Deluxe Restroom Trailer Rentals Serving Ontario, California
The Lavatory brings event restroom trailer rentals to schools, churches, backyards and holiday markets across Ontario, California. Each trailer arrives pumped, stocked and detailed, with flushing toilets, running sinks and the AC on before your first guest walks up. Call us now or request a free quote, and we will match the unit to your crowd and hold your date.
Or request a quote for Ontario availability.One call covers luxury restroom trailers for Ontario events
The luxury standard for restrooms at weddings, corporate events, and film sets.
Call (866) 509-6846 or request a quote and we will size the trailer to your Ontario dates.
Clean by routine: why The Lavatory leads on event restroom trailer rentals in Ontario
Anyone can promise a clean restroom. We run a routine that makes it happen. Before a trailer leaves our yard, the waste tank is pumped, the fresh tank is filled, and every room is scrubbed and restocked with paper, soap and towels. A crew member walks the unit with a checklist and signs it off. On events that run long or stretch over several days, we come back on a set schedule to pump, restock and wipe down again, so the rooms look the same at the last dance as they did at the first. That routine is the reason The Lavatory runs the largest luxury restroom trailer fleet in the Western U.S., with more than 250 trailers we own ourselves. We are licensed and insured, part of an A+ BBB rated network, SAM.gov registered for public agencies, and we have spent more than 30 years in event rental. Call us or request a quote, and we will set up a service plan that fits your event in Ontario, California. For the wider region around Ontario, see luxury bathroom trailers across the Inland Empire.
A fleet we own
We run a direct fleet, not a reseller or a broker. The Lavatory owns more than 250 luxury trailers, so you deal with the team that runs the trucks and the schedule.
Rooms that feel like home
China toilets, running water, mirrors and good light. Guests come out feeling like they used a restaurant restroom.
AC for July, heat for December
Ontario summers can pass 100 degrees, and winter nights get chilly. Climate control comes standard in every unit.
We confirm it is Ontario, California before we roll
Ontario shares its name with a Canadian province, and the city was named after it. When a quote request comes in, we confirm the address in San Bernardino County, check the route off the 10, the 15 or the 60, and plan the approach before the truck leaves.
“Such a good looking restroom trailer for our event in Ontario. Anyone planning an outdoor gathering far from a building should call this company, because they are the best we have used.”
“The staff made booking simple, and the portable restroom stayed spotless with plenty of paper and soap the whole day.”
“We have booked restroom trailers from them for several occasions, and the quality of the units stands out every single time. Their crew is courteous and knows what they are doing, and the rooms are always spotless and well cared for.”
Proof from the site contractors who have booked our bathroom trailers
The companies that could rent anything still call us for restrooms, because a cheap plastic unit at a launch party or a shareholder event ruins everything the day is meant to say. The Lavatory has provided luxury restrooms for names like Google, Tesla, BMW, Mercedes, eBay, and Target, for hospitality at Caesars Palace, and for pro sports including the Golden State Warriors, Oakland A’s, and Las Vegas Raiders. Guest count is the first question, and our post on restroom counts by guest list answers it.
The reason those bookings repeat is simple. A luxury restroom is the one vendor a guest uses and remembers, for better or worse, so the trailer has to be stocked, clean and working from the first guest to the last. That is how we run every unit in the fleet, and it is the same standard behind every Ontario booking, from a backyard engagement party to a festival gate.
Three decades in event and equipment rental, running the largest luxury restroom trailer fleet in the Western U.S. Every unit ours, never a broker’s.
VIP restroom trailer rentals for Ontario school, church and campus events
For an Ontario school fundraiser or a backyard reception with 150 to 400 guests, the 5-Station is our usual pick. It draws power from one 20 A 120 V circuit within 100 ft, which most garages, gyms and church halls can reach.
Ontario schools are spread across several districts, including Ontario-Montclair, Mountain View and Chaffey Joint Union High School District. Their fields and gyms host graduation night, homecoming games, fundraisers and weekend tournaments. Campus restrooms often close after hours, or they sit far from the field where the crowd actually is.
A trailer placed at the end of the stands solves that. We usually set a 5-Station near the snack bar and keep the doors facing the walkway, so families never have to cross the parking lot in the dark. For a big graduation, a 9-Station with an ADA + 2 beside it covers the crowd and gives grandparents a ramp.
Churches bring a different schedule. Parish festivals, Easter services and youth retreats pack a lot with cars and booths for a day or a whole weekend. We place the unit where it does not block the procession path or the kitchen door, and we service it after the lot clears each night.
Youth sports is growing fast here. The new Community Sports Complex near Riverside Drive and Vineyard Avenue adds eight diamonds and eight soccer fields, and weekend tournaments bring travel teams and their families for two or three days at a time. Leagues and tournament hosts can book trailers for the far fields that sit well away from the permanent restroom buildings. Coaches and staff who stay on site all weekend can also look at our Ontario shower trailer rentals.
What is built into each restroom suite
Flushing china toilets
Real porcelain toilets with a foot flush, the same fixtures your guests use at home, not a chemical tank.
Running-water sinks
Stainless steel sinks with real running water, hand soap, and towels, fed by onboard water tanks so you are covered even without a hookup.
Climate control
Air conditioning for a summer afternoon and heat for a cold evening, so the trailer stays comfortable no matter the season.
Framed mirrors and lighting
Oversized framed vanity mirrors, warm interior lighting, and finished flooring that reads like a venue restroom, not a jobsite.
Fully stocked, always fresh
Premium toilet paper, towels, soap, and fragrance, restocked and pumped so the unit stays fresh from the first guest to the last.
Power and water handled
Onboard water tanks plus a generator when your site has no hookup, so the trailer runs anywhere from a vineyard to an open field.
Full specifications for every unit are on the 5-Station spec page and its four sister pages, or call and we will spec it to your Ontario guest count.
The full restroom trailer fleet is one page over; below is how we size a unit to a California guest count.
Picking the right portable restroom trailers for an Ontario event
Five sizes cover everything from a single ADA-compliant suite to a festival crowd. Every one has flushing china toilets, running water and climate control. Tell us your guest count and how long the event runs, and we will size it.
2-Station Restroom Trailer
One women’s suite and one men’s suite for up to about 150 guests, in a compact box that fits into a driveway or garden path. 105 gallons of fresh water, a 300-gallon waste tank and a single 20A/120V circuit make it the pick for backyard weddings and engagement parties.
3-Station Restroom Trailer
Two women’s suites and one men’s suite for up to about 225 guests, sized for the everyday mid-size gathering, from a milestone birthday to a company off-site. 200 gallons of fresh water, a 400-gallon waste tank, one 20A/120V circuit.
5-Station Restroom Trailer
Women’s side with 3 stalls and 2 sinks, men’s side with 1 stall, 1 urinal and 1 sink, built for 150 to 450 guests so a full reception never waits. 200 gallons of fresh water, a 520-gallon waste tank, one 20A/120V circuit within 100 feet.
9-Station Restroom Trailer
Women’s side with 5 stalls and 2 sinks, men’s side with 2 stalls, 2 urinals and 1 sink, sized for 400 to 900 guests so hundreds of people can move through the line at once. Two AC units, two 20A/120V circuits, a 750-gallon waste tank.
ADA + 2 Restroom Trailer
One women’s suite, one men’s suite and one ADA unisex suite with a self-contained ramp, built to federal and California ADA requirements. Sized for events up to about 200 guests or job sites up to about 30 crew, with 210 gallons of fresh water on board.
An 8-Station Private Stall Deluxe and an ADA + 6 configuration are also in the fleet for big productions and larger guest counts. If you are between sizes, we spec it to your guest count rather than nudge you into more trailer than the day calls for.
For events beyond this city, our California restroom trailer service area lists every region we deliver to.
What one hot plastic box costs venue managers in Ontario
Think about what an Ontario event actually costs to put on. The venue, the catering, the flowers, the photographer, the hours of planning. Then picture a guest walking out of a hot plastic box in the middle of all of it. Nobody plans for that. The restroom is the one vendor every single guest uses, often more than once, and it is the detail they quietly judge the whole event by.
A luxury restroom trailer protects everything else you spent on. It reads like an extension of the venue, holds up through a full day of guests, and gives people one less thing to remember for the wrong reason. Set against the total cost of the day, it is a small line item that quietly carries a lot of the impression, which is exactly why the hosts who have been burned once book the trailer first the next time.
A closer look at our deluxe restroom trailers near Ontario
Our restroom trailers, and the kinds of events we set them up for. Backyard weddings, vineyard receptions, corporate lots, film sets, and the festival gates where the lines have to move.
Tournaments, film shoots and arena nights: more work for our deluxe bathroom trailers
Most calls we get in Ontario fall into three groups. Schools, churches and campuses need restrooms for games, fundraisers and services. Couples need them for backyard and ranch style receptions. Market and festival organizers need them for the busy stretch from fall into the holidays.
ONT Field and Sports Empire tournaments
ONT Field opened in March 2026 with room for 6,500 fans and was named the 2026 BaseballParks.com Ballpark of the Year. Tournament hosts and teams can add restrooms near the far fields and parking areas.
Euclid Avenue film shoots
Ontario requires a film permit for any commercial shoot, filed ten business days ahead. Historic Euclid Avenue is a favorite location, and basecamps there need a clean restroom for cast and crew.
Toyota Arena event staging
Concerts and games at Toyota Arena bring crews and vendors who work outside the building for hours. A trailer in the staging lot keeps them close to their trucks.
Ontario Ranch home builds
New tracts in the south end go up on graded pads with no plumbing yet. Builders use our trailers for model home openings and sales events.
Water and power outages
When a main breaks or a building loses water, an office or a restaurant still needs working restrooms. We deliver fast and run the trailer on its own tanks.
Staging during regional emergencies
Ontario’s hazard plan, which keeps the city eligible for FEMA mitigation grants, covers earthquakes, floods and hazardous material spills. When the region faces fires or storms, the airport, freeways and big parking structures make the city a natural staging point, and crews there need clean restrooms on day one.
What ties these together is the guest experience. Nobody remembers a restroom that worked, but everybody remembers one that did not. Because our units sit staged across the region instead of a couple counties away, getting a luxury trailer to an Ontario date, even a last-minute one, is an ordinary ask here, not a scramble. Relief work 4 miles northeast of Ontario can draw on luxury portable restrooms in Rancho Cucamonga.
Temporary bathroom rentals for Ontario holiday markets and seasonal pop-ups
Fall and winter keep Ontario busy. The city lists the Ontario Arts Festival on October 17, a Día de los Muertos altar and procession from late October into November, a Holiday Tree Lighting on December 3 and the Holiday Light Parade on December 5. Private markets, craft fairs and pop-up shops fill parking lots and church grounds across the same weeks.
Pop-up events almost never have enough restrooms. A market in a retail lot may have one restroom inside a store, and that store closes before the market does. A trailer set near the vendor row keeps shoppers on site longer and keeps vendors from leaving their booths.
Evening events need light. Our trailers have lit steps and interior lights, and we face the doors toward the busiest walkway so people can find them after dark. December nights on the valley floor can drop into the 40s, so we run the heat on cold evenings the same way we run the AC in August.
Seasonal markets often run every weekend for a month or more. We can leave a trailer in place for the whole run and service it between weekends, or pick it up and return it each time. Ask about both when you call, and we will quote the plan that fits your schedule.
Keeping temporary restroom trailers fresh through a long Ontario event
We handle the whole thing, not just the drop-off. Our team delivers the trailer, levels and sets it, connects water and power or stages a generator, and stocks it before your first guest arrives. When the event wraps, we come back and haul it away. You never touch the logistics. That part is on us.
For longer or higher-traffic bookings in Ontario, we offer an on-site attendant who keeps the trailer stocked and spotless through the event, and we pump and refresh the unit so it holds up from the first guest to the last. That always-fresh standard is the difference between a restroom guests use once and one they are glad to use all night.
Luxury bathroom trailer rentals for Ontario backyard and ranch weddings
Ontario weddings happen in many kinds of places. Some are in backyards in the older neighborhoods north of the 10. Others are in the newer tracts of Ontario Ranch, where yards are smaller but the streets are wide. A few land on the remaining farm parcels in the south end of the city, where there is room for a tent and not much else.
Each setting needs a slightly different plan. On a backyard job, we look at the driveway and gate and usually place a 3-Station or 5-Station out front. On a ranch or farm parcel, we check the ground, since a soft field after rain is no place for a heavy trailer. We bring boards or pick a firm spot near the drive.
Guest count and the bar decide the size. About 150 guests over a four hour reception fit well with a 3-Station. Once the list passes 200, or the bar stays open late, the 5-Station is the better choice because its women’s side has three stalls and two sinks. We will tell you plainly if a smaller unit will do.
Newer neighborhoods like New Haven have HOA rules, so check whether your association wants to know about a trailer on the driveway. We are happy to send photos and dimensions for their approval. Couples in nearby cities can see how we handle foothill receptions on our Fontana luxury restroom trailer rentals page.
How booking a temporary restroom trailer works in Ontario
Booking should be the easy part of planning an event. Four steps, a straight answer, and one team that owns the whole thing.
Tell us about the event
Share your date, your rough guest count, and the venue. That is enough for us to point you to the right size trailer.
We match the trailer and site
We pair you with a unit, confirm whether the site has water and power or needs a generator, and pin the exact spot so delivery is one clean trip.
Delivery and setup
We arrive on your schedule, level and set the trailer, connect it, and stock it so it is ready and fresh before the first guest.
Enjoy it, we handle pickup
The trailer holds up through your whole event while our line stays open. When you are done, we come back and take it away.
Site planning for temporary restroom trailers in Ontario, done right
A trailer on your own driveway or private lot for a one day party usually needs no city permit. Longer placements, or events on commercial property, may call for a Temporary Use Permit through the Ontario Planning Department. All city permit filings go through the Accela Citizen Access portal or City Hall on East B Street.
Anything in the public street or sidewalk needs an encroachment permit. Film shoots need a city film permit filed ten business days before the first prep day, and the encroachment permit is part of that packet. If your neighborhood has an HOA, like many in Ontario Ranch, check their rules as well.
Waste stays in the trailer’s tanks until a licensed hauler takes it to an approved disposal point, never a storm drain. On long jobs with a sewer line on site, we can connect with the owner’s permission. Our California luxury bathroom trailer rentals team can send spec sheets and insurance papers for any permit packet.
Siting covered before the truck leaves
- ADA-accessible units with a self-contained ramp, wide door, grab bars, and turning room.
- Guidance on where to place the trailer so it is easy to reach and easy to service.
- Water and power sorted before delivery, with a generator staged when the site has no hookup.
- Licensed and insured on every unit we put on the road.
One thing we always say plainly: some venues and city permits have their own rules on placement, accessibility, and event restrooms. Tell us your venue and we will help you plan around them, but confirm any permit requirements with the venue or the city as well.
Three ways we set up bathroom trailers around Ontario
Typical setup: a high school graduation night
When a school expects a full stadium for graduation, we place a 9-Station and an ADA + 2 near the main gate in the afternoon. We run power from the field house or bring a quiet generator. The units stay lit until the last family leaves, and we pick them up the next morning.
Typical setup: a reception on a south Ontario farm parcel
When a couple hosts a reception on open farm ground, we check the soil and pick a firm spot close to the drive. A 5-Station goes there with a generator set well away from the tables. We deliver the day before so the unit is level and cool when the caterer arrives.
Typical setup: a four weekend holiday market
When a market runs every weekend in December, we leave a 3-Station at the end of the vendor row for the whole month. We pump and restock it each Monday, and we face the doors toward the lights so shoppers find it after dark.
Ontario neighborhoods where our private restroom trailers show up
We cover all 50 square miles of Ontario, California, from the north side neighborhoods down to Ontario Ranch, and out to Chino, Montclair, Upland and Rancho Cucamonga. You can compare every size on our luxury restroom trailer rental fleet page. Share your address and date, and we will confirm a delivery window on the same call.
We cover Ontario luxury restroom trailer rentals across California. Neighborhoods and towns we serve include Downtown Ontario, Historic Euclid Avenue, Ontario Ranch, New Haven, Edenglen, Esperanza, Ontario Center, Guasti, Ontario Mills, Sports Empire, Creekside, Countryside, Grove Avenue, Archibald Avenue, Mountain Avenue, Bon View, Chino, Montclair, Upland, Rancho Cucamonga, Fontana, Eastvale. We send the same models 6 miles west of Ontario for clean, private restrooms around Pomona.
Planning an event beyond the city line? See our full restroom trailer coverage across California.
Downtown and Historic Euclid Avenue
The wide, tree-lined Euclid corridor, the Ontario Town Square and the civic center. Street events and film shoots here often need permits, so we plan routes and times with care.
Ontario Ranch and New Haven
New neighborhoods in the south end built on former farm and dairy land. Backyard parties, model home events and HOA rules shape most jobs here.
Ontario Center and Toyota Arena
The district built on the old Ontario Motor Speedway site, near the convention center and Ontario Mills. Arena events and corporate gatherings are common calls.
Sports Empire and Riverside Drive
ONT Field and the new sports complex south of the 60. Tournaments and ballpark events bring the biggest crowds here.
Guasti and the airport area
The historic Guasti townsite near Ontario International Airport, now surrounded by business parks. Corporate events and office gatherings drive the work.
North Ontario neighborhoods
Older homes north of the 10 with larger yards and mature trees. Family parties and receptions are the usual jobs.
Planned rentals are usually scheduled the same week, and we do our best to cover last-minute Ontario dates when a trailer is nearby.
Five-star Google reviews of our Ontario area restroom trailer rentals
“Booking was easy and the crew was great to deal with. Our guests in Ontario kept saying how pretty and fresh the restroom trailer looked.”
“The restroom trailer was so nice and so clean, and everyone on their team was friendly. I recommend them to anybody hosting a party.”
“We threw my fortieth at home in Ontario and the whole rental went smoothly from start to finish. Guests loved having a real restroom outside, and I keep passing this company’s name along to friends.”
“Hands down the best experience we have had renting luxury restrooms. From the first phone call to the unit itself, it was top quality, and the guy who serviced it was excellent.”
“Sal set up our restroom trailer and did careful, professional work. The quality showed in every detail.”
“For about three years we have partnered with The Lavatory on a long list of projects, and they have been amazing throughout. Their mobile restroom trailers show up immaculate, communication is simple, and they accommodate whatever we ask for. The value is strong too.”
Answers on renting restroom trailers around Ontario
When does a long-term or construction rental make sense instead of a one day rental?
Any time you need restrooms for more than a few days. Builders in Ontario Ranch, office remodels and long film shoots often keep a trailer for weeks or months. We set a regular service day for pumping and restocking, so the unit stays clean the whole time. Monthly rentals are common, and we can adjust the service schedule as the job changes.
How do you figure out what my Ontario rental will cost?
We never list prices, because every job is different. The unit size and the number of days matter most. Delivery distance, a generator and extra service visits can also change the quote. Busy weekends in spring, fall and December also book up early. Call us or request a quote and we will give you a clear number.
Do you send an attendant to clean and restock during the event?
For most parties, no attendant is needed. We deliver the trailer fully stocked with extra supplies inside, and someone on your team can top up paper halfway through. For large events, long galas or multi-day festivals, we can add an attendant or scheduled service visits. Tell us the guest count and hours, and we will suggest the right plan.
Will the waste tank fill up during a two or three day tournament?
It depends on the unit and the crowd. A 5-Station holds 520 gallons of waste and a 9-Station holds 750. For a busy weekend tournament we schedule a pump and restock each night after the fields close. That way every unit opens the next morning empty, clean and stocked.
Can I reserve a trailer now for a spring or fall wedding next year?
Yes, and we recommend it. Spring and fall Saturdays book up first across the Inland Empire. Once you have a date and a rough guest count, we can hold the right unit. If your count changes later, we can adjust the size.
Is a permit or HOA approval needed for a restroom trailer in Ontario?
A trailer on private property for a short event usually needs no city permit. If it sits in the street or sidewalk, you will need an encroachment permit, and longer uses on commercial property may need a Temporary Use Permit. Many Ontario Ranch neighborhoods have HOAs, so check with yours. We can send photos and dimensions for any approval.
Where do you park the trailer, and when does it arrive and leave?
We park it on a fairly level spot with a clear path from the street, usually a driveway, lot or firm lawn edge. For weddings and big events we deliver the day before, so the unit is level, filled and cooled ahead of time. Pickup is usually the next day. For short notice jobs, call and we will check what is open.
What if my event needs more than one restroom trailer?
For crowds over about 900, or for events spread across a big site, we place several units. We group them near food, seating and entrances so no one walks too far. We usually add an ADA + 2 to each group. Share your crowd size and site map, and we will plan the layout.
Do you deliver to Ontario, California or Ontario, Canada?
Ontario, California, in San Bernardino County. The city was named after the Canadian province, so we get this question often. We serve all of Ontario, California and the nearby cities of Chino, Montclair, Upland and Rancho Cucamonga.
Can you bring restroom trailers for a youth tournament near ONT Field?
Yes. The sports complex near Riverside Drive and Vineyard Avenue has fields spread over a large area, and the far fields are a long walk from the permanent restrooms. We can place trailers near those fields and parking areas and service them between tournament days.
What do I need to have ready before the trailer arrives?
A fairly level spot, a clear path for the truck, and power. Most units need one standard 20 A 120 V outlet within about 100 feet, while the 9-Station and the ADA + 2 need two. If there is no power nearby, we bring a quiet generator. Water hookup is optional, because the trailer runs on its own fresh tank.
Ontario planning guides for luxury portable restroom rentals
Deeper reading for hosts and planners, from sizing a trailer to your guest count to keeping guests comfortable through a long event. Tap any guide to open it.
Planning restrooms for an Ontario school graduation or sports night
Graduations and big games bring the largest crowds most schools see all year. Families arrive early, stay late, and bring grandparents and small children. Campus restrooms are usually built for students on a school day, not thousands of visitors in one evening.
Start with the crowd at the busiest moment. A stadium with 3,000 guests does not need 3,000 restroom visits at once, but it does see a rush right before the ceremony and at halftime. Plan for that rush.
What to ask before renting a restroom trailer for an Ontario Ranch backyard party
Ontario Ranch is full of new homes on compact lots with wide streets. That mix makes restroom trailers easy to deliver but a little tricky to place.
Ask first about your HOA. Many neighborhoods in the south end have rules about trailers on driveways. A quick email with photos and dimensions usually settles it.
Running restrooms for a month long holiday market in Ontario
Holiday markets have become a big part of the season in the Inland Empire. Many run every weekend from Thanksgiving to Christmas, and some add weeknight hours in December.
A market that runs for weeks needs a different restroom plan than a one day event. Moving a trailer in and out every weekend adds cost and hassle. Leaving it in place, with a service visit each week, is usually simpler.
Restroom planning for film shoots on Historic Euclid Avenue
Ontario is a popular place to film, and Historic Euclid Avenue is one of the city’s most used locations. Its wide lanes and grassy center median show up in ads, music videos and TV shows.
Every commercial shoot in Ontario needs a city film permit. The city asks for all documents ten business days before the first prep day, and weekends and holidays do not count. Street closures and special effects need approval before that deadline.
Ready to book? Call or request a quote for your Ontario date
Call us or request a quote with your date, guest count and address. We will pick the unit, check the site and set the service plan.
