How Much Does A Mobile Office Trailer Cost To Rent?
Pricing depends on size and how long you need it. This page's table covers the mobile office box itself; if you're pairing it with portable restroom rental or a restroom trailer rental for a jobsite with no plumbing, budget separately for those. Delivery is its own line item, and most jobs in Concord also need a temporary power pole or a light tower rental if the trailer sits somewhere without power access.
| item | day | week | month |
|---|---|---|---|
| delivery fee | 150 | 100 | 172 |
| service fee | 175 | 60 | 150 |
Delivery fees vary by distance and site access. If you're near Pleasant Hill, about 5.3 miles west of Concord, or Clayton, roughly 5.1 miles southeast, expect a shorter drive charge than a job out toward San Ramon, which sits 22.4 miles south. Ask for a quote once you know your address and site conditions.
What Comes Inside A Mobile Office Trailer?
Interior layout depends on the model, but most units include a desk area, shelving, a small HVAC unit, and enough headroom for two or three people to work standing up. Some mobile office trailers come as a bare enclosed box for storage and light admin work. Others are built out with a bathroom stall, a sink, and a holding tank, which is closer to a holding tank rental setup than a plain office box. If your crew needs a real restroom on top of office space, a 2 stall restroom trailer or 4 stall restroom trailer parked nearby is usually cheaper than a combo unit.
Weight matters for site planning and for the tow vehicle. A small mobile office trailer with an empty interior is lighter than one loaded with a bathroom and water tank, so tell us upfront if you need the bathroom-equipped version so we route the right rig and driver. Concord sites with tight alley access or narrow gate openings should mention that when booking, since some larger units can't make sharp turns without a longer straight approach.
Can I Rent A Used Mobile Office Trailer?
We rent, we don't sell used units retail, so if you're comparing a mobile office trailer sale against a rental, know that renting avoids maintenance and storage between jobs. A rental also lets you swap up to a bigger unit mid-project if your crew grows, which a purchased trailer doesn't allow without another transaction. For short jobs under a month, renting almost always beats buying on total cost. If you're set on ownership, that's outside what we offer, but for anything under a year of use, a rental office trailer plus a construction dumpster rental and temporary fence rental covers most site needs without tying up capital in equipment you'll only use once.
Where Can I Park A Mobile Office Trailer On My Site?
Placement depends on ground stability and access for the delivery truck. ADA Standards section 302.1 calls for stable, firm, slip-resistant surfaces on accessible routes, and that same principle applies to where you set the trailer steps and any ramp. If your office trailer needs to be accessible, ADA Standards section 405.2 caps ramp slope at 1:12, so plan the approach with that grade in mind. Most Concord jobsites have room near the entrance gate, but sites with tight lot lines should confirm setback and clearance before delivery day.
If you're not sure how placement rules apply to your specific lot, our porta potty placement guide covers the same clearance logic that applies to any rented unit on a work site, and it's worth a read even though it's written around toilets. Municipal rules on where a trailer can sit in the public right of way, if your site borders one, still need confirming directly with the City of Concord since placement rules can vary block to block.
Do I Need A Restroom With My Mobile Office Trailer?
Not always, but if your crew is working a full shift on-site, OSHA 1926.51(c)(1) sets toilet ratios by headcount: one facility for 20 workers or fewer, scaling up from there. An office trailer with no plumbing doesn't satisfy that on its own. Pairing it with a standard porta potty rental or a deluxe flushable porta potty next to the trailer solves that cheaply. OSHA 1926.51(a)(1) also requires potable water at the jobsite, which most office trailer setups handle with a jug cooler or a paired portable sink rental if you want running water without full plumbing.
For crews doing painting, coating or pest treatment work near the office trailer, OSHA 1926.51(f)(1) requires washing facilities specifically for those contaminant exposures, so a handwashing station rental nearby covers that requirement directly.
How long can I rent a mobile office trailer for?
However long the job runs. Day, week and month rates all apply, and month-long rentals bring the per-day cost down. Most construction jobs in Concord book monthly and extend as needed; short event use books by the day or week instead.
Does a mobile office trailer need a generator?
Not always. Many jobsites have grid power already, but if not, pair the trailer with a temporary power pole so the HVAC and lighting inside stay running without a separate generator.
What size mobile office trailer do I need?
Depends on crew size and use. A small trailer fits one or two desks; larger units handle site meetings and plan review. Tell us your headcount when you request a quote and we'll size it right.
Is there a mobile office trailer with a bathroom option?
Some builds include a bathroom stall and holding tank. It's often simpler and cheaper to rent the office box separately and add a porta john rental alongside it, especially for shorter jobs.
Can I get a mobile office trailer near me in Concord fast?
Yes, for most standard sizes. Delivery timing depends on your address and the unit you need; check our service areas page or call for same-week availability.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.