What size mobile office trailer do I need?
Most single-super setups run small, roughly the footprint of a standard job box with a desk and a heater. Bigger crews want room for plan tables and a small meeting corner. If you are choosing between a mobile office trailer and a plain box, weight matters: a small unit is light enough for a pickup with a receiver hitch, while a full-length office trailer needs a proper tow vehicle and, once set, blocks and leveling jacks. Ann Arbor sites near the University of Michigan campus and downtown often have tight lay-down space, so measure the lot before ordering anything larger than you need. If the trailer will sit next to a construction dumpster rental or a 30 yard dumpster rental, leave separate clearance for both deliveries so the truck backing in one doesn't block the other.
Does a mobile office trailer come with a bathroom?
Some do, most don't. A mobile office trailer with bathroom built in is the exception, and when it's offered it usually adds weight and a fresh water and holding tank to manage, which means more setup and more service stops. For most Ann Arbor jobsites, it is simpler and cheaper to keep the office trailer dry and add a nearby standard porta potty rental or an ADA accessible porta potty if the crew includes a worker who needs one. OSHA 1926.51(c)(1) sets toilet counts on construction sites by crew size, from one facility for 20 workers or fewer up through larger ratios as headcount grows, and that count applies whether the toilets sit next to the office trailer or across the lot. A deluxe flushable porta potty is a middle option if the crew wants sink and flush without the plumbing complexity of a trailer bathroom.
What fits inside a mobile office trailer interior?
A small unit holds a desk, a couple of chairs, a wall heater or AC unit, and shelving along one side. Step up in length and you get room for a plan table, a second workstation, and a small break area. Interior finish is usually vinyl flooring and paneled walls, built to survive muddy boots and dropped tools rather than look like a corporate suite. If the crew also needs handwashing separate from the trailer, a handwashing station rental or portable sink rental sits well just outside the door, and satisfies 29 CFR 1910.141(d)(2), which requires soap and towels or a hand dryer at wash stations, not sanitizer alone. For sites running paint, coatings or similar contaminants nearby, OSHA 1926.51(f)(1) requires washing facilities specifically for that exposure, separate from the general toilet count.
Can I rent a mobile office trailer near me in Ann Arbor?
Yes. Ann Arbor Porta Pros delivers within the city and to nearby communities, including Ypsilanti, 6.4 miles east, and Pittsfield, 6.1 miles south, along with Scio, 6.6 miles west. Delivery further out, toward Westland at 22.7 miles or Taylor at 30.0 miles, is available but plan for it in your schedule. A roll-off style delivery for a comparable-sized trailer generally needs about 60 feet of straight clearance behind the truck, so tell us about gates, overhead lines or tight alleys before the truck shows up. If your lot also needs temporary fence rental or a light tower rental for security and visibility around the trailer, we can schedule those on the same trip. Sites already running a roll-off dumpster rental or 20 yard dumpster rental should keep the office trailer's entry path clear of the dumpster's swing path, since both need separate approach angles for the delivery truck.
Pricing reference for related site services
Mobile office trailers themselves are quoted per site, but here's what other equipment on the same job typically runs, based on measured rates across the market:
| unit | duration | typical price |
|---|---|---|
| standard porta potty | day | $150 |
| standard porta potty | week | $200 |
| standard porta potty | month | $200 |
| dumpster | week | $600 |
| dumpster | month | $108 |
| storage container | month | $125 |
| fence | day | $50 |
For a full breakdown by rental length, see porta potty rental cost, monthly porta potty rental and dumpster rental cost. If you are pricing a used mobile office trailer for purchase rather than rent, factor in that a rental sidesteps storage between jobs, which matters on Ann Arbor sites with short lay-down windows.
How many porta potties does a jobsite with an office trailer need?
Base it on crew size, not the trailer. OSHA 1926.51(c)(1) sets the ratio: one toilet for 20 workers or fewer, with more units required as headcount rises past 20 and again past 200. See how many porta potties do I need for the full breakdown by crew size.
Do I need a permit to place a mobile office trailer in Ann Arbor?
Placement in the right of way or a public easement needs confirming with the city before delivery. We do not guess at permit rules here. Check porta potty permit requirements for the sanitation-specific version of this question, and confirm trailer placement separately with Ann Arbor's permitting office.
Can a mobile office trailer sit on a residential driveway?
Usually yes if there's clearance, but weight and turning radius matter more than the surface. A small unit is light enough for most driveways; a full-length trailer needs a wider approach. Ask about your specific lot when you request a quote through request a quote.
What's the difference between a mobile office trailer and a storage container with an office add-on?
A mobile office trailer is built to be occupied, with insulation, heat and often AC. A 20ft storage container or 40ft storage container is built to hold materials, not people, though some crews outfit one as a rough office. Compare options at storage container rental.
How fast can Ann Arbor Porta Pros deliver a mobile office trailer?
Turnaround depends on trailer availability and site access, but many Ann Arbor deliveries happen within a few days of booking. For urgent needs, ask about emergency porta potty rental style rush service, which can sometimes apply to trailer scheduling too.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.