Three main reasons: 1) to save money, 2) to save time 3) to provide you with the space you need. Just like any major investment, planning the details and making important decisions in advance can save you a lot of money. AH Design Studio specializes in analyzing cost-benefits of renovation, and ensure that the design solutions will almost always increase your property's value. In addition, an interior designer specializes in designing for function and ergonomics, meaning that a well designed space will likely be much more functional for the occupants than without a design professional’s input.