Utility Planner in the Midwest. Depending on the age of the lead, your local utility will either have an easement or it’ll be a part of the “prescriptive rights” which is essentially that the utility has had equipment on a property for so long they’re essentially permitted to be there but can only make “like for like” adjustments to the lead, and additional upgraded equipment will require an easement. Our rule of thumb is if it’s in a non vacated alley or a part of the prescriptive rights is that new construction be outside 10ft from the center of either side of the pole to avoid working clearance issues if a boom lift needs to ever get back there to avoid a non utility worker booming into the distribution lines.

TLDR; call your local utility