No. Stone Interiors recognizes that being without a working kitchen for several weeks would be very difficult. Although it is more accurate to measure with the existing countertops removed, it is not mandatory.
However, occasionally the measurer will not see something that becomes visible after the existing countertops are removed. This may mean that a piece has to be remade or reworked. Stone Interiors will remake this piece at no cost to you. No financial compensation will be given due to delays in installation caused by measuring issues.
If you need to have your existing countertops removed, Stone Interiors offers this service for an additional fee. Partner with your Stone Interiors Representative to schedule the tear-out of your existing countertops.