Built to your plan
40ft Custom & Office Conex Box
A 40ft office conex box gives you room for a multi-desk site office, a workshop with storage, or the shell of a container home. We start from a standard or high cube 40ft container and build in doors, windows, insulation, power, lighting, HVAC and fit-out to your plan.
Condition
How you’d like it
- External (L × W × H)
- 40′ × 8′ × 8′ 6″
- Capacity
- ≈ 2,390 cu ft
- Tare weight
- ≈ 8,200 lb
- Custom configuration
- Get Quote
Every custom build is quoted from the base unit and the work involved.
Pricing, availability, and delivery are confirmed when you request a quote.
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Price
Upfront, competitive prices
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Accessories
Free shipping accessories
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Delivery
Delivery in 5 to 10 days
About the 40ft custom-built conex box
A custom-built container starts with a sound standard or high cube unit and is modified to your plan. Tell us how you’ll use it and we’ll scope the changes, from a single extra door to a fully fitted office.
Common modifications include personnel and roll-up doors, windows, insulation, electrical and lighting, shelving, vents, and paint in your colors. Every build is quoted based on the base unit and the work involved.
Why 40ft?
Twice the floor space of a 20ft unit for well under twice the price, making it the go-to choice for large inventories and conversions.
What fits
About the contents of a three- to four-bedroom home, or roughly 20 to 24 standard pallets.
Who buys a 40ft custom & office conex box?
Popular 40ft builds: project offices with several desks and a meeting area; split units with an office at one end and secure storage at the other; workshops with roll-up doors; classrooms and break rooms; and shells for container homes.
Most 40ft conversions start from a 40ft high cube for the extra headroom. Larger builds usually need permits, so check with your local building department first. Bring a layout and we’ll quote the base unit plus each change. See more on our custom and office conex page.
Key features
- Personnel doors, roll-up doors, and windows
- Insulation and interior wall finishes
- Electrical, lighting, and outlets
- Shelving, workbenches, and racking
- Vents, AC units, and custom paint
Popular uses
- Site offices and break rooms
- Workshops and studios
- Retail and pop-up shops
- Secure equipment rooms
- Container homes and cabins
Choose what suits your budget
Available conditions
Ask for current photos and grade details of any unit before you decide.
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Available
New
- Custom configuration
- Get Quote
Also called one-trip. Typically shipped once from the factory, so expect clean paint, tight door seals, and little or no wear.
About new containers -
Available
Used
- Custom configuration
- Get Quote
Has been in service. Expect dents, surface rust, and faded or mismatched paint; graded cargo-worthy or wind and watertight.
About used containers and grades -
Available
Customized
- Custom configuration
- Get Quote
Starts from a new or used unit and is modified to your plan, such as doors, windows, shelving, insulation, or electrical.
About custom builds
Good to know
Questions about this container
What fits in a 40ft container?
About the contents of a three- to four-bedroom home, or roughly 20 to 24 standard pallets. Exact capacity depends on how the space is packed.
Can a 40ft container be split into two rooms?
Yes. A partition wall with its own door is a common modification, for example an office at one end and lockable storage at the other.
Can a 40ft office container have a restroom?
It can, but plumbing adds cost and usually needs permits plus a water and sewer or holding-tank connection. Ask about it when you scope the build.
Can I rent this container instead of buying it?
Yes. Choose Buy, Rent or Rent to own above and request a quote, and we’ll confirm what’s available for this unit in your area. See how conex rental and rent-to-own work.
Does the quote include delivery?
Delivery depends on your location, site access and the container selected. Share your ZIP or postal code when you request a quote so those details can be checked.
Not quite right?
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8ft custom-built conex box
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10ft custom-built conex box
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20ft custom-built conex box
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45ft custom-built conex box
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