If you neglect this part of the project or intentionally choose the cheapest option available you will do so at your own peril. Without fail, when I have seen clients skimp on the installation two things happen. First, the actual cost is more than the cost of the installation itself because cabinets and parts are damaged, cut wrong, lost or installed incorrectly and more material needs to be purchased. This causes lost time and money. Second, remember, your kitchen is the main working room in your house and without it life becomes more difficult. As an example, how do you put a value on losing a week in your project schedule because the installer made a mistake? How many more meals out will you need to pay for because your kitchen is still not functional? How do you put a value on the family tension that the delay causes? No matter who you choose to hire to install your cabinets, make sure they are insured and licensed and get a fixed price proposal or a firm estimate before the work begins. A good installer can make a moderately priced kitchen look great and a poor installer can make an expensive cabinet installation look terrible.