How many porta potties do you actually need?
Start with the crowd, not the guess. OSHA 1926.51(c) sets the construction baseline: 1 toilet for 20 workers or fewer, then 1 toilet seat and 1 urinal per 40 workers as the crew grows past 20, dropping to one per 50 once you hit 200 or more. That ratio is written for job sites, so if you are planning a wedding or a block party in South San Francisco, lean on our how many porta potties do I need guide instead, since crowd math runs differently than crew math. Farms and hand-labor operations fall under a separate rule, OSHA 1928.110, which calls for one facility per 20 employees within a quarter mile walk. If you are staffing a harvest crew, see farm and agricultural restrooms. For construction crews specifically, our OSHA portable toilet requirements page walks the full ratio table. Once you know the count, decide between a standard porta potty rental, a deluxe flushable porta potty, or a full restroom trailer rental if you want sinks on site.
What size and clearance does delivery need?
A standard unit runs about 44 by 48 inches on the ground and stands roughly 92 inches tall, so measure your placement spot before the driver arrives, not after. Confirm the surface is stable, firm, and level, since ADA Standards section 302.1 calls for exactly that kind of ground for any accessible unit, and a tilted unit is a service headache either way. If you are also renting a roll-off dumpster rental for the same project, note that delivery trucks need about 60 feet of straight clearance behind the vehicle to set the box down safely. Leave a clear path from the street to the pad. Gravel, packed dirt, or pavement all work; soft lawn after rain usually does not. If your site has restricted access, mention it during booking so South San Francisco Porta Pros can route the right size truck.
Do you need an ADA-accessible unit?
Yes, if units are clustered for public use. ADA Standards section 213.2 requires at least 5 percent of clustered single-user portable toilets to be accessible, and never fewer than one, whenever you group units together. The accessible unit itself needs a 32 inch clear door opening under section 404.2.3, a 36 inch clear route per section 403.5.1, and a 60 inch turning circle inside per section 304.3.1. Reach controls matter too: section 308.2.1 caps forward reach at 48 inches high and 15 inches low, and section 309.4 requires operable parts that work with one hand and no more than 5 pounds of force. Skip this step and you are not just out of compliance, you are turning guests away. Check our ADA accessible porta potty page for unit specs, and budget accordingly using the porta potty rental cost breakdown before you finalize a headcount.
When should you book and what does it cost?
Book early. Weekend events, especially anything near a graduation or festival date, fill fast across the peninsula, and South San Francisco Porta Pros also serves crews in San Bruno, 5.5 miles southwest, and Millbrae, 7.2 miles south, which pulls from the same delivery fleet. A standard unit typically runs $100 to $350 for a single day and $130 to $500 for a full week, while an ADA unit typically runs $200 to $400 for a single day. Delivery fees sit separately from the unit rate.
| unit | day | week | month |
|---|---|---|---|
| standard | $100 - $350 | $130 - $500 | $125 - $325 |
| ada | $200 - $400 | $185 - $240 | - |
| deluxe | $85 - $1,200 | $150 - $290 | - |
Weekend rates for a standard unit run about $125 to $400 depending on unit type and add-ons. For longer jobs, check monthly porta potty rental or porta potty rental per day to compare against your project length. Service frequency also affects your total: 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 40 hour week, so busier sites need more frequent pumping. If your event includes food service, pair your restroom order with a handwashing station rental, since 29 CFR 1910.141(d)(2) requires soap and towels or a hand-drying device at any washing station, not hand sanitizer alone. Contractors applying paints or coatings on site should also review OSHA 1926.51(f)(1), which requires washing facilities specifically where those contaminants are present. For general questions before you commit, our FAQ and request a quote pages cover most of what comes up during booking in South San Francisco.
How far in advance should I book a porta potty in South San Francisco?
Aim for 7 to 10 business days for a standard event, longer for weekends near holidays. Construction jobs with recurring service should book before the first work day. Peak season fills faster, so early booking protects your date and unit selection.
Do I need a permit to place a unit on the street?
Placement in the public right of way needs confirming with the city before delivery. Rules vary by location and property type. Ask South San Francisco Porta Pros during booking, and check our porta potty permit requirements page for general guidance.
How often are units cleaned during a rental?
Weekly service is the standard baseline for moderate use, per ANSI/PSAI Z4.3. High-traffic events or job sites often need two or three visits weekly. See how often are porta potties cleaned for details on adjusting frequency.
What is the difference between a standard and deluxe unit?
A deluxe flushable unit adds a flush mechanism and often a sink, while a standard unit uses a 60 to 70 gallon holding tank without flush features. Deluxe units cost more but suit weddings and longer events better than standard units.
Can I rent a handwashing station separately from restrooms?
Yes. Handwashing stations rent independently and pair well with food vendors or paint and coating work covered under OSHA 1926.51(f)(1). Check handwashing station rental or portable sink rental for unit options and pricing.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.