Assuming your new range is gas top and electric oven, and that there is already gas and 220v electric at the stove location, you should just need a plumber. The only electrical work that would need to be done in that case is to attach the correct plug to the stove to match the wall outlet, no license needed for that. If there is no 220v at the stove location (I.e. the previous range was all gas, not typical) then you will need an electrician, and it going to be a big job. If there is no gas pre-plumbed (I.e. Previous range was all electric, and the builder did not future-proof) then you are talking a major job, requiring permits and inspections.
The dishwasher should be pretty cut and dried, and require only a plumber. But I have heard that some brands have moved where you make connections requiring an electrician to come install a junction box and lengthen or relocate the pigtail.
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