Wedding Restroom Rental FAQ

How many restrooms do I need for a 150-guest wedding?

For a 150-guest dinner reception with alcohol over 4–6 hours, our calculator gives 5 stalls (150 ÷ 40 × 1.2 = 4.5, rounded up), which means a 6-stall restroom trailer. Without alcohol it gives 4 stalls. A cocktail reception with alcohol needs 4 stalls (3 without), and a ceremony-only event needs 2. Vendor charts often suggest less, so treat this as a planning estimate.

What is the rule of thumb for wedding restrooms?

The baseline is 1 restroom stall per 50 guests for a typical 4–6 hour reception. Add 20% for alcohol service, and another 20% if the event runs past 6 hours. Ceremony-only events can stretch to 1 per 100 guests.

Sources: Stahla Services — Restroom Trailer Size Guide

Is a restroom trailer better than standard portable units?

For weddings, restroom trailers are strongly preferred: they have flushing toilets, running-water sinks, mirrors, climate control, and upscale finishes that match the event atmosphere. Standard portable units work for casual outdoor weddings on a tight budget.

Do I need an ADA-accessible restroom for my wedding?

If any guest uses a wheelchair or mobility device, plan for at least one accessible unit. Where single-user portable toilets are clustered, §213.2 of the 2010 ADA Standards requires no more than 5% of the units in each cluster to be accessible; our calculator suggests 5%, minimum one, as planning guidance. Accessible toilet rooms need a 60-inch turning space, side and rear grab bars 33–36 inches high, a toilet seat 17–19 inches high, and a sink rim or counter no higher than 34 inches.

Sources: 2010 ADA Standards for Accessible Design — §213 Toilet Facilities; 2010 ADA Standards for Accessible Design — §304 Turning Space; 2010 ADA Standards for Accessible Design — §604 Water Closets

How much does wedding restroom trailer rental cost?

Our planning estimate is $800–$1,500 for a 2-stall restroom trailer for a single day, and $1,500–$3,500+ for 6-stall and 8-stall trailers. These are not quotes, and published prices vary widely: Stahla's 2026 pricing guide lists a 2-stall trailer at $2,799 per event before setup and other fees. Prices vary by region, season, and whether AC/heat is needed. Request quotes from multiple local providers to compare.

Sources: Stahla Services — Restroom Trailer Rental Cost (2026 Guide)

When should I book my wedding restroom trailer?

Stahla Services' 2026 pricing guide recommends booking at least 3–6 months ahead for weddings in its May–October peak season, and its FAQ says popular Saturday dates in June or September should be secured 6–12 months out. Off-season events typically need only 6–8 weeks' notice, according to the same guide. Confirm delivery and pickup timing with your venue coordinator.

Sources: Stahla Services — Restroom Trailer Rental Cost (2026 Guide)

Where should the restroom trailer go at the venue?

On firm, level ground the delivery truck can reach. Stahla's size guide asks for a level, stable surface within 150 feet of the event, 3 feet of clearance on all sides and a clear path for the truck. Rumpke needs 4 feet of open space in front of the trailer for the steps to fold down. United Site Services wants power and water within 50 feet and asks customers to check the delivery path for obstacles such as shrubbery, septic systems and sprinklers. Stahla's guide also plans delivery 1–2 days before the event and pickup within 1–2 days after, so the spot needs to be free for longer than the wedding itself.

Sources: Stahla Services — Restroom Trailer Size Guide; Rumpke — Portable Restroom Trailers; United Site Services — Restroom Trailer and Shower Trailer Rentals: Water and Power Requirements

What should an accessible restroom trailer have?

The 2010 ADA Standards give the measurements to ask a rental company about. Inside, an accessible toilet room needs a turning space: a 60-inch circle or a T-shape (§603.2.1 and §304). The door needs a clear width of at least 32 inches (§404.2.3). A ramp to the door can be no steeper than 1:12 (§405.2), can rise no more than 30 inches per run (§405.6), needs landings at least 60 inches long at the top and bottom (§405.7), and needs handrails if a run rises more than 6 inches (§405.8). The ground along the route from the event should be stable, firm and slip resistant (§302.1), and the walking portions of the route should have a running slope no steeper than 1:20 (§403.3); ramps on the route follow the steeper 1:12 limit above (§402.2). Not every company rents accessible trailers: Rumpke says it does not currently offer them, while Stahla lists ADA trailers from 2 to 10 stalls. Whether the Standards legally apply to your wedding depends on the venue and host, so ask your venue what it requires.

Sources: 2010 ADA Standards for Accessible Design — §304 Turning Space; 2010 ADA Standards for Accessible Design — §404 Doors, Doorways, and Gates; 2010 ADA Standards for Accessible Design — §405 Ramps; 2010 ADA Standards for Accessible Design — §402 Accessible Routes; Rumpke — Portable Restroom Trailers; Stahla Services — Restroom Trailer Size Guide

Do I need a permit for a restroom trailer at my wedding?

It depends on your county, city and venue, so check with the local planning or environmental health office before you book. Rules vary by place. As one example, in San Luis Obispo County, California, the planning department says renting out barns or fields for weddings requires the property to meet certain standards and obtain the correct permit, most likely a Minor Use Permit. If you are using private land rather than an established venue, ask the owner whether it is permitted for events.

Sources: County of San Luis Obispo Planning & Building — Events