Although the design and layout of bathrooms we use nowadays date back millennia, they are still considered as one of the most difficult to design and renovate. During the earliest stages of planning a bathroom, there are plenty of rules of thumb to follow, especially since it involves a lot of association and “pre-planning” with plumbing, electrical circuits, angular or uniquely-shaped fittings, and small floor areas. We will explore the basics of bathroom plumbing and where to allocate each fixture to optimize the bathroom's layout, facilitating your DIY remodel project or creating the space from scratch.