A 4 stall restroom trailer gives you four private stalls for events and job sites where multiple porta potties would slow people down. Rental runs from a day rate near the low end of the trailer band up through week-long jobs, and Downtown DC Porta Pros sizes each trailer to your headcount before quoting.
A 4 stall unit works well for crowds in the low hundreds over a few hours, more if the event runs longer and guests cycle through steadily. For construction crews, OSHA 1926.51(c) sets the ratio at one toilet facility for 20 workers or fewer, so four stalls covers a crew well past that first tier before you'd need a second unit. Weddings and private parties in Downtown DC tend to run smaller, and a 4 stall trailer handles that guest count comfortably without lines forming at the door. If you're not sure where your event falls, the porta potty rental checklist walks through headcount math, and how many porta potties do I need covers the same question for standard units. Larger festivals or multi-day builds sometimes need to step up to an 8 stall restroom trailer instead, and we'll tell you honestly if your job needs the bigger footprint.
Pricing depends on how long you need it and whether it's an event or a standing job site rental. Here's what the market looks like across trailer rentals generally:
| Duration | Low | Typical | High |
|---|---|---|---|
| Day | $175 | $800 | $2,500 |
| Week | $150 | $1,397 | $1,650 |
| Weekend | $900 | $2,000 | $3,000 |
| Event | $2,499 | $3,500 | $3,899 |
A delivery fee applies on top of the rental, and most delivery charges for a single day fall in the $100 to $500 range depending on distance and site access. For a fuller breakdown by duration and add-ons, see restroom trailer rental cost and the general porta potty rental cost page, which explains how delivery, service frequency and unit type stack up. If your event runs short and simple, a 2 stall restroom trailer or standard portable toilet rental might cost less and still cover the guest count.
Not automatically. Most 4 stall trailers are built for able-bodied guests moving through narrow stalls, and accessibility needs its own unit or its own stall inside the trailer. ADA Standards section 213.2 requires that where single-user portable units are clustered, at least 5 percent must be accessible, with a minimum of one unit regardless of cluster size. That means a job site running several standard units alongside a trailer still needs an ADA accessible porta potty in the mix. Accessible stalls also need a 60 inch turning circle under ADA Standards 304.3.1 and a door opening at least 32 inches wide per ADA Standards 404.2.3, dimensions most 4 stall trailers don't build into every stall. If your event in Downtown DC expects wheelchair users or mobility-impaired guests, tell us up front so we can pair the trailer with a compliant unit. The ADA restroom requirements guide covers the full standard, and general portable restroom rental options give you flexibility to mix unit types on one site.
Downtown DC sits inside a dense grid, and delivery trucks need roughly 60 feet of straight clearance behind the trailer to position it, so tight alleys and loading docks need a site check before delivery day. We serve jobs and events throughout Downtown DC and coordinate placement with venue managers when access is limited. For nearby jobs, we also deliver to Hyattsville, about 6.4 miles northeast, and Takoma Park, roughly 6.5 miles north. Construction crews should check construction site services and OSHA portable toilet requirements before booking, and event planners can browse event restroom rental or wedding restroom rental for setup ideas suited to a 4 stall trailer.
Book as early as you can once your date is set, especially for weekend events when trailer demand runs high. Weddings and festivals should lock in weeks ahead. Job sites can often get faster turnaround. Call Downtown DC Porta Pros to check availability for your date.
Most 4 stall trailers run on interior lighting and pumps that need a power source, either shore power or a generator. Tell us your site setup when you request a quote, and we'll bring what's needed. Ask about temporary power pole options if your site has no power access.
Yes. If your event calls for finished interiors, climate control or a more upscale feel, the luxury restroom trailer line offers that step up. Pricing runs higher than a standard 4 stall unit, and we'll walk you through the difference before you decide.
Service frequency depends on usage, but the industry baseline under ANSI/PSAI Z4.3 is one visit per week for moderate use. Heavy-traffic events often need daily service instead. We'll set a schedule that matches your headcount and event length.
Delivery includes the trailer itself, hookup or generator coordination, and an initial service check before guests arrive. We confirm site access, including the 60 foot clearance needed behind the truck, before your delivery date to avoid delays.
Yes. Downtown DC Porta Pros delivers 4 stall restroom trailer across Downtown DC 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.
