How Big Is a 4 Stall Restroom Trailer?
Think of it as four private rooms on wheels, each with its own door and lock, plumbed to flush and lit inside. It sits between the smaller 2 stall restroom trailer and the bigger 8 stall restroom trailer, so it fits gatherings that outgrow a couple of standard porta potty rental units but don't need a full luxury setup. You'll want level, firm ground for placement, since ADA Standards section 302.1 calls for stable, slip resistant surfaces anywhere an accessible route runs. If guests will need barrier-free access, pair the trailer with an ADA accessible porta potty nearby, since ADA Standards section 404.2.3 sets a 32 inch minimum clear door opening and most trailer stalls are built narrower than that. Santa Monica sits close enough to pull trailers in from routes near Culver City, 7.5 miles east, without a long haul fee stacking onto delivery. Check the restroom trailer rental page for the full lineup if four stalls turns out to be more or less than you need.
What Does a 4 Stall Restroom Trailer Cost in Santa Monica?
Pricing depends on how long you need it and whether it's a weekend event or a longer job. Below is what the market shows across trailer rentals generally, since the 4 stall sits within these bands.
| Duration | Low | Typical | High |
|---|---|---|---|
| Day | $175 | $800 | $2,500 |
| Weekend | $900 | $2,000 | $3,000 |
| Week | $150 | $1,397 | $1,650 |
| Event | $2,499 | $3,500 | $3,899 |
Delivery adds its own line item, and a weekend delivery fee commonly lands near $200 once you account for the drive, setup and pickup. If you're comparing against a simpler option, the porta potty rental cost page breaks down single-unit pricing, and restroom trailer rental cost goes deeper into what drives the trailer numbers up or down. A request a quote gets you an exact figure for your dates and site.
Do I Need a Permit for a Restroom Trailer in Santa Monica?
Placement in the public right of way, on a sidewalk, or in a street lane needs confirming with the city before delivery day. We haven't verified a specific Santa Monica ordinance for trailer placement, so check with the city's permitting office directly rather than assume. If the trailer sits entirely on private property, like a backyard or a fenced job site, that's usually simpler, but confirm setback and access rules before you commit to a spot. Our porta potty permit requirements page and porta potty placement guide cover the general placement questions that come up, including how much clearance the delivery truck needs. A roll-off truck alone needs about 60 feet of straight clearance behind it, and a restroom trailer needs a similar approach path, so narrow alleys or tight driveways in older Santa Monica lots can complicate delivery. If your event also needs waste removal, look at roll-off dumpster rental or check dumpster permit requirements before the trucks show up on the same day.
How many people can a 4 stall trailer handle comfortably?
Four stalls comfortably cover a gathering in the 100 to 150 guest range over a few hours, following the same logic as OSHA 1926.51(c), which scales toilet counts to headcount on job sites. For an exact number tied to your guest list or crew size, use how many porta potties do i need to run the math.
Does the trailer need to be hooked up to water and power?
It needs a nearby power source, typically standard household voltage, and either a fresh water fill or an onboard tank depending on the model. If your site lacks power, ask about a light tower rental or temporary power pole setup alongside the trailer.
Can I add handwashing stations separately?
Yes. Most trailers include a sink per stall, but for job sites or larger events, a separate handwashing station rental adds capacity without waiting in line. 29 CFR 1910.141(d)(2) requires soap and towels or a hand dryer at any washing station, not just sanitizer.
What is the difference between this and a luxury trailer?
A luxury unit steps up finishes, climate control and stall count beyond the standard 4 stall layout. Compare features on the luxury restroom trailer page before booking if your event calls for a nicer interior.
How far in advance should I book for a Santa Monica event?
Book as early as you can once your date is set, especially for weekends, since trailer inventory is limited compared to standard units. Check event restroom rental or wedding restroom rental for timing guidance specific to your event type.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.