The Clackamas area runs from the older Sunnyside and Mount Scott neighborhoods to the subdivisions that filled in around I-205 and the Town Center. In the older pockets, a mid-century home is often on an overhead service to a mast with a smaller panel, where the mast, meter base, and grounding may all be due along with the box. In the newer subdivisions, underground service and 200-amp panels are the norm, so the work is lighter and more about capacity. We read which you have before quoting.
Your power comes from Portland General Electric, so a heavier service is coordinated with PGE at the meter. Because the Clackamas community is unincorporated, there is no city building department in the loop: electrical permits and inspections go directly to Clackamas County, and by state law the work cannot begin until the county issues the permit. We line up the PGE disconnect and the county inspection around the swap.