What is a 4 stall restroom trailer?
A 4 stall restroom trailer is a towable unit with four private restrooms, each with its own door, flushing toilet, sink, mirror and interior light, built for events and jobs that outgrow a smaller trailer but do not justify a bus-length one. It is the size most New York event planners end up renting, because four stalls clears a normal wedding without asking for three parking spaces.
Layouts vary more than the name suggests. The common builds are two rooms per side, a three-plus-one with an oversized accessible room, and a men's suite with two urinals paired against two women's rooms. Ask which configuration you are being quoted, because a 4 stall with two urinals moves a queue noticeably faster than one without. Every size sits side by side on the restroom trailer overview.
4 stall restroom trailer dimensions and capacity
Typical manufacturer specification ranges for a four-station towable restroom trailer:
| Spec | Typical figure |
|---|---|
| Body length | 18 to 24 ft |
| Body width | 8 to 8.5 ft |
| Overall length with tow vehicle | 40 to 46 ft |
| Waste tank | 300 to 500 gal |
| Fresh water tank | 100 to 200 gal |
| Dry weight | 5,000 to 7,500 lb |
| Power draw | 30 amp service, or two 20 amp circuits |
| Rooms | 4, plus urinals on some builds |
Water weighs 8.34 pounds per gallon, so a full 500 gallon waste tank carries more than two tons on its own. That is why a four-station unit gets pumped in place rather than towed away loaded, and why the truck needs somewhere to stand within hose reach on service day.
Power is the spec people underestimate. A single 120 volt, 20 amp branch circuit delivers about 2,400 watts under NFPA 70, the National Electrical Code, and a four-station trailer with air conditioning and a water heater will exceed that on a July afternoon. Either give it a 30 amp feed, a temporary power pole on a jobsite, or a correctly sized generator.
Where a 4 stall trailer fits in the five boroughs
Plan for two curb spaces plus room for the tow vehicle to swing. That is achievable on most residential Queens and Staten Island streets, on park service roads, and in stadium and venue lots. It is much harder on a Lower Manhattan crosstown block, where a 2 station unit is often the only trailer that gets in.
Local constraints that decide the answer:
- Sidewalk sheds. The Department of Buildings Facade Inspection Safety Program keeps thousands of sheds up across Manhattan and the Bronx, and a shed leaves no room to open a trailer door.
- Parkway routing. Commercial vehicles are banned from the parkway network, so the Belt Parkway, the FDR and the Henry Hudson are closed to the tow. Delivery routes run on the NYC DOT truck route network, which is why a Rockaway drop and a Midtown drop price differently.
- Hydrants. City traffic rules prohibit parking within 15 feet of a fire hydrant, and a 24 foot trailer eats most of a frontage.
- Park venues. Randalls Island Park covers about 480 acres, Prospect Park 526 and Flushing Meadows Corona Park 897, and each runs its own service vehicle access rules under an NYC Parks special event permit applied for weeks ahead.
Placement is decided by pedestrian clearance first. Never a curb ramp, a building entrance, an emergency path or a work-zone route, and the 2010 ADA Standards require a minimum 36 inch clear width on a pedestrian access route in section 403.5.1. See the placement guide.
Do you need a permit for a 4 stall trailer on a NYC street?
Yes. A trailer standing on a New York City street or sidewalk needs a Department of Transportation permit, handled through the Bureau of Permit Management and Construction Control at 55 Water Street with the borough offices doing approvals, and turnaround ranges from about a day to several weeks depending on borough and work type. Call 311 for guidance on a specific block.
Private property placements skip all of it. The walkthrough is on porta potty permit requirements, and jobs needing a container as well should read dumpster permit requirements.
What does a 4 stall restroom trailer cost in New York City?
| Rental period | Typical range |
|---|---|
| Per day | $350 to $800 |
| Weekend | $1,100 to $2,000 |
| Per week | $1,300 to $2,500 |
| Per month | $2,800 to $4,800 |
Market ranges reviewed July 2026, not a quote. Delivery in a per-week context typically adds $50 to $150, and additional services run $30 to $220 each. New York placements sit toward the top of national bands because of drive time, parking and permit work. Every line is itemised on the restroom trailer cost page, and what porta potty rental costs covers the standard-unit comparison.
How many guests does a 4 stall trailer handle?
Portable Sanitation Association International event guidance puts one restroom per 50 to 100 guests over a four-hour event, with 15 to 20 percent added when alcohol is served. Four stalls therefore covers about 250 guests comfortably, or nearer 200 at an open-bar reception that runs five hours.
On a worksite the arithmetic is different. OSHA 1926.51(c)(1) requires one toilet per 20 construction workers on a 40-hour week, so a four-station trailer legally covers a crew of 80, and OSHA
1910.141(c)(1)(i) sets the general-industry equivalent at four toilets for 56 to 80 employees. Check your own count on how many porta potties do I need and OSHA portable toilet requirements.
Events this size is usually rented for
Four stations is the default for a park wedding, a corporate lawn event, a mid-size film base camp and a golf outing. Wedding restroom rental covers layout and timing, event restroom rental the general planning, and golf tournament restrooms the problem of spreading units across a course rather than clustering them.
Production is the other steady user. The Mayor's Office of Media and Entertainment issues the film permit that holds the parking, and a four-station unit fits a base camp beside the mobile office trailer without taking the whole block. See film set restroom rental. Bigger footprints move up to an 8 station trailer, and crews on multi-week shoots often add a shower trailer.
Accessibility, service and booking
Some four-station builds dedicate one oversized room to accessible use, but the ramp is the sticking point. The 2010 ADA Standards cap ramp running slope at 1:12 in section 405.2, which means 36 feet of run for a 36 inch floor height plus landings. Section 604.8.1.1 sets a wheelchair-accessible compartment at 60 inches minimum width. Where the sidewalk cannot take that, an ADA ground-level unit beside the trailer is the practical answer, and ADA restroom requirements explains the rest.
ANSI/PSAI Z4.3, the American National Standard for nonsewered waste-disposal systems, sets weekly service as the baseline for a standing unit; busy event trailers get serviced mid-event. How often units are cleaned covers the schedule, and a handwashing station beside the trailer keeps the vanities free.
Have the address with cross streets, the surface, the power source and the permit question answered before you call. The rental checklist lists it all. Send it via the quote form or the contact page. We cover all five boroughs plus Newark, Hempstead and the rest of the areas around New York City.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.