Yes, a grading permit is required if you are grading more than 5,000 square feet of land or moving more than 100 cubic yards of soil. If you are grading in the public road rights-of-way, a street construction permit is required even if less than 5,000 square feet.
Depending on the size of the project, the response time to County comments and status of approvals from other agencies (M-NCPPC, PGSCD) is approximately 5 months. Expedited processing is available if permittee hires peer reviewers. Visit DPIE's website for more information regarding the Peer Review Program.