How Many Stalls Do I Need for My Event?
Stall count depends on guest count and how long people stay put. A 4 stall restroom trailer covers most weddings and mid-size parties, but a crowd pushing past 300 usually needs the 8 stall restroom trailer instead. If you're closer to 100 guests or under, the 2 stall restroom trailer is often enough and costs less to run. For a quick gut check on numbers, our how many porta potties do I need guide walks through the math event planners actually use. Construction crews have a different rule: OSHA 1926.51(c)(1) sets toilet ratios by headcount, starting at one facility for 20 workers or fewer, which is why job sites often lean on standard porta potty rental units instead of a trailer. Weddings in Santa Clara tend to want the nicer finish a trailer offers, especially for outdoor venues without easy building access. If you're comparing options before you commit, the restroom trailer rental page breaks down every size we carry, and the luxury restroom trailer option adds finishes some events want for a rehearsal dinner or reception.
What Does a 4 Stall Restroom Trailer Cost in Santa Clara?
Pricing runs by the day, the week, or a flat event rate, and a longer booking never comes in cheaper per day than a short one.
| Duration | Typical Range |
|---|---|
| Day | $175 - $2,500 |
| Week | $150 - $1,650 |
| Event flat rate | $2,499 - $3,899 |
A weekend booking usually lands between $900 and $3,000 depending on trailer size and add-ons. Delivery is a separate line, generally $100 to $500 for a single day or $50 to $150 if billed weekly, and it depends on distance and site access. For a full cost breakdown across every unit type we carry, see restroom trailer rental cost or compare against porta potty rental cost if you're weighing a trailer against standard units. Most 4 stall trailers need a spot with firm, level ground and enough clearance for the delivery truck; a full-size roll-off or trailer delivery typically needs around 60 feet of straight clearance behind the truck to back in safely.
Is a 4 Stall Restroom Trailer ADA Accessible?
Not automatically. Most 4 stall units are built for general guest use, and if your event needs an accessible stall on top of it, ADA Standards section 213.2 requires at least one accessible unit in any cluster, even a small one. ADA Standards section 404.2.3 sets minimum clear door width at 32 inches, and section 403.5.1 calls for a 36 inch clear route to the door. If your layout needs a dedicated accessible stall, pair the trailer with our ADA accessible porta potty unit rather than assuming the trailer covers it. Turning space matters too: ADA Standards section 304.3.1 calls for a 60 inch turning circle inside an accessible unit, which a standard 4 stall trailer stall usually can't match. For weddings at outdoor Santa Clara venues, we recommend confirming ADA needs early, since retrofitting a layout day-of is harder than planning it up front. Our wedding restroom rental and event restroom rental pages cover placement details specific to those event types, and the porta potty placement guide has ground and clearance notes that apply to trailers too.
Frequently asked questions
How much water does a 4 stall trailer use per event?
It depends on guest count and how often stalls flush, but OSHA 1926.51(a)(1) requires an adequate supply of potable water at any worksite or event using these units. We size the onboard tank to your headcount and event length so you're not refilling mid-event. Ask us for a specific estimate when you book.
Can I add a handwashing station to my rental?
Yes, and most events do. Many trailers include sinks, but standalone handwashing station rental units add extra capacity near food service or entry points. 29 CFR 1910.141(d)(2) requires soap and towels or a hand-drying device at any washing station, not just sanitizer.
Do I need a permit to place a trailer in Santa Clara?
Placement in the public right of way needs confirming with the city before delivery. If your event sits on private property, this usually doesn't apply, but check our porta potty permit requirements page and confirm with the city for anything touching a street or sidewalk.
How far in advance should I book for a wedding?
Book as early as you can, especially for peak wedding season weekends. Trailers book out faster than standard units because there are fewer of them. Contact us through request a quote and we'll confirm availability against your date.
What's the difference between a 4 stall and an 8 stall trailer?
Stall count and guest capacity. The 8 stall restroom trailer suits crowds over 300; a 4 stall fits mid-size weddings and events. Both run on the same delivery and clearance requirements described above.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.