How many people can a 4 stall restroom trailer handle?
Four stalls means four separate private rooms, usually split so guests aren't waiting on one shared line. For a wedding or graduation party in Tacoma running four to six hours, that's plenty for 150 to 250 guests. Longer events change the math. A full weekend festival pushes closer to the lower end of that range because the trailer sees more total visits per stall. If your guest count runs higher, step up to an 8 stall restroom trailer instead of overloading a 4 stall unit. For smaller backyard gatherings, a 2 stall restroom trailer or even a standard porta potty rental might cover it for less. Construction crews sizing sanitation to headcount instead of comfort should check OSHA Portable Toilet Requirements and the guide on how many porta potties do I need, since OSHA 1926.51(c) sets ratios by worker count, not by trailer size.
What comes inside a 4 stall restroom trailer?
Expect running water, flushing toilets, and interior lighting, closer to a real restroom than a standard portable toilet rental. Compare that to a deluxe flushable porta potty if you want flushing without the trailer footprint or budget. Handwashing is built in, which matters more than people think: 29 CFR 1910.141(d)(2) requires soap and a way to dry hands, and hand sanitizer alone doesn't satisfy that standard. If your event involves food service or any painting, staining or pest treatment on site, OSHA 1926.51(f)(1) requires washing facilities for workers handling those materials specifically. Need an accessible stall in the mix? ADA Standards section 213.2 calls for at least one accessible unit in any cluster, and our ADA accessible porta potty page covers what that unit needs, including a 60 inch turning circle under ADA 304.3.1 and a 32 inch door opening under ADA 404.2.3. Full ADA planning details live at ADA Restroom Requirements.
Where can a 4 stall restroom trailer be placed on site?
The trailer needs a level parking spot and, for hookup models, access to water and power nearby. Gravel lots, paved driveways and mowed fields all work if they're flat. Delivery trucks need clearance to back in and level ground to unhitch, similar to the 60 feet of straight clearance a roll-off dumpster rental needs behind it. Placement in the public right of way in Tacoma needs confirming with the city before you commit to a spot on a street or sidewalk. For venues without existing hookups, ask about a generator or a temporary power pole, and pair the trailer with a light tower rental for evening events. See the Porta Potty Placement Guide for surface and slope details, since ADA 302.1 also requires stable, firm, slip resistant ground for any accessible route.
| unit | duration | low | typical | high |
|---|---|---|---|---|
| trailer | day | 175 | 800 | 2500 |
| trailer | week | 150 | 1397 | 1650 |
| trailer | weekend | 900 | 2000 | 3000 |
| trailer | event | 2499 | 3500 | 3899 |
Weekend rates for smaller trailer configurations can run lower than the weekend figures above depending on stall count and hookup needs, so ask for a quote matched to your date. For full breakdowns by rental length, see Restroom Trailer Rental Cost or the general porta potty rental cost page. Comparing this to daily porta potty pricing? Check porta potty rental per day.
Tacoma sits within easy delivery range of Fircrest, 4.1 miles southwest, and University Place, 6.8 miles southwest, so trailers booked for events in either town still fall inside a normal service window. Fife, 7.2 miles east, and Lakewood, 9.3 miles southwest, are also common delivery stops for Tacoma-based events. If your event needs showers too, look at a shower trailer rental, or step up to a luxury restroom trailer for weddings and corporate functions. See the full Restroom Trailer Rental page for every size option, or browse Service Areas for coverage beyond Tacoma.
How far in advance should I book a 4 stall restroom trailer in Tacoma?
Two to four weeks ahead is safest, especially for weekend weddings or festivals when trailers book out fastest. Peak summer season in Tacoma fills faster than winter. Emergency needs still get handled through Emergency Porta Potty Rental when timelines are tight.
Does a 4 stall restroom trailer need a generator?
Only if the site has no power hookup nearby. Most trailers run lighting, water pumps and climate control off standard power, so confirm hookup type when booking. A temporary power pole solves this for sites without existing electrical access.
Can I rent a 4 stall trailer for a construction site instead of an event?
Yes. Job sites often prefer trailers over standard units for worker comfort on longer projects. Pair it with construction site services and check OSHA 1926.51(c) ratios to confirm stall count matches your crew size.
What size trailer do I need for a wedding at 200 guests?
A 4 stall trailer generally handles 200 guests for a single reception. For larger weddings or if the event runs past six hours, consider the 8 stall restroom trailer or check wedding restroom rental for planning specifics.
Is a 4 stall restroom trailer ADA compliant automatically?
No, accessibility depends on the specific unit and hookup. ADA Standards section 213.2 requires at least one accessible unit in a cluster. Ask Tacoma Porta Pros to confirm which trailer models meet that standard before booking.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.