It depends on who controls the location and how complex your shoot is.
For National Park Service areas connected to Philadelphia history, permits and fees generally are not required when the session involves eight or fewer people, uses hand-carried equipment, stays in public areas, doesn't require exclusive use, doesn't disrupt visitors, and doesn't create extra administrative costs, according to
The National Park Service website.
In practice, a small portrait session is very different from a styled production. Permit questions are more likely if you have a large crew, lighting stands, wardrobe racks, props, amplified sound, blocked walkways, or a need to clear people out of the frame.
Use this rule of thumb:
- Federal historic sites: Check the rules for that specific park or site
- City property: Don't assume federal rules apply
- Museums and cultural institutions: Many have their own photo policies, even for outdoor grounds
- Private property: You need permission, even if the space feels public-facing
Before your shoot, make these three checks:
- Owner or operator: Confirm whether the space is city, federal, museum, private, or commercial property
- Actual setup: Be honest about your crew size and equipment
- Exclusive use: Ask whether your session requires reserved space or crowd control
If you're unsure, ask first. It's much easier to confirm the rule before the shoot than to be stopped after you have built your whole plan around one location. For a simpler alternative, many photographers skip the permit question entirely and
book a photo studio where the space is already yours.