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How many units do you actually need?
Start with worker or guest count, then check it against how many porta potties do I need for the full breakdown. OSHA 1926.51(c) sets the baseline for construction sites: 1 toilet for 20 workers or fewer, then 1 toilet seat and 1 urinal per 40 workers once you pass 20. At 200 or more workers, that ratio drops to one seat and one urinal per 50. If this is a general industry workplace rather than a construction site, the ratio comes from 1910.141(c)(1)(i) instead, so know which category you fall under before you order. Events run differently. There is no fixed OSHA ratio for a wedding or festival, but service crews commonly plan around one unit per 75 to 100 guests over four hours. If you are farming or doing hand-labor agricultural work near Cary, 1928.110 sets a separate standard: one facility per 20 employees, reachable within a quarter mile walk. Match your unit count to the actual crew or guest number, not a guess, and check standard porta potty rental for what a single unit includes before you multiply.
Where should the units go?
Placement decides whether the rental works or becomes a daily headache. A standard unit runs about 44 by 48 inches on the ground and stands roughly 92 inches tall, so measure the spot before delivery day, not after the truck shows up. The surface needs to be level and firm; ADA Standards 302.1 calls for stable, firm and slip-resistant ground, which matters even outside a strictly ADA unit because a tilted toilet is a service call waiting to happen. Leave a clear path at least 36 inches wide per ADA Standards 403.5.1, and if you are staging a roll-off dumpster alongside your restrooms, the delivery truck needs about 60 feet of straight clearance behind it to set the container down safely. Our porta potty placement guide covers sun exposure, wind, and how far from a building entrance is too far. If the unit sits in the public right of way anywhere along a Cary street or sidewalk, that placement needs confirming with the city before delivery, since right-of-way rules vary and we are not going to guess at one here. For anything near a Cary construction site, pair this with construction site services so fencing, lighting, and restrooms all land in the same conversation.
What does service frequency need to look like?
ANSI/PSAI Z4.3, the industry standard for portable sanitation, sets one service visit per week as the baseline for up to 10 users over a standard 40 hour work week. More users or a multi-day event means more visits, not the same visit stretched thinner. Check how often are porta potties cleaned if your job runs long hours or weekends, because a crew working a Saturday shift in Cary still needs the tank serviced on schedule. Water matters too: OSHA 1926.51(a)(1) requires an adequate supply of potable water at any place of employment, which is a separate requirement from the toilet itself. If your crew is applying paint, coatings, herbicides or insecticides, 1926.51(f)(1) kicks in and requires washing facilities beyond a standard porta potty, so add a handwashing station rental or portable sink rental to the order. Under 29 CFR 1910.141(d)(2), any washing facility needs soap and a towel or hand-drying device; hand sanitizer alone does not satisfy that rule, so do not substitute a hand sanitizer station rental where a real sink is required.
Does the job need an ADA unit?
If units are clustered on one site, at least one has to be accessible under ADA Standards 213.2, which sets a minimum of 5 percent of clustered units, never fewer than one. An ADA accessible porta potty needs a 32 inch clear door opening per ADA Standards 404.2.3 and a 60 inch turning circle inside per ADA Standards 304.3.1. Reach ranges matter too: ADA Standards 308.2.1 caps a forward reach at 48 inches high and 15 inches low, and door hardware has to work with one hand and no more than 5 pounds of force under ADA Standards 309.4. If a ramp is involved, ADA Standards 405.2 limits the slope to 1:12. Skipping this on a public event in Cary, or on any job open to the public, is the most common compliance gap we see. Pair your accessible unit with the ADA restroom requirements page before finalizing your order, and budget accordingly using the table below.
| unit | day | week | month |
|---|---|---|---|
| standard | $100 - $350 | $130 - $500 | $125 - $325 |
| ada | $200 - $400 | $240 - $400 | - |
| deluxe | $85 - $1,200 | $150 - $290 | - |
Delivery fees run separately, typically $100 to $150 for a day rental and $50 to $150 for a week. For a full cost walkthrough, see porta potty rental cost or monthly porta potty rental if the job runs long. Crews working near Morrisville, about 5.7 miles north of Cary, or Apex, 8.2 miles southwest, use the same checklist since site prep does not change much across town lines.
How far in advance should I book a porta potty in Cary?
Book standard units a few days out when possible, but same-day delivery is often available through emergency porta potty rental. Events and multi-unit construction jobs should book further ahead since ADA units and trailers have fewer units in rotation.
Do I need a permit to place a porta potty in Cary?
Sometimes, depending on where the unit sits. Placement on private property is usually straightforward; anything in the right of way needs checking with the city first. See porta potty permit requirements for what to ask when you call.
Can I rent just one porta potty for a weekend event?
Yes. A single standard unit works for small gatherings, and weekend rates are common for short events. Check portable restroom rental for options sized to a backyard party or small job site in Cary.
What is the difference between a standard and deluxe unit?
A deluxe unit typically adds features like a foot pump sink or better ventilation, while a standard unit covers the basics with a 60 to 70 gallon tank. Compare both on deluxe flushable porta potty before deciding.
Should I choose a restroom trailer instead of porta potties?
For weddings, corporate events, or any job wanting climate control and running water, a trailer usually beats standalone units. Start with restroom trailer rental to compare stall counts and layouts.
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Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.