What Is a 4 Stall Restroom Trailer?
It's a trailer split into individual stalls, usually with separate sides or a shared hallway, built for weddings, festivals, and multi-day construction jobs where a standard porta potty rental line starts to feel like a bottleneck. Downey Porta Pros sets these up for backyard weddings near the Rio Hondo, contractor jobs downtown, and weekend festivals across Downey. Compare it against a 2 stall restroom trailer if your headcount runs lighter, or step up to an 8 stall restroom trailer for anything past 150 guests. Each stall has its own door and lock, which matters more than people expect once a line forms. If you want a fully finished look for a ceremony or corporate event, ask about the luxury restroom trailer option instead. Need washing beyond the trailer's built-in sink for a job involving coatings or solvents? OSHA 1926.51(f)(1) requires washing facilities where employees are applying paints, coatings, herbicides or insecticides, so pair the trailer with a handwashing station rental on those jobs.
How Much Does a 4 Stall Restroom Trailer Cost in Downey?
Pricing depends on duration, and duration should match your event or project, not the other way around. Here's the breakdown Downey Porta Pros quotes most often:
| Duration | Typical Price |
|---|---|
| Day | 800 |
| Weekend | 2,000 |
| Week | 1,397 |
| Event rate | 3,500 |
Day rates run wide because setup, generator needs, and Downey delivery distance all shift the number. A weekend rental in nearby Bell Gardens, 3.1 miles northwest of Downey, or Pico Rivera, 5.5 miles northeast, ships the same unit but the delivery fee changes with the drive. For a general sense of what drives the spread across all trailer sizes, see restroom trailer rental cost or check porta potty rental cost if you're comparing against standard units. Multi-week construction jobs should look at monthly porta potty rental pricing for standard units instead, since trailers priced by the week rarely beat a month-long standard unit contract for a big crew.
Where Can You Place a 4 Stall Restroom Trailer?
Placement needs a level, stable pad and enough clearance for delivery. ADA Standards section 302.1 calls for surfaces that are stable, firm and slip resistant, which rules out soft lawn or loose gravel for the trailer's footprint. If accessibility matters for your guest list or your crew, ADA Standards section 213.2 requires that clustered portable units include at least one accessible unit, and a matching ADA accessible porta potty can sit alongside the trailer for guests who need a wider door or turning space per ADA Standards section 304.3.1. Downey Porta Pros checks the access route, since ADA Standards section 403.5.1 calls for a 36 inch clear path to the trailer door. Placement in the public right of way still needs confirming with the City of Downey before delivery day. For general guidance on positioning any unit relative to power, water, and guest flow, read the porta potty placement guide or start with restroom trailer rental for the full trailer lineup Downey Porta Pros offers.
How many stalls do I need for my event?
For 75 to 150 guests over a single day, four stalls generally keeps lines manageable. Larger weddings or festivals should check the how many porta potties do i need guide, or step up to an 8 stall restroom trailer for guest counts above 150.
Does the trailer need a water hookup?
Most units run self-contained with onboard tanks, but a hookup extends run time for multi-day events. Ask Downey Porta Pros about hookup options when you request a quote for your specific site.
Can I rent a 4 stall trailer for a construction site?
Yes, and many Downey contractors do for jobs running several weeks. Compare against standard unit counts under OSHA 1926.51(c) on the construction site services page before deciding.
What's the difference between this and a standard porta potty setup?
A trailer offers enclosed stalls, sinks, and a finished feel; standard units cost less per unit. See portable restroom rental for a side by side on setups.
Is delivery included in the trailer price?
Delivery is quoted separately based on distance and site access. Contact Downey Porta Pros directly for a delivery estimate to your address.

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Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.