A 4 stall restroom trailer gives four separate private stalls, running water and flushing toilets for events or job sites where a single-unit portable toilet rental can't keep up. San Rafael crews and event planners typically pair it with hand sanitizing or wash stations for guest counts in the 100 to 300 range.
Pricing depends on how long you need it and what condition you're renting for. Trailers in general run from a single day up through a full week or a multi-day event package, and the spread is wide because a basic 4 stall unit costs less than a luxury restroom trailer with climate control and finished interiors. Check current numbers on our restroom trailer rental cost page before you request a quote. Delivery is billed separately from the trailer itself, and San Rafael jobs near San Anselmo (4.3 miles west) or Larkspur (5.1 miles southwest) usually fall into the same delivery zone.
| 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 |
A weekend rental for a wedding or a two-day festival in San Rafael typically lands near the middle of that weekend band, higher than a single weekday but well under a full week-long lease. If you're comparing against a 2 stall restroom trailer or scaling up to an 8 stall restroom trailer, the day rate moves with stall count and finish level, so get quotes on both before deciding. Request a firm number through request a quote once you know headcount and dates.
Four stalls generally cover events between 100 and 300 guests over four to six hours, depending on the mix of men and women and whether alcohol is served. Our how many porta potties do i need guide walks through the math in more detail, and for construction crews the ratio is different: OSHA 1926.51(c) sets 1 toilet facility for 20 workers or fewer on a job site, scaling up from there. A restroom trailer is not usually the right call for a bare construction site with 15 workers moving locations weekly; a standard porta potty rental is cheaper and easier to relocate. For a wedding reception at a fixed venue in San Rafael, though, four enclosed stalls with sinks beat a row of single units every time. If your guest list tops 300, look at the 8 stall restroom trailer instead of doubling up on two 4-stall units.
Not automatically. A standard 4 stall trailer usually has a compact interior layout that doesn't meet accessible route or turning space requirements. ADA Standards section 304.3.1 calls for a 60 inch turning circle, and section 403.5.1 requires a 36 inch clear route to get there. If you need compliant accommodation, order an ada accessible porta potty alongside the trailer, or ask San Rafael Porta Pros to confirm which trailer model in the fleet has a wider stall built to spec. ADA Standards section 213.2 says at least 5 percent of clustered single-user units need to be accessible, never fewer than one, and that rule of thumb is worth applying to trailer placement too. Pair it with a handwashing station rental near the accessible entrance so the whole path stays usable.
Most trailers run on an internal freshwater tank and a small generator or standard outlet, so a hookup isn't mandatory for short events. For multi-day rentals, connecting to a spigot and power source reduces service visits. Ask about your specific trailer's tank size and generator needs when you book through contact.
Yes, but the ground needs to be level and able to support the trailer's weight without sinking. Our porta potty placement guide covers surface prep, clearance, and how much flat space to leave for leveling jacks and steps.
Service frequency depends on guest count and rental length; ANSI/PSAI Z4.3 sets a baseline of one visit per week for up to 10 users over a standard 40 hour week, and event trailers usually get serviced more often than that baseline. Heavier weekend use means a mid-event service call is common.
A 4 stall standard trailer covers the basics: flushing toilets, sinks, and lighting. A luxury restroom trailer adds finished walls, climate control, and sometimes attendant service, at a higher day rate reflecting the upgrade.
Placement in the public right of way needs confirming with the city before delivery. For anything on private property, check the porta potty permit requirements page, and ask San Rafael Porta Pros to help confirm what applies to your site.
Yes. San Rafael Porta Pros delivers 4 stall restroom trailer across San Rafael and the surrounding metro, with same-day and next-day drop-off available on most orders.
Pricing depends on the unit and how long you need it. See our cost breakdown and request a free quote for an exact figure.
Standard rentals include scheduled service — a pump-out, a clean, a restock and fresh deodorizer. Busy or hot-weather sites can be serviced more often.
Call now or request a free quote — clean units, on-time delivery, transparent pricing.
