Do You Need a Permit for a Porta Potty in Maryland?
Most porta potties on private property need no permit. Public streets, sidewalks, parks and public events are different. Here is how it works on the Eastern Shore.
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Do you need a permit for a porta potty on private property?
A porta potty on your own private property in Maryland or Delaware does not need a permit in most towns. That covers backyards, driveways, farms and job sites inside the property line. HOA covenants can still limit where a unit stands, so check them for longer rentals.
The exception is a unit that crosses into the public right-of-way: the street, the sidewalk or the strip between sidewalk and curb.
When does a porta potty need a permit?
A porta potty needs approval when it sits on a public street, sidewalk or right-of-way, or when it is part of a public event on town or county property. The restroom plan is then part of the event or right-of-way approval, not a separate toilet permit.
- Block parties and street festivals
- Events in town or county parks
- Races and parades on public roads
- Contractor units placed on the street because the lot has no room
What does the City of Cambridge require for event toilets?
The City of Cambridge special event application asks whether portable toilets will be provided and where they will stand on the event map. The application is due 60 days before an existing event and 120 days before a new event, and needs a certificate of insurance.
Source: City of Cambridge Special Event Application (checked October 2026). Events on the roadway must also keep a 20-ft emergency access lane, so plan unit placement off that lane.
How many units does a permitted event need?
Permit offices look for enough units and at least one wheelchair-accessible unit in each cluster. The 2010 ADA Standards set the accessible minimum at 5% per cluster. For totals, plan 1 unit per 50 guests for up to 4 hours and 1 per 40 for 5 to 8 hours.
Use the porta potty calculator and put the result on your event map.