How many units do you actually need?
Start with headcount, not guesswork. OSHA 1926.51(c) sets 1 toilet for 20 workers or fewer on a construction site, then 1 toilet seat and 1 urinal per 40 workers once you pass 20. At 200 or more workers the ratio moves to one seat and one urinal per 50. Farmington Hills Porta Pros runs this math on every quote, because guessing low means a line at 10am and a call to us by noon. If you are planning a wedding or block party instead of a job site, the ratio question is different and worth working through on how many porta potties do I need. Event crowds use restrooms in bursts, not steady shifts, so a standard porta potty rental count for 150 guests looks nothing like a crew count. For mixed crews needing an accessible option, ADA Standards 213.2 requires at least 5 percent of clustered single-user units, and never fewer than one, to be accessible.
What does the delivery site need before the truck shows up?
Clear a flat pad roughly 44 by 48 inches per standard unit, with the unit standing about 92 inches tall once set. That is the footprint of one standard porta potty rental unit, and it needs to sit level so the 60 to 70 gallon tank drains and services correctly. If you are also bringing in a roll-off dumpster rental, our drivers need about 60 feet of straight clearance behind the truck to back in without hitting a fence line or parked car. Check overhead wires and low branches too. For a job near a public sidewalk in Farmington Hills, placement in the right of way needs confirming with the city before delivery day, since we do not have that ordinance detail in front of us and won't guess. Review the porta potty placement guide and porta potty permit requirements before delivery week, not the morning of. If ground access is tight, a portable restroom rental with a smaller footprint may fit better than a trailer.
Do you need handwashing or just toilets?
You need both if anyone on site is applying paint, coatings, herbicides or insecticides. OSHA 1926.51(f)(1) requires washing facilities specifically for that contaminant exposure, not for general labor. General industry sites should also look at 29 CFR 1910.141(d)(2), which requires soap and towels or a hand-drying device at wash stations. Hand sanitizer alone does not satisfy that rule. Farmington Hills Porta Pros pairs a handwashing station rental with restroom orders on most construction jobs, and a portable sink rental works well for food vendors at outdoor events. Farms hiring hand-labor crews fall under a separate standard, OSHA 1928.110, which calls for potable water, toilets and handwashing within a quarter mile walk, at one facility per 20 employees. Water access matters too: OSHA 1926.51(a)(1) requires an adequate supply of potable water at every place of employment, which is why we check water needs at booking, not delivery.
When should you book and how long should the rental run?
Book at least a week out for standard jobs, and two weeks out for weekend events when trucks get tight. Pricing depends on duration, and longer terms cost less per day, not more:
| unit | day | week | month |
|---|---|---|---|
| standard | $100-$350 | $130-$500 | $125-$325 |
| ada | $200-$400 | $240-$500 | - |
| deluxe | $85-$1200 | $150-$290 | - |
| dumpster | $51-$112 | $426-$778 | $800-$1200 |
A weekend rate for a standard unit runs $125 to $400, useful if you only need coverage Friday through Sunday for a backyard event. Check exact numbers against porta potty rental cost, porta potty rental per day, or monthly porta potty rental depending on your job length. Long renovation jobs often do better with monthly service; see home renovation porta potty for that comparison. If you're near Farmington, 2.5 miles south, or Redford, 9.0 miles southeast, delivery windows run about the same as inside Farmington Hills itself.
Servicing frequency matters as much as the rental length. The industry baseline under ANSI/PSAI Z4.3 is one service visit per week for up to 10 users across a 40 hour week. High-traffic events need more frequent pumping, which you can plan for on how often are porta potties cleaned. If you are running a septic system instead of rentals, a typical 1,000 gallon residential tank gets pumped every 3 to 5 years depending on household size and tank size, per how often to pump a septic tank guidance built into our septic pumping service.
What size unit fits a small backyard party?
A standard unit at 44 by 48 inches fits most backyards without crowding a patio or fence line. For 20 to 30 guests, one standard unit usually covers a single afternoon event. Check the event restroom rental page for guest-count breakdowns beyond that range.
Do you need a permit for a porta potty in Farmington Hills?
Possibly, depending on placement. If the unit sits in a driveway or yard, permitting is rarely required, but right-of-way placement needs confirming with the city directly. See porta potty permit requirements before finalizing a site plan.
How far in advance should I schedule delivery?
One to two weeks for most standard jobs, longer around holiday weekends when trucks book solid. Construction sites running months-long should lock in a recurring service day at booking rather than calling week to week.
Can a porta potty go on gravel or dirt?
Yes, as long as the pad is level and stable enough to keep the unit from tipping. ADA Standards 302.1 requires stable, firm, slip-resistant surfaces for accessible units specifically, and that standard is a good baseline for any placement surface.
What is the difference between a standard unit and a deluxe unit?
A standard unit is a basic non-flushing toilet on a 60 to 70 gallon tank. A deluxe flushable porta potty adds a flushing mechanism and often a sink, priced higher per the table above.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.