Yes, bathroom sizes can vary depending on where you live. While many places in the U.S. follow the guidelines set by the International Building Code (IBC), some states or local areas might have their own rules. These could include specific requirements for minimum bathroom sizes or how much clearance you need around fixtures. It's always a good idea to check with your local building authority before diving into a renovation project. That way, you'll know your bathroom is up to code and meets all the necessary regulations.