How Much Does a 4 Stall Restroom Trailer Cost?
Restroom trailers price by duration and season, and a 4 stall unit sits toward the middle of the trailer lineup between the smaller 2 stall restroom trailer and the larger 8 stall restroom trailer. Day rentals for trailers span a wide band because power and water hookups change the math. Multi-day weekend bookings for trailers run from roughly $900 to $3,000, and full weeklong rentals land closer to the middle of that range. Full event packages, the kind booked for a wedding or festival weekend, typically run $2,499 to $3,899. Stamford Porta Pros quotes against your dates, not a flat sheet, because a Saturday wedding near downtown Stamford prices differently than a five-day job site rental. For a fuller breakdown of what drives the number, see restroom trailer rental cost or compare against porta potty rental cost if you are weighing standard units instead. Delivery fees run separately, usually $100 to $500 depending on distance and site access, so ask before you assume the quoted trailer price is the final number.
What Comes Inside a 4 Stall Trailer?
Four private stalls, running water at each sink, and climate control set this apart from a standard unit. Compare that to a basic standard porta potty rental, which holds a 60 to 70 gallon tank and stands about 92 inches tall with no plumbing at all. A restroom trailer needs a power hookup or a generator, and most sites in Stamford will need a clear, level pad for placement, similar to the footprint planning covered in the porta potty placement guide. If your event needs showers too, not just toilets, look at a shower trailer rental instead, or step up to a luxury restroom trailer for a higher finish level. Anyone required to meet accessibility rules should also budget for a separate ADA unit, since ADA Standards section 213.2 requires that where single-user units are clustered, at least 5 percent, and never fewer than one, be accessible. Pair the 4 stall trailer with an ADA accessible porta potty rather than assuming the trailer itself satisfies that requirement.
Is a 4 Stall Trailer Enough for My Event?
Four stalls generally covers small to mid-size gatherings, but headcount and event length both matter more than most people expect. A wedding of 100 guests over four hours needs less capacity than a two-day festival with the same headcount, because usage compounds over time. OSHA 1926.51(c) sets construction-site ratios at one toilet for 20 workers or fewer, and while that standard covers job sites, not private events, it is a useful gut check for staffing-heavy days. For weddings specifically, run the numbers against the guidance in wedding restroom rental or the general sizing tool at how many porta potties do I need. Corporate and municipal events booked near venues around Stamford, including anything close to Norwalk 10.8 miles east or Fairfield 21.5 miles northeast, should confirm delivery lead time early since trailer availability tightens on weekends. If you are unsure whether four stalls covers your guest list, Stamford Porta Pros will walk the numbers with you before you book, and can bump you to an 8 stall restroom trailer if the math says so.
Frequently asked questions
How many people can a 4 stall restroom trailer serve in one day?
It depends on event length and whether guests overlap in bursts, like right after a ceremony. A rough industry baseline, ANSI/PSAI Z4.3, treats one service visit per week as sufficient for up to 10 steady users over a 40 hour week, which suggests four stalls comfortably covers a single-day event of 100 to 150 guests.
Does a 4 stall trailer need a power hookup?
Yes, most units need either a generator or a direct hookup for lighting, water pumps and climate control. Stamford Porta Pros can supply a generator if your site lacks power, similar to how a temporary power pole gets specified for construction jobs needing dedicated service.
Can I rent a 4 stall trailer for a construction site instead of an event?
Yes, and many job sites do exactly that when workers need real plumbing over a long project. Pair it with broader construction site services planning, and check OSHA 1926.51(c) ratios against your crew size to confirm a trailer covers your headcount.
What size pad or clearance does delivery require?
Confirm ground clearance and access with Stamford Porta Pros before delivery day, since trailers are longer and heavier than a standard unit. A roll-off delivery truck needs about 60 feet of straight clearance behind it, and trailer delivery follows similar access logic.
Do I need a permit to place a restroom trailer in Stamford?
Placement in the public right of way needs confirming with the city; this has not been verified for Stamford specifically. Check porta potty permit requirements before delivery, especially for street-facing or sidewalk-adjacent placements downtown.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.