How many porta potties does a construction site need?
A construction site needs 1 toilet for 20 or fewer workers under OSHA 29 CFR 1926.51(c) Table D-1. Sites with 20 or more workers need 1 toilet seat and 1 urinal per 40 workers, and 200 or more need 1 seat and 1 urinal per 50. Frisco residential sites also need 1 facility per 5 building sites.
Crew-size calculator (OSHA Table D-1)
| Crew size | OSHA minimum | Our recommendation |
|---|---|---|
| 1–20 | 1 toilet | 1 standard unit; 2 in July–August heat on long shifts |
| 21–40 | 1 seat + 1 urinal | 2 standard units (each has a seat and a urinal) |
| 41–80 | 2 seats + 2 urinals | 2–3 units + 1 handwash station |
| 81–160 | 3–4 seats + urinals | 4–5 units + 2 handwash stations |
| 200+ | 1 seat + 1 urinal per 50 | Custom route; call dispatch |
Official text: OSHA 29 CFR 1926.51. Read the full construction porta potty rules guide.
What does Frisco require on residential job sites?
The City of Frisco requires 1 portable sanitation facility per 5 building sites, placed no more than 200 feet walking distance apart, according to its Residential Inspection Checklist (February 2026). Facilities must be on site at the start of construction and kept serviced. The same checklist requires trash containers and erosion control.
Source: Frisco Residential Inspection Checklist. Inspectors can flag a missing or unserviced unit. A builder with 12 lots on one Frisco street needs at least 3 units, spaced so no lot is more than 200 feet away.
Where should the porta potty go on a jobsite?
Put the jobsite porta potty on firm, level ground inside the lot line, within about 25 feet of where a service truck can park. Keep it off the sidewalk, street and alley, away from the dumpster swing path, and within 200 feet of each lot it serves. Stake it on open lots from March through June.
- Mark the spot with a cone or text a photo to dispatch.
- Keep 10 feet from the foundation forms so the truck does not block concrete pours.
- Tell us the gate code and on-site contact; the driver calls 30–60 minutes ahead.
- Blackland clay turns soft after rain — choose a gravel drive or road base pad.
How does jobsite billing and servicing work?
Jobsite rentals bill in 28-day cycles. The first cycle includes the one-time delivery and pickup fee; later cycles are the unit rate only. Weekly service is included. Each visit is logged with a date and time you can show an inspector. Billing stops the day you call for pickup.
| Item | How it works |
|---|---|
| Billing period | 28-day cycle, auto-billed to card or emailed invoice |
| Service | Weekly pump, clean, restock — logged |
| Extra service | About $45–$85 per visit, call by noon the day before |
| Move a unit to the next lot | Ask dispatch; a relocation fee may apply |
| Pickup | Call or email; collected in 1–2 business days |
How much does a construction porta potty cost in Frisco?
A construction porta potty in Frisco costs about $175–$275 per 28-day cycle with weekly service, plus a one-time delivery and pickup fee of about $45–$110. Builders with 3 or more units, or jobs running 3 or more cycles, get a lower multi-unit rate. A same-day rush fee applies only to same-day orders.
See the full cost guide and long-term rental terms.
Questions renters ask us
How many porta potties does my crew need under OSHA?
OSHA 29 CFR 1926.51(c) Table D-1 sets the minimum. 20 or fewer workers need 1 toilet. 20 or more workers need 1 toilet seat and 1 urinal per 40 workers. 200 or more need 1 seat and 1 urinal per 50. Check your contract and permit for stricter rules.
Does Frisco require a porta potty on residential construction sites?
Yes. The City of Frisco Residential Inspection Checklist (February 2026) requires 1 sanitation facility per 5 building sites, no more than 200 feet walking distance apart. Facilities must be on site at the start of construction and kept serviced. Confirm details with Frisco Building Inspections.
Do I need a handwashing station on my jobsite?
OSHA 29 CFR 1926.51(f) requires washing facilities where workers handle paints, coatings, herbicides or other harmful substances. Many general contractors require a sink on every jobsite anyway. A PolyJohn Bravo two-station sink holds 22 gallons and is serviced on the same weekly visit.
What does a 28-day billing cycle mean?
A 28-day cycle is our billing period for jobsite and long-term rentals. The unit can stay as long as you need it. Every 28 days on site starts a new cycle at the same rate, minus the one-time delivery fee. Billing stops on the day we pick the unit up.
Can you stake the unit down so it does not blow over?
Yes. Dennis Rental Works can stake or strap units on open jobsites and windy lots at no charge when requested. North Texas spring storms can bring strong gusts, so anchoring is a good idea on bare lots from March through June.
Can you do a better price for a long rental or several units?
Yes. Dennis Rental Works discounts multi-unit orders and jobs expected to run three or more 28-day cycles. Builders with several lots in one Frisco subdivision can bundle units onto one route and one invoice. Ask for the multi-unit rate when you call.
Can the porta potty go on the street or sidewalk in Frisco?
Keep it on private property. Units on a Frisco sidewalk, street or alley can block access and draw a code complaint. If private property is not possible, ask the City of Frisco about right-of-way use before delivery.
How do I end my rental and get it picked up?
Call (469) 326-5556 or email dispatch when you are done. Dennis Rental Works does not pick up long-term units automatically, so billing continues until you request pickup. Billing stops on your pickup request date, and the truck collects the unit within 1–2 business days.
