The clients pay flat fee tend to make more design changes and ask for more intense shop-arounds. Don’t blame them, cuz it’s free!!
Changing approved designs, especially during Contract Document phase can be really counter productive which also means the disasters waiting to happen. Changing approved designs for accommodating job site condition is understandable, but changing designs just for change’s sake can be very annoying and time consuming. Charging hourly serves as a mechanism to discourage the indecisive clients making constant design changes. Without this mechanism, the designers will always work on repeat tasks which can lead to overtime working easily. For those clients who like you to compare prices with 10 different vendors just for one single piece of furniture, charging hourly rate can also remind them not to try to save a dime but end up spend a dollar.
At last, charging hourly rates will force you monitoring yours and your employees’ time better and making sure the time is efficiently spent. Thus, good for your own wellbeing and time management skill.