A 4 stall restroom trailer gives you four private restrooms in one climate-controlled unit, built for weddings, contractor crews and multi-day events in Santa Rosa. Rates for restroom trailers here run from 175 dollars a day up to 2500 for longer or larger bookings, depending on duration and finish level. It flushes, it runs water, and it does not smell like a standard unit.
Four stalls comfortably serve a crowd of 100 to 150 guests for an evening event, or a crew of 30 to 40 workers across a full shift, assuming normal turnover. If your headcount runs higher, check how many porta potties you need before you book, because trailers and standard porta potty rental units often get paired on the same job. Construction crews sizing sanitation for a jobsite should also look at OSHA 1926.51(c), which sets toilet ratios by worker count: one facility for 20 workers or fewer, then additional fixtures as the crew grows. A 4 stall unit alone rarely covers a 200-person wedding, but it works well alongside event restroom rental add-ons or a second trailer for cocktail hour overflow. Santa Rosa venues booking for weekend weddings should also compare a wedding restroom rental package against a standalone trailer, since delivery and pickup logistics differ. If you're near Windsor, 10.3 miles northwest, or Rohnert Park, 8.7 miles south, delivery routing still runs through Santa Rosa dispatch.
Pricing depends entirely on rental length and finish. A single day sits at the low end of the trailer band, while a full week or a multi-day event runs considerably higher because the unit, generator hookup and servicing all scale with time on site.
| Duration | Low | Typical | High |
|---|---|---|---|
| Day | $175 | $800 | $2,500 |
| Week | $150 | $1,397 | $1,650 |
| Event (multi-day) | $2,499 | $3,500 | $3,899 |
Compare that against a luxury restroom trailer if you want upgraded finishes, or step down to a 2 stall restroom trailer for a smaller guest count. For a full breakdown of what drives the price up or down, see restroom trailer rental cost and our general porta potty rental cost page. Delivery in Santa Rosa needs roughly 60 feet of straight clearance behind the truck for setup, same as a roll-off delivery, so tight driveways or narrow event lots should get flagged when you request a quote.
Not automatically. Most 4 stall trailers are built for standard use, and if you need a compliant restroom on site, ADA Standards section 213.2 requires that at least one unit be accessible when units are clustered, and section 404.2.3 sets a minimum 32 inch clear door opening for that accessible unit. Section 405.2 also caps ramp slope at 1:12 for wheelchair access. If your event or jobsite needs guaranteed accessibility, pair your trailer with a dedicated ADA accessible porta potty rather than assuming the trailer covers it. Review ADA restroom requirements before your event date if you're planning for guests or workers with mobility needs. Santa Rosa event planners booking through venues that require ADA compliance in permitting should confirm this detail early, since retrofitting a site plan after permits are filed causes delays. For construction jobs, this pairs naturally with broader construction site services planning, especially on multi-week builds.
Yes, most 4 stall trailers need external power for lighting, water pump and climate control. Sites without power access should ask about a generator option when requesting delivery. Confirm this detail on your request a quote form so dispatch brings the right equipment.
Yes. Many trailers include an interior sink, but exterior handwashing station rental units are common for crews outside the trailer itself. 29 CFR 1910.141(d)(2) requires soap and towels or a hand-drying device at washing facilities, not sanitizer alone.
Book at least 4 to 6 weeks out for peak wedding season. Trailers move fast on weekends. Check event restroom rental or wedding restroom rental for seasonal availability notes.
A 4 stall trailer doubles capacity for larger events or crews. Compare footprint and guest counts on the 2 stall restroom trailer page before deciding.
Placement in the public right of way needs confirming with the City of Santa Rosa. See porta potty permit requirements for general guidance before you finalize a site plan.
Yes. Santa Rosa Porta Pros delivers 4 stall restroom trailer across Santa Rosa 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.
