Construction Porta Potty Rental in Ann Arbor, MI
Construction porta potty rental in Ann Arbor, Michigan puts toilets on the job site for as long as the work runs, sized to the crew under OSHA 29 CFR 1926.51. Call (888) 417-6737, answered 24/7, and we connect you with a provider that serves the site. With a median year built of 1971 (ACS 2020–2024), many jobs here are work on existing buildings, and the same OSHA rule applies.
Updated 2026-10-13
Conditions at a Glance
Climate figures: NOAA 1991–2020 normals from the Ann Arbor Muni Ap, MI station, about 4 miles away.
Conditions for Job Sites
Building in Existing Neighborhoods
About 9.3% of Ann Arbor's housing units were built in 2010 or later (ACS 2020–2024), below the U.S. share of 11.4%, though above the median U.S. place in our data, so most homes predate 2010 and many projects are renovations or additions to existing buildings.
Homes From the 1970s and 1980s
The median year built for Ann Arbor's housing is 1971 (ACS 2020–2024), older than most U.S. places in our data. Housing from that era is now 35 to 55 years old; crews replacing roofs, windows or mechanical systems on it need a toilet on site like any other crew.
Apartments, Townhouses and Rentals
The most common housing type is detached houses, about 42% of units (lower than three in four U.S. places in our data), followed by buildings with five or more units at about 37% (ACS 2020–2024). Apartment and condo projects bring larger crews, and a property manager decides where units go. About 55% of occupied homes are renter-occupied (ACS; owner share lower than nine in ten U.S. places in our data), so property managers and landlords often book the units for renovations and decide where they stand.
DOE's Building America map puts Washtenaw County in the Cold climate region (IECC 2021 zone 5A, PNNL county guide). Winters in this region are long enough that freezing, not heat, is usually the main limit on units that carry water.
Freezing Nights
About 150 nights a year drop to 32°F or below, more than nine in ten U.S. places in our data, so freezing weather covers a large part of the year. Winter job sites need units that keep working through months of freezing nights: ask how the provider keeps holding tanks and any hand-wash water from freezing between service visits.
Lead-Safe Renovation
About 63% of housing units predate 1980 (ACS 2020–2024). Under OSHA’s lead standard (29 CFR 1926.62), workers exposed to lead need adequate hand-washing facilities, and EPA’s RRP Rule covers paint-disturbing work in homes built before 1978; add hand-wash stations to the order on those jobs.
How Many Toilets
OSHA 29 CFR 1926.51(c)(1) sets the minimum number of toilets on a construction site by headcount:
| Number of employees | Minimum toilet facilities |
|---|---|
| 20 or fewer | 1 toilet |
| 20 or more | 1 toilet seat and 1 urinal per 40 workers |
| 200 or more | 1 toilet seat and 1 urinal per 50 workers |
Worked examples, rounding up as the table is usually read: 15 workers need 1 toilet. 45 workers need 2 toilet seats and 2 urinals (45 ÷ 40 = 1.125, rounded up to 2). 210 workers need 5 seats and 5 urinals (210 ÷ 50 = 4.2, rounded up to 5).
With so much multifamily housing here, a 45-person crew on an apartment or condo project is a realistic case: 2 toilet seats and 2 urinals.
Servicing frequency is set with the provider when you book; tell us headcount and shift length. OSHA's job-site toilet table has the full table.
Placement and Access
Put units on firm, level ground the service truck can reach, close to where crews work, clear of crane swing, excavation and vehicle routes, and move them as the work moves.
Federal OSHA or State Plan
Michigan runs an OSHA-approved State Plan, Michigan Occupational Safety and Health Administration (MIOSHA), Michigan Department of Labor and Economic Opportunity, that covers most private-sector workers as well as state and local government workers (osha.gov State Plans, accessed 2026-10-13). State Plans must be at least as effective as federal OSHA, so check the State Plan's construction sanitation rule alongside 29 CFR 1926.51. osha.gov lists some coverage exclusions for this plan; the State Plan page shows which work they affect.
Who to Ask About Local Rules
Ann Arbor is an incorporated city with its own municipal government. For a unit placed in the street, on a sidewalk or in another public right-of-way next to the job site, ask the Ann Arbor city government before you book what applies.
If you rent your home, check with the landlord or property manager before a unit goes on the property.
What to Ask For
- Crew size at the busiest point and shift length (OSHA sets the minimum by headcount)
- Rental term and service frequency
- A spot on site the service truck can reach
- Whether units need to move as the work progresses
- Winter servicing and freeze protection for holding tanks
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Construction Porta Potty Rental in Ann Arbor: Questions
How do I book job-site porta potties in Ann Arbor?
Call (888) 417-6737, answered 24/7, with the site address, dates and headcount. We connect you with a provider that serves Ann Arbor, and the provider confirms units, price, delivery, servicing and pickup. Tell us the units you want; the provider confirms what's available for your site.
How many toilets for a 45-person crew?
2 toilet seats and 2 urinals: 45 ÷ 40 is 1.125, rounded up to 2, which is the usual reading of OSHA's 1926.51 table. For comparison, 15 workers need 1 toilet and 210 workers need 5 seats and 5 urinals.
Does Michigan use federal OSHA or a State Plan?
Michigan runs an OSHA-approved State Plan, Michigan Occupational Safety and Health Administration (MIOSHA), Michigan Department of Labor and Economic Opportunity, that covers most private-sector workers as well as state and local government workers (osha.gov State Plans, accessed 2026-10-13). State Plans must be at least as effective as federal OSHA, so check the State Plan's construction sanitation rule alongside 29 CFR 1926.51. osha.gov lists some coverage exclusions for this plan; the State Plan page shows which work they affect.
Can job-site units stay out all winter in Ann Arbor?
Yes, standard units have no running water to freeze, but with about 150 nights a year at or below 32°F, ask how the provider services them in winter and protects any hand-wash stations.
Don't know where to start?
Call now and tell us about your event or job site. We will help you work out the units you need and connect you with a provider that serves your location.
(888) 417-6737Phones answered 24 hours a day, 7 days a week.