A 20 Foot office container gives growing teams a finished workspace without the cost, permits, and timeline of stick-built construction. It arrives as a single steel unit, sits on almost any flat surface, and can be relocated when the project moves. For contractors, event operators, and businesses that need square footage fast, it is one of the most practical office solutions available.
This guide explains what a 20 Foot office container includes, who buys one, how buying compares to renting, what drives the price, and how to pick the right configuration. Each section is written to stand on its own, so you can jump straight to the answer you need.
What Is a 20 Foot Office Container?
A 20-foot office container is a shipping container converted into a self-contained, move-in-ready office. It is built from a heavy-duty Corten steel CONNEX box and finished with insulated, drywalled walls, flooring, climate control, lighting, and electrical — so it works as a portable or semi-permanent workspace rather than a storage unit.
Unlike a trailer, the office sits inside a single welded steel shell with a built-in lockbox, which makes it secure and easy to close up between shifts. The same frame Aztec uses for its storage containers carries the office build, so the structure is rated for stacking and heavy use.
20 Foot Office Container Specifications
The numbers below reflect a standard 20 Foot office unit. Custom builds can change door placement, window count, and interior layout, but the exterior footprint stays the same.
| Specification | Measurement |
| External Length | 20′ 0″ (6.10 m) |
| External Width | 8′ 0″ (2.44 m) |
| External Height | 8′ 6″ (2.59 m) |
| Internal Length | 19′ 8″ (5.99 m) |
| Internal Width | 7′ 8.5″ (2.35 m) |
| Internal Height | 7′ 10″ (2.39 m) |
What’s Included in a 20 Foot Office Container?
A 20ft office container comes complete with the interior fitted out. Standard equipment: • Tile floor suitable for daily foot traffic
- Interior walls framed, insulated, and sheetrocked
- Personnel door (front or side) with secure lockbox
- Windows for natural light
- Air circulation by ventilation
- Electrical wiring, outlets, and lights
- Heating and air conditioning
- Restroom facilities not needed
Who Buys a 20 Foot Office Container?
The 20 Foot Shipping Container is the most common office footprint because it balances usable space with a compact exterior.
- Construction and trades: a jobsite office for plans, meetings, and crew check-ins that relocates with the project.
- Events and venues: a ticketing, staff, or operations booth for festivals, races, and seasonal sites.
- Industrial and logistics yards: a dispatch, security, or supervisor office placed close to the work.
- Growing businesses: extra office square footage in a back lot without a building permit for new walls.
- Remote operations: a self-contained workspace at agricultural, energy, or research sites with limited facilities.
Buying vs. Renting a 20 Foot Office Container
Whether you buy or rent depends on how long you need the office and where you are located. Sales are available nationwide, while rentals are offered within California.
| Factor | Buying | Renting |
| Best for | Long-term or permanent use | Short-term or one-off projects |
| Cost shape | One-time purchase | Recurring monthly payment |
| Ownership | You keep the asset | Returned at term end |
| Availability | Nationwide | California |
| Customization | Full build-to-spec | Limited to stock units |
How Much Does a 20 Foot Office Container Cost?
There is no single sticker price for a 20ft office container, because the final cost is driven by how the unit is built and where it is going.
- Condition: new (one-trip) units cost more than refurbished used units.
- Customization: extra windows, a restroom, partitions, or upgraded finishes raise the price.
- Location: Your city and state affect availability and final pricing.
- Buy vs. rent: a purchase is a one-time cost; a rental is billed monthly.
Because these variables move the number significantly, the most accurate way to budget is to request a quote for your exact configuration. Call Aztec Container at 1-800-399-2126 or submit the online quick-quote form.
How to Choose the Right 20 Foot Office Container?
Work through these questions before you order to land on the right configuration the first time:
- Headcount: how many people will use the office at once? One to three fits a 20ft unit comfortably.
- Door placement: do you want the entrance on the front (end) or the side for your site layout?
- Restroom: do you need a built-in restroom, or is one already available nearby?
- New or used: is a refurbished unit acceptable, or do you need new condition for client-facing use?
- Buy or rent: is this a long-term asset or a temporary need with an end date?
- Power: does your site have a power source the unit can connect to once in place?
Why Buy a 20 Foot Office Container From Aztec Container?
Aztec Container has built durable storage and shipping containers since 1969 and is a member of the National Portable Storage Association (NPSA). The company offers 10-foot, 20-foot, and 40-foot containers for storage, transport, and custom office builds, with sales available nationwide and rentals in California.
Mobile Office units are built from the same heavy-duty steel frame as Aztec’s storage containers and can be customized to fit your layout and budget.
Frequently Asked Questions
How much does a 20 Foot office container cost to buy?
There isn’t one fixed price. The cost of a 20ft office container depends on whether it’s new or used, how it’s customized, and where it’s going. The fastest way to get a real number is to request a quote for your specific build and location.
What are the dimensions of a 20 Foot office container?
The exterior measures 20 feet long, 8 feet wide, and 8 feet 6 inches tall. Inside, you get about 19 feet 8 inches by 7 feet 8.5 inches — roughly 150 square feet of usable office floor space.
Is a 20 Foot office container insulated?
Yes. A standard 20ft office build is framed, insulated, and drywalled, and it includes air conditioning and heat, so the interior stays comfortable to work in year-round.
How many people can work in a 20 Foot office container?
A 20ft unit comfortably fits one to three people. It’s a popular size for a jobsite office, a supervisor’s office, or a small two-desk setup. If you need room for a larger team, a 40ft office container is the next step up.
Can a 20 Foot Office Container have a restroom?
Yes. A restroom is available as an option on a 20ft office container. Let the team know during your quote so the layout and plumbing are planned into the build.
What’s the difference between buying and renting?
Buying is a one-time purchase and you keep the unit, which suits long-term or permanent use. Renting is a monthly payment for temporary needs. Sales are available nationwide, while rentals are offered in California.
Can I buy a used 20 Foot Office container?
Yes. Office containers are available in both new and refurbished used condition. Used units cost less, while new units offer a cleaner finish that’s often preferred for client-facing offices.
Does a 20 Foot Office Container come with electrical and lighting?
Yes. A standard office build includes electrical wiring, outlets, interior lighting, and an electrical panel, so it’s ready to connect to power and use as a finished workspace.
Where can I buy a 20 Foot Office Container near me?
Aztec Container sells office containers nationwide and is one of the leading suppliers in the United States. You can call 1-800-399-2126 or fill out the online quick-quote form to get started.
Can a 20 Foot Office Container be customized?
Yes. You can customize door placement, the number of windows, interior partitions, finishes, and add-ons like a restroom. The unit can be built to fit your exact layout, use case, and budget.