What size mobile office trailer do I need?
Small mobile office trailers run tight on square footage but they're the right call for a solo super or a two-person estimating team, and they thread onto lots that a bigger unit can't reach. Bigger crews want more desk space, a plan room, and maybe a small restroom built in. If you're pairing the trailer with jobsite sanitation rather than a built-in bathroom, a nearby standard porta potty rental or a deluxe flushable porta potty covers the crew without adding plumbing weight to the trailer itself. Delivery access matters more than people expect: a roll-off style delivery needs roughly 60 feet of straight clearance behind the truck to back in and drop safely, and the same clearance rule applies to most office trailers on tandem axles. If your Gresham site sits on a tight urban lot, walk that clearance before you book. We also handle storage container rental alongside the office trailer, since most contractors want a place to lock up tools within a few steps of the desk.
Mobile office trailer with bathroom or separate porta potty setup?
A mobile office trailer with bathroom saves the crew a walk, but it adds plumbing, a holding tank, and real weight to a unit that already has to sit level on uneven ground. Most Gresham job sites split the difference: office trailer for paperwork and phone calls, portable restroom rental units for the crew, and an ADA accessible porta potty if the site brings in visitors or subs with accessibility needs. ADA Standards section 213.2 requires that at least 5 percent of clustered single-user toilet units be accessible, and never fewer than one, so this isn't optional once you've got several units on one lot. If your office trailer setup does include a bathroom, remember OSHA 1926.51(c) still governs how many toilet facilities the jobsite needs overall relative to headcount, separate from what's inside the trailer. For sites running paint, coatings, or similar work, OSHA 1926.51(f)(1) requires washing facilities for anyone applying paints, coatings, herbicides or insecticides, so a nearby handwashing station rental or portable sink rental covers that requirement without retrofitting the trailer.
Mobile office trailer weight and delivery access
Weight is the detail people skip until delivery day. A loaded office trailer, especially one with a bathroom or a plan room full of drawings, sits heavier than most contractors guess, and that weight decides what kind of tow vehicle and what kind of ground the delivery crew needs. Soft or sloped ground in Gresham after a wet stretch can bog a delivery truck before it ever reaches the pad. Confirm your access route the same way you'd confirm it for a roll-off dumpster rental or a construction dumpster rental: straight approach, firm ground, and enough clearance to swing the trailer into position without re-hooking three times. If your site also needs lighting for early starts or late finishes, a light tower rental or a temporary power pole solves power before the trailer's own hookup is even live. For sites near Troutdale, about 4.7 miles northeast of Gresham, or Happy Valley, roughly 8.1 miles southwest, the same delivery clearance rules apply, so don't assume a smaller-town lot means easier access.
Should I rent or look at a used mobile office trailer for sale?
Renting wins for anything under a year because you're not carrying maintenance, storage, or resale risk once the job wraps. A used mobile office trailer for sale can make sense for a company running back-to-back projects for years, but most Gresham contractors on a single job, even a long one, come out ahead renting month to month and swapping units if the project scope changes. If you're comparing costs, the mobile office trailer rental decision usually gets weighed against storage container rental cost and general construction site services pricing, since the office is one line item in a bigger site setup that includes fencing, sanitation, and waste. A temporary fence rental or chain link temporary fence around the trailer and secure storage protects the investment either way, rented or owned.
How much does a mobile office trailer cost to rent in Gresham?
| item | day | week | month |
|---|---|---|---|
| storage container | - | - | $100 to $250 |
| delivery fee | $100 to $500 | $100 to $150 | $120 to $420 |
| service fee | $100 to $300 | $100 to $220 | $100 to $300 |
Delivery and service fees vary by distance and site access, and they stack on top of whatever the trailer itself runs. Ask for a written breakdown before the trailer ships so you're not guessing at total cost when the invoice lands.
Frequently asked questions
Do I need a permit for a mobile office trailer in Gresham?
Placement in the public right of way or on certain lot types needs confirming with the City of Gresham before delivery. We don't guess at permit rules here. Check with the city's permitting office directly, and see our porta potty permit requirements page for the general logic that applies to temporary site structures too.
How wide does a mobile office trailer interior feel compared to a jobsite trailer?
Interior width depends on trailer model, but expect enough clear floor for a desk, a plan table, and walking room, not open-plan space. If ADA access matters for site visitors, ADA Standards section 403.5.1 requires a minimum 36 inch clear route and section 404.2.3 requires a 32 inch clear door opening, both worth checking against your specific unit.
Can I rent a mobile office trailer for just a few weeks?
Yes. Most contractors book by the week or month depending on project length, and short-term rentals are common for punch-list phases or inspections. Confirm minimum rental length when you book, since terms vary by unit availability in Gresham.
What's near my mobile office trailer setup that I should also plan for?
Most sites pair the office trailer with sanitation, fencing, and waste removal. Check how many porta potties do I need and dumpster sizes and dimensions to round out the site plan before your first delivery date.
Does Gresham Porta Pros deliver mobile office trailers near me outside Gresham proper?
Yes, we cover surrounding cities including Troutdale and Happy Valley, and can quote Milwaukie at roughly 12.4 miles southwest. Check service areas or request a quote with your exact address for a delivery timeline and access check.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.