How Much Does a Porta Potty Cost Per Month?
Pricing depends on unit type, how many you need, and how long the job runs. A standard porta potty rental in Columbia falls between 125 and 325 dollars a month, and most renters land around 200. That is a different math than a short job: a single standard unit by the day runs 100 to 350 dollars, and weekly sits between 130 and 500, a detail covered further in our porta potty rental per day breakdown. Once you go monthly, the per-day cost drops hard, which is why builders on multi-month jobs almost always ask for the monthly rate. Delivery is billed separately, typically 120 to 420 dollars for a monthly delivery fee, and that covers drop-off and pickup logistics, not ongoing service. If your project needs an ADA-compliant unit, ADA accessible porta potty rental weekly rates run 120 to 240 dollars, which is worth comparing against a standard unit, or even a portable restroom rental package, before you commit to a full month. For a deeper breakdown of daily versus long-term math, see our porta potty rental cost guide, or start from our portable toilet rental overview if you are still comparing unit types.
| Unit type | Day | Week | Month |
|---|---|---|---|
| Standard | 100-350 | 130-500 | 125-325 |
| ADA accessible | 200-400 | 120-240 | not published |
| Deluxe flushable | 85-1200 | 150-290 | not published |
Why Choose Long Term Portable Toilet Rental Over Weekly?
Long term portable toilet rental saves money once a project runs past a few weeks, because the monthly rate spreads service and delivery cost over more days. A construction crew working a Columbia job site for three months, for instance, pays one monthly rate per unit instead of resetting a weekly contract twelve times, the same logic that applies to a roll-off dumpster rental on the same site. Service visits still follow the ANSI/PSAI Z4.3 baseline of one cleaning per week for units seeing up to 10 users across a 40 hour week, so a long rental does not mean less cleaning, it means steadier billing. This is the model most construction site services jobs use, especially anything tied to home renovation porta potty needs that drag past the original timeline. If your crew count changes mid-project, Columbia Porta Pros can add or drop units without breaking the monthly agreement, and can pair the order with a storage container rental if the site also needs secure lockup. Worksites under OSHA 1926.51(c)(1) need at least one toilet facility for every 20 workers, so before you lock in a monthly count, run your crew size against that ratio. Our how many porta potties do I need guide walks through the math by headcount, and our OSHA portable toilet requirements page covers the full ratio table.
What Affects the Monthly Rate?
Unit type is the biggest lever. A deluxe flushable porta potty can run anywhere from 85 to 1200 dollars a day depending on features, and that spread carries into weekly and monthly quotes too. Site access matters just as much: a standard unit measures about 44 by 48 inches on the ground and stands roughly 92 inches tall, so tight urban lots in downtown Columbia sometimes need a smaller footprint plan or a different placement than a rural site outside Lexington, 23.0 miles west, a question our service areas page can help sort out. Distance from our yard factors into delivery pricing, and jobs farther out, like Cayce at 17.0 miles southwest or West Columbia at 14.1 miles west, may carry a slightly different delivery fee than a job inside city limits. Service frequency is negotiable past the ANSI/PSAI Z4.3 baseline if your crew count runs high, and our how often are porta potties cleaned page explains what drives that schedule. For events that only need restrooms for a weekend inside a longer rental window, our event restroom rental team can blend a monthly base unit with event-day extras. Placement also affects the quote: our porta potty placement guide covers ground clearance and access needs before delivery day.
Do I Need a Permit for a Long Term Rental?
Placement in the public right of way needs confirming with the city of Columbia before delivery, since permit rules vary by location and were not part of the standard rental agreement. If your unit sits entirely on private property, this is usually simpler, but any placement touching a sidewalk, street, or public easement should get checked first. Our porta potty permit requirements page walks through what to ask the city, and our dumpster permit requirements page covers the same question for roll-off units, since long construction jobs often need both. If your monthly rental includes a temporary fence rental around the unit, fencing placement can carry its own separate rule, so it is worth asking about both at once. Handwashing stations are frequently required alongside toilets on active job sites, and OSHA 1926.51(f)(1) specifically requires washing facilities where employees apply paints, coatings, herbicides or insecticides. A handwashing station rental added to your monthly contract covers that requirement cleanly, and a portable sink rental is worth asking about if your crew needs a second wash point.
How much does a porta potty cost per month?
Standard units typically run 125 to 325 dollars a month in Columbia, with most jobs landing near 200. The exact number depends on unit type, headcount, and how far the delivery travels. ADA units and deluxe flushable models price differently, so get a quote matched to your actual unit mix.
Is monthly cheaper than renting weekly four times in a row?
Usually, yes. Weekly standard rentals run 130 to 500 dollars, and four separate weekly contracts almost always cost more than one monthly agreement. Monthly pricing also avoids the hassle of renewing a short-term contract every seven days on a multi-month job.
How many units do I need for a long construction job?
OSHA 1926.51(c)(1) sets a baseline of one toilet facility per 20 workers on a job site. Crew size, shift overlap, and site layout all affect the real number, so check our sizing guide before locking in a monthly unit count.
Does the monthly price include cleaning service?
Yes, service follows the ANSI/PSAI Z4.3 standard of one visit per week for units seeing normal use. Higher headcounts or heavier use may need more frequent service, which Columbia Porta Pros can build into the monthly agreement.
Can I switch from monthly back to weekly if my job finishes early?
Yes, most contracts allow adjustment if your timeline shifts. Talk to Columbia Porta Pros before the job wraps so pickup and final billing align with your actual end date instead of the original monthly estimate.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.