Office Trailer & Ground-Level Office Rentals
AT&S ground-level office containers are the ideal solution for creating enclosed office space—large or small—right at your job site. Built from durable Conex (ISO) containers, our ground level offices combine the strength and security you expect with the comfort and efficiency you need. Each unit comes equipped with insulation, electrical, windows, and secure doors, making them a dependable, ready-to-use workspace.
OFFICES + OFFICE/storage COMBOS
All office units
Our office containers combine the rugged strength of a shipping container with the essential features of a fully functional job-site office. Delivered ready to use, each unit includes insulation, electrical wiring, windows, and secure doors—so you can get to work right away.
Storage combo units
Our combo units offer the best of both worlds—dividing the container into two sections: a finished, climate-controlled office space, and an open, secure area for storing tools, materials, or equipment. Perfect for on-site efficiency and convenience.

20’ office

40’ office
Take a virtual tour
Furnishing Packages
BREAKROOM PACKAGE

AMENITIES
- Folding table
- Folding chairs
CAFE PACKAGE

AMENITIES
- Folding table
- Microwave
- Coffee pot
- Trashcan
- Refrigerator
MANAGER’S PACKAGE

AMENITIES
- Premium desk
- Swivel chair
- Cushion folding chair (2)
GET A QUOTE
We provide rentals and sales of storage containers, new and used semi-trailers, and ground-level office units. Contact us today for a quote and fast delivery on your schedule.
Office Rental FAQs
What is a ground-level office?
A ground-level office is a shipping container converted into finished office space that sits directly on the ground, with no stairs or ramp required. American Trailer & Storage builds them from Conex ISO containers and delivers them insulated, wired, windowed, climate-controlled, and ready to work in.
What sizes of portable office does American Trailer & Storage offer?
American Trailer & Storage offers portable offices in 20-foot and 40-foot units, each available as a full office or as an office and storage combination. Floor plans for all four configurations are available on request at 888-765-7771 or sales@atandsonline.com.
What comes standard in an American Trailer & Storage portable office?
Every American Trailer & Storage portable office includes insulation, electrical wiring, windows, secure doors, and climate control. The unit arrives as finished office space rather than a shell requiring on-site build-out.
What is an office and storage combo unit?
A combo unit from American Trailer & Storage divides one container into finished office space at one end and a secure storage area at the other, so a crew keeps tools, materials, and equipment locked in the same unit they work out of. Combos come in both 20-foot and 40-foot lengths.
Can I rent a portable office with furniture included?
Yes. American Trailer & Storage offers three furnishing packages. The Breakroom package includes a folding table and folding chairs. The Cafe package adds a microwave, coffee pot, refrigerator, and trashcan. The Manager's package includes a premium desk, a swivel chair, and two cushioned folding chairs.
Are portable offices heated and air conditioned?
Yes. American Trailer & Storage portable offices are insulated and climate-controlled as
standard, so they stay usable through Midwest summers and winters. Units are delivered to job sites across Kansas City, St. Louis, Springfield, Omaha, Des Moines, and Davenport.
Can I see inside a portable office before I rent one?
Yes. American Trailer & Storage offers a virtual tour of its portable office units, and floor plans for the 20-foot and 40-foot models are available on request. To walk through a unit in person, call the yard nearest you at 888-765-7771.