How many people can a 4 stall restroom trailer handle?
Four stalls split evenly between men's and women's sides works well for gatherings under 300 people spread across four to six hours. Past that, guests start waiting, and waiting at a wedding reception is the complaint you remember. If your headcount runs higher, step up to the 8 stall restroom trailer or ask about the luxury restroom trailer for a nicer finish at a similar footprint. For construction crews, OSHA 1926.51(c) sets the ratio at one toilet facility per 20 workers, so a 4 stall unit can cover a crew up to 80 before you need a second bank of facilities. We size this out for free through request a quote, and the placement guidance mirrors what we cover on the porta potty placement guide for driveway grade and setback. Frederick job sites near Ballenger Creek, 6.2 miles south of downtown, and Braddock Heights, 5.8 miles west, both fall inside our standard delivery radius. If you are still deciding between a trailer and standard units, the portable toilet rental page breaks down when each makes sense.
What does a 4 stall restroom trailer cost in Frederick?
| duration | low | typical | high |
|---|---|---|---|
| day | 175 | 800 | 2500 |
| week | 150 | 1397 | 1650 |
| weekend | 900 | 2000 | 3000 |
| event | 2499 | 3500 | 3899 |
Pricing depends on trailer finish, run length and how far the delivery truck has to travel. A roll-off or trailer delivery needs about 60 feet of straight clearance behind the truck, so tight downtown Frederick lots sometimes cost more to service than open lots near Bartonsville, 8.1 miles southeast. Full breakdowns live on the restroom trailer rental cost page, and if a trailer is more than the job needs, compare it against standard porta potty rental or the deluxe flushable porta potty line. Multi-week construction jobs usually land in the week or month tier rather than paying daily rates repeatedly; see monthly porta potty rental for that comparison. For a quick gut check across all unit types, start at porta potty rental cost.
Is a 4 stall restroom trailer accessible?
Not automatically. Standard 4 stall trailers are built for foot traffic, not wheelchair clearance, so if any guest or worker needs an accessible unit, ADA Standards section 213.2 requires at least one accessible unit whenever units are clustered, even if that minimum is just one. We pair 4 stall trailers with a standalone ADA accessible porta potty unit on most Frederick event bookings rather than trying to retrofit a stall. ADA Standards section 404.2.3 sets minimum door width at 32 inches and section 403.5.1 requires a 36 inch clear route, specs that a compact interior trailer stall often cannot meet. For events on uneven ground, review the ADA restroom requirements guide before you finalize placement. Handwashing matters too: 29 CFR 1910.141(d)(2) requires soap and towels or a hand dryer, not just sanitizer, which is why we recommend adding a handwashing station rental unit alongside the trailer for larger crowds.
How far in advance should I book a 4 stall restroom trailer in Frederick?
Two to four weeks works for most weekends; peak wedding season and festival dates fill faster. Farm venues and vineyards near Frederick often book trailers months out. Check event restroom rental or wedding restroom rental for season-specific timing.
Can a 4 stall trailer run without a hose hookup?
Yes, most units carry a fresh water tank and holding tank built in, similar to the 60 to 70 gallon tank on a standard portable unit, just larger. Ask about tank capacity when you book through restroom trailer rental.
Does the trailer need electricity on site?
Most 4 stall trailers run interior lights and a pump off a standard outlet or a small generator. If your site has no power, ask about pairing a temporary power pole or a light tower rental for evening events.
What is the difference between a 2 stall and 4 stall trailer?
Stall count sets your guest capacity, not just size. A 2 stall restroom trailer suits under 100 guests; a 4 stall doubles that comfortably before lines form.
Do I need a permit to place a trailer in Frederick?
Placement in the public right of way needs confirming with the city; requirements vary by lot and site. See the porta potty permit requirements page, and check with the city before delivery day.

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