No, all rooms in a house don’t have to match in terms of interior design. In fact, many homeowners and designers prefer to mix and match different design styles in different rooms. This can create a more interesting and unique overall look for your home. Additionally, it can also be more practical to have different styles in different rooms depending on their intended use. For example, you might want a more relaxed and cozy feeling in your bedroom than in your kitchen or living room. Ultimately, it’s up to you to decide what look you want for your home and which style works best for each individual space.