to dimensions.  Our recommendation for half baths is to have minimum dimensions of 4 by 8 feet or 32 square feet for size. You may create something smaller by going down to 3 by 6 feet. It would effectively shave off roughly 43% of the square footage. You will more likely find yourself crammed in there by doing so. For a 3/4 bathroom, you will want a minimum size of 35 square feet. A popular option is dimensions of 6 by 6 feet, being a more common dimension. You will soon come to appreciate every single additional square foot you put in there.