How many restrooms does a wedding need?
Start with guest count, not guesswork. A backyard wedding for 40 guests is a different job than a 200-person reception at a rented hall, and the how many porta potties do I need guide walks through the math most planners use. OSHA 1926.51(c) sets construction-site ratios (one toilet per 20 workers), which is not your rulebook for a private event, but it is the closest published benchmark for restroom-to-headcount planning and a lot of rental companies still lean on it for sizing. For a wedding, plan on one standard unit per 50 guests as a rough floor, and go higher if there's an open bar. If anyone in your party uses a wheelchair, ADA Standards section 213.2 requires at least one accessible unit whenever units are clustered, even if you only order two or three. A standard porta potty rental covers the budget end. For a nicer look near the ceremony or reception tent, most couples upgrade to a wedding restroom trailer rental, often a 2 stall restroom trailer or 4 stall restroom trailer depending on the guest list. Larger receptions sometimes need an 8 stall restroom trailer to keep lines from forming during toasts.
What does wedding porta potty rental cost in Seattle?
Pricing depends on the unit type, the rental length, and how far the site sits from Seattle. A standard unit for a weekend event runs $125 to $400, a deluxe flushable unit for a day runs $85 to $1,200 depending on features, and a full luxury restroom trailer for a weekend runs $900 to $3,000. Delivery adds a separate fee, typically $125 to $540 for weekend jobs. Here's how the common options stack up:
| Unit | Weekend | Notes |
|---|---|---|
| Standard porta potty | $125 - $400 | Best for budget weddings, backyard events |
| Deluxe flushable | $150 - $290 (week rate shown; ask about weekend) | Flush handle, small sink |
| ADA accessible unit | $199 - $300 | Required if any guest needs one, per ADA 213.2 |
| Restroom trailer | $900 - $3,000 | Multiple stalls, running water, mirrors |
For a full breakdown by duration, see porta potty rental cost or check the restroom trailer rental cost page if you're leaning toward a trailer. If your wedding runs a single day, porta potty rental per day rates apply instead of the weekend bracket. Couples booking a Friday-through-Sunday event should ask specifically for the weekend rate rather than three day-rate units stacked together, since it's usually the better deal.
Where can we place restrooms at a Seattle venue?
Placement rules depend on whether the unit sits on private property or spills into the public right-of-way. If your venue has its own parking lot or lawn, placement is mostly about ground stability, per ADA Standards 302.1, and keeping a 36 inch clear path per ADA Standards 403.5.1 if guests with mobility needs will use the unit. If any part of your setup, a trailer, a storage container for décor, or a dumpster for teardown, needs to sit on the street, Seattle requires a Street Use permit from the Seattle Department of Transportation before delivery, under SMC 15.04.010. That permit process is well documented for storage containers and dumpsters, with placement rules requiring units to stay at least 30 feet from intersections, 10 feet from driveways, and 15 feet from fire hydrants. Whether a portable toilet specifically needs its own permit type in the right-of-way hasn't been confirmed by SDOT's published categories, so if your ceremony site is anywhere near a curb or street parking, check with the city before delivery day. See porta potty permit requirements and porta potty placement guide for more on siting units correctly. Venues in Mercer Island, 8.9 miles southeast of Seattle, or Shoreline, 11.8 miles north, may have their own local rules worth a call as well; see service areas for coverage details.
Rain matters here too. Seattle sees an average of 91.0 days a year with at least 0.10 inch of precipitation, more than most cities, so a covered walkway or a trailer with a roof over the entry keeps guests dry between the tent and the restroom. If your wedding lands in the wetter months, our porta potty in winter guide covers keeping units usable in the cold. For outdoor weddings generally, browse event restroom rental or the dedicated wedding restroom rental options built for this exact booking.
How far in advance should we book a wedding porta potty rental?
Book as soon as your date and guest count are set, ideally two to three months out for peak wedding season. Popular Saturdays in Seattle fill delivery schedules fast, and trailer units book out further than standard units. Contact us through request a quote once you have a headcount.
Do we need an ADA accessible unit for our wedding?
If any guest, vendor, or member of the wedding party uses a wheelchair, yes. ADA Standards section 213.2 requires at least one accessible unit whenever units are clustered together, even for small events. See ADA restroom requirements for full detail.
Can we get a nicer restroom trailer instead of standard porta potties?
Yes. Most couples upgrade to a luxury restroom trailer for the reception, especially for evening events with formal attire. Trailers include running water, mirrors, and multiple stalls, unlike a standard unit.
How close to the ceremony can the restroom be placed?
As close as ground conditions and site rules allow. Units need stable, level ground per ADA Standards 302.1, and a 36 inch clear path if anyone needs accessible access, per ADA Standards 403.5.1.
What if our venue is outside Seattle proper?
We cover nearby towns including Issaquah, 16.7 miles east, and Sammamish, 21.3 miles east. Check porta potty rental in Issaquah or service areas for full coverage.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.