A backyard party porta potty keeps guests out of your house and your home septic or sewer line happy.
Reviewed by Danielle, owner · Updated
A backyard party porta potty keeps 50 or more guests from walking through your house. That means fewer muddy floors, no line at the hall bathroom and less strain on a septic tank. Rural homes in Kuna, Star and Middleton on septic benefit the most.
Most homes have 1 or 2 bathrooms. A party of 75 guests can make a line in the first hour.
Plan 1 standard porta potty for every 50 guests at a party up to 4 hours. For 4 to 8 hours, divide guests by 40. Add 1 unit for every 4 units when alcohol is served, with at least 1 extra. Round up every time.
| Guests | Up to 4 hours | 4–8 hours | 4–8 hours with alcohol |
|---|---|---|---|
| 40 | 1 | 1 | 2 |
| 75 | 2 | 2 | 3 |
| 100 | 2 | 3 | 4 |
| 150 | 3 | 4 | 5 |
This is our recommendation based on industry sizing charts, not a law. Mostly women or kids? Add 1 unit for every 4. Try the porta potty calculator guide for longer events.
A standard porta potty is about 44 to 47 inches wide. That is too wide for a typical 36-inch side gate. The unit needs an opening of at least 48 inches. Otherwise, the driveway or side yard works well, within about 30 feet of the truck.
Measure the gate before you book. Many Boise subdivisions have 36-inch or 42-inch gates on the side yard.
| Unit | Width | Needs opening of |
|---|---|---|
| Standard (PolyJohn PJN3) | 43.5 in | 48 in or more |
| ADA (We'll Care III) | 85.2 in | Driveway or open yard |
| 2-station hand-wash | 26.5 in | 36 in gate works |
The driver moves the unit with a dolly on firm ground. Soft lawn after watering can stop a dolly, so skip the sprinklers the night before.
Put the backyard porta potty on level ground, 15 to 20 feet from food and seating. Face the door away from the crowd. A spot near the driveway or a side fence works well. A porch light or string lights help guests find it after dark.
A unit on the street or sidewalk needs an ACHD permit in Ada County. Read the Boise porta potty permit guide for details.
A standard backyard party porta potty starts at $175 for the first unit and $135 for each additional unit. A two-station hand-wash station starts at $125. Delivery and pickup are included in Zone 1, which covers Boise, Meridian, Nampa, Eagle, Kuna, Star and Garden City.
Prices are before 6% Idaho sales tax. There is no daily or hourly charge. A Saturday party with Friday drop-off and Monday pickup costs the same as a 3-hour event.
| Setup | Starting price |
|---|---|
| 1 standard unit | $175 |
| 2 standard units | $310 |
| 2 standard units + hand-wash station | $435 |
| 1 deluxe flushing unit with sink | $295 |
Cancel free up to 24 hours before delivery. See the full porta potty rental cost breakdown.
To book a home party porta potty, send the date, guest count and address. Add a note about the gate or driveway. Booking 1 to 2 weeks early holds summer Saturdays. Same-day delivery in the Boise metro works when you call before noon, for a $95 rush fee.
You do not need to be home for delivery. Leave a note, a chalk mark or a photo of the spot.
See event porta potty rental for unit choices. For an older crowd, step up to a deluxe flushing porta potty.
One standard porta potty covers about 50 guests for a party up to 4 hours. For a longer party or one with beer and wine, add a second unit. Your home bathroom can serve as a backup for older guests.
Event rentals drop off up to 1 business day before and pick up the next business day after. A Saturday party usually means Friday drop-off and Monday pickup. There is no charge for the extra days.
You do not need to be home for delivery. Mark the spot with a flag, chalk or a cone, and add a note about pets or gate codes. The driver places the unit and sends confirmation.
A deluxe flushing unit has a recirculating flush and a fresh-water sink inside, starting at $295. For a larger or dressier party, a restroom trailer with real porcelain toilets starts at $1,195.
An ADA wheelchair-accessible unit has a ground-level floor and a 60-inch turning circle. Event pricing starts at $235. The unit is about 85 inches wide, so it needs an open driveway or yard spot.
Official sources: ACHD permits and approvals · PolyJohn PJN3 standard unit specs
Tell us the address, dates and head count. You get one itemized price on the spot, and the unit can be on site today.
Prefer to type? Send the form and we call you back within 30 minutes during business hours.
⏱ Same-day cutoff: 12:00 PM MT