Office trailers · Seattle, WA
Office Trailers in Seattle, Washington
Seattle never stops building: tech campuses from South Lake Union to the Spring District, the waterfront rebuild after the viaduct came down, light-rail extensions in three directions, and King County housing programs trying to keep pace. Office trailers work tower sites, transit staging yards, and campus projects across the city.
Urban sets with crane assists, street-use permits, and timed deliveries are everyday work for our Seattle crews. Our network covers all 59 city ZIP codes here, and stock singles typically set inside two weeks.
- Market
- Seattle, WA · King County
- Population
- 755,000
- Delivery coverage
- 59 ZIP codes
- Available configurations
- 8×20 singles to 24×60 double-wides, new and used
Typical Office Trailer Prices in Seattle
| Size | Sq Ft | Typical Monthly Rental | Best For |
|---|---|---|---|
| 8×20 | 160 | $250–$500 | Single office, small crews |
| 8×24 | 192 | $300–$550 | Office plus small meeting space |
| 10×40 | 400 | $400–$700 | Two offices or office + plan room |
| 12×44 | 528 | $450–$800 | Project teams, restroom option |
| 12×60 | 720 | $500–$900 | Multiple offices, larger crews |
| 24×60 | 1,440 | $700–$1,200 | Double-wide HQ, classrooms, clinics |
Purchase: new $20,000–$70,000+ · used $8,000–$35,000 · delivery and setup $1,000–$5,000 each way (distance and site dependent). Typical national ranges. Your quotes reflect local rates, spec, and availability.
Every Way to Get an Office Trailer in Seattle
Office Trailer Rental in Seattle
A rental puts a working office on a Seattle site inside two weeks without touching your capital budget. Expect $250 to $500 per month for single-office units and $700 to $1,200 for double-wides across Washington, before delivery and setup. Quotes come back itemized so the total is visible up front, not discovered on the invoice.
Buy a New Office Trailer in Seattle
Buying makes sense past the two-to-three year mark, for permanent yard offices, or when you would rather own the asset. New units run $20,000 to $70,000 and up depending on size and fit-out, delivered and set to your Seattle site with factory warranties. Financing is standard; ask and the quote lays out purchase and finance terms side by side.
Used Office Trailers in Seattle
A clean used office trailer does the same job as new for half the money: typically $8,000 to $35,000 depending on size, age, and condition. The best value is usually refurbished fleet stock, units we have maintained through their rental life and refreshed before sale. The used buying checklist guide covers what to inspect before money moves.
Long-Term Leasing in Seattle
For school-year classrooms, multi-year projects, and semi-permanent offices in Seattle, a lease locks a lower rate for a fixed term, often with a buyout option at the end. Ask for 12/24/36 month pricing in your request and compare it against straight rental: on long durations the saving is substantial.
Who Uses Mobile Offices in Seattle
The same fleet serves very different jobs: construction field offices, school and campus overflow, temporary clinics, permit and inspection offices, seasonal retail, and event operations across the Seattle area.
Office Trailer Delivery Across Seattle
We deliver and set up office trailers across King County, covering all 59 Seattle ZIP codes:
Show all 59 ZIP codes
Office Trailers Across Washington
Also serving Bellevue, Renton, Kent, Federal Way, Everett, Tacoma, Yakima, Vancouver, Spokane and the rest of the state: see all Washington locations.
Seattle Office Trailer FAQs
Do I need a permit to place an office trailer in Seattle?
It depends on placement, duration, and what your site is zoned for. Rules are set locally, so start with the Seattle building department (King County). Active construction sites usually cover a jobsite trailer under the project's existing permits, while longer placements on commercial lots may need a temporary-use permit. Our teams place units in King County regularly and will flag what applies to your site. The permits guide covers the basics state by state.
How fast can a trailer be delivered in Seattle?
For in-stock units, 3 to 10 business days from signed agreement to delivery is typical across Washington, and metro areas like Seattle sit at the faster end because our depots stage inventory nearby. Custom configurations, restroom plumbing, and double-wide units add lead time. Tell us your must-have date in the quote form and we will confirm what is deliverable.
What is included in an office trailer rental?
The base unit with HVAC, lighting, and electrical rough-in is standard. Steps or ramps, furniture, skirting, tie-downs, and restrooms are usually line items. Delivery, setup, and return are quoted separately. Your Seattle quotes come back itemized, so check what each option bundles: the cheapest monthly rate is not always the cheapest total.
How secure are office trailers on a jobsite?
Standard units come with lockable steel doors, and window security screens are available. Most contractors in Seattle add hasp locks, window bars, or an alarm for laptops and plans left overnight. If theft is a live concern on your site, say so in the quote request and we will spec heavier doors and shutters.
What does delivery and setup involve?
We truck the unit in, set it on blocking, level it, and install steps or ramps. You need reasonably firm, level ground and clear access for a truck and trailer, roughly a 12 ft wide path and overhead clearance. Raise site prep questions in the quote form and our Seattle team will flag anything unusual before delivery day.
Guides Worth Five Minutes
Office Trailer Sizes and Floor Plans: 8×20 to Triple-Wide
Every standard office trailer size with square footage, realistic capacity, and the floor-plan logic that stops you renting the wrong unit.
Read the guide →
Office Trailer Permits: State-by-State Basics
When office trailers need permits, when they do not, and how to get the answer for your site in one phone call.
Read the guide →
Office Trailer Rental Costs in 2026: Real Prices by Size
What office trailers actually rent for in 2026, size by size, plus the delivery, setup, and add-on charges that decide your real total.
Read the guide →