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Quality you can see, experience you can trust.

Shipping Container Offices - The ModiBox®

Office containers for sale - experts in portable office conversions

Containers Direct have long been market leaders in shipping container office conversions, supplying both trade and customers with bespoke conversions from our specialist workshops.

Although shipping container portable offices have always represented good value compared to a traditional build, and have the advantage of being portable too, the costs can still be too high for projects with more limited budgets. To bring down the costs and reduce the selling price, in 2016 we launched the ModiBox® range of steel container portable offices. This concept allows us to retain all the benefits of the standard portable office, in terms of strength, portability and security but at a heavily discounted price.

The range also allows for flexibility in design, in terms of the positioning of anti-vandal doors and windows, choice of exterior colours and interior finishes, giving you the opportunity to create your own bespoke container office within a low price bracket.

Why not start to explore the prices and specification of some standard lengths in the shipping container offices range?

Standard Features of The ModiBox® Container Office

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Personnel door

Full steel construction personnel door with 12 point multi-locking system.

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Anti-vandal windows

Our windows are fitted with steel shutters, heavy duty shoot bolts and anti-vandal lip.

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Fully repainted exterior

Using solvent free rubberised marine grade paint in a choice of colours.

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Lined and insulated

8mm cream or white melamine lining with 100mm rockwool insulation.

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Slip resistant vinyl flooring

Fitted with heavy duty 2mm vinyl flooring, which is stain and slip resistant.

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Electrical installation

CE compliant electrics including plug sockets, strip lights and wall heater installed as standard.

Shipping Container Office - Strength and Security

20ft ModiBox portable office

The strength and security inherent in a shipping container make it ideal for the structure of a portable office. The ModiBox retains all the benefits of the standard portable office in terms of strength, portability, and security but at a heavily discounted price.

The product also allows flexibility in design, in terms of the positioning of anti-vandal doors and windows, choice of exterior colours and interior finishes, giving you the opportunity to create your own bespoke container office within a low price bracket. The unit is delivered to you on a plug-in-and-go basis.

If you're in a hurry, we always hold in stock standard sizes from the ModiBox range with standard layouts, ready for quick dispatch. Depending on the size you require, we begin the conversion with a used 20ft shipping container or a used 40ft shipping container. For other sized offices we cut these down to the size required, with our smallest office manufactured from a 10ft container. If preferred, we can also make the ModiBox from new 20ft and new 40ft shipping containers. We also offer the new build portable office, manufactured from scratch in our fabrication department.

Add a Canteen Package to Your Site Office Container

Everyone's favourite time of day at work is lunchtime! Our optional canteen package includes a work-top counter, double sink unit, and water heater fitted with inlet and waste pipes — perfect as a kitchenette upgrade for your portable office container.

Request a Quick Quote!

Contact our sales team for your no-obligation quote, including delivery!

Container Office - The Perfect Base for Conversions

The ModiBox range also provides a fantastic building block for further modifications and can be converted in many imaginative and useful ways:

Extra Wide Office Containers

We understand that one of the main reasons people can't use a regular shipping container office conversion is due to the uniform width of containers (8ft), which can often be too narrow for an office space. Containers Direct have two solutions to this potential problem:

  1. Using our in-house fabricators, we can build containers from scratch to a variety of widths, most commonly to 10ft wide. Although more expensive, these containers are made using 1.6mm corrugated panels as standard and are completely customisable to suit your needs. We once built the shell of a new build 35ft x 10ft office conversion for our client at Parkstone Bay Marina, complete with ply lining and insulation, who then completed the office interior on site.
  2. Another way of extending the width of your portable site office container is to join two or more of them together. Our bespoke method of joining containers allows for two or more containers to be joined side by side to provide a greater width for your portable office conversion. This option is great as it allows for much larger spaces to be created whilst still being portable. The largest joining project completed so far was created by joining four 20ft containers side by side to create a school changing rooms, fitted with toilets, showers and two separate changing rooms!
Extra wide site offices created from new build or joined containers

Container Office Projects

These projects show how our office containers can be configured for very different requirements, from a bespoke extra-wide workspace to a fitted portable office with its own bathroom. Below are further examples covering site offices, standard ModiBox® builds, canteen packages, office and storage layouts and larger container offices.


9ft Wide Bespoke Office Container

Custom New-Build Office

9ft wide bespoke container office with glazed French doors and apex roof

We built this new office container to a 9ft-wide footprint for a restricted site. The specification included glazed French doors, an apex roof, melamine lining and insulation, an internal partition, vinyl flooring and electrics.

View Case Study

25ft Portable Office with Bathroom

Fitted ModiBox® Office Container

25ft blue ModiBox office container with glazed French doors

We converted a used 25ft container into a fitted ModiBox® office with glazed French doors, an electric roller shutter, anti-vandal windows and a separate bathroom area.

View Case Study


More Site Office and Portable Office Projects

See more office builds across different sizes, layouts and specifications, from compact site offices to larger fitted workspaces with canteen, storage and extra-wide configurations.



View All Case Studies

Container Office - On a Tight Budget?

Take a look at our flat pack container offices if you are working to a tight budget, or don't have the space or access to deliver a shipping container. These offices are fully man-portable, easy to assemble on site and modular, so you can join them together to make whatever size office space you require. Our portable steel booth offers a smaller space for use as a controlled site entry point.

For larger self-assembly offices see our CXO range, which includes the new CXO Plus Line. These provide excellent options for larger areas of modular office space with a range of options for external panels and interior fittings.

View Our Flat Pack Options

Looking for more details on the ModiBox® container office range?

We've compiled a list of the most frequently asked questions to help guide you on all things related to our portable office range. However, if you have any other questions, please call our Sales Team or request a Quick Quote!

What are the advantages of a portable container office?
How can a shipping container office be moved?
Where would a portable container office be used?

Portable Office - Alternative Conversions

The ModiBox is just one of our standardised, low-cost container conversions. We also offer a range of pre-designed packages, available from 10ft in length, for pop-up catering units, schools, gyms and workshops.

Testimonials

As a long established and reputable shipping container company, we want to instil confidence in our customers that we can deliver on our promises, and provide high quality products and service.

But don't just take our word for it, see for yourself what our past and present clients have to say about Containers Direct.
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"Good communication about the delivery of the containers. Both the chaps who delivered them did it so effortlessly, like it was no bother at all! Amazing, will use containers directly again, who gave the best quotes too!" The Techie Whisperer Limited
14th September 2026
order - a Used 10ft Modibox Office and a Used 20ft Container
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"All aspects of the process, including communication and service across all the departments, were excellent. In particular, though, the delivery driver stood out. We deal with a lot of delivery companies on site, and by comparison, the service provided by the driver was excellent - super helpful during delivery and great communication." University of Edinburgh
10th September 2026
order - a 3m Flat Pack Store Container
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"Excellent service. Very happy, thank you." Surrey County Council
3rd September 2026
order - a 'Once-Used' 20ft Container
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"The delivery driver was very helpful and did a great job." Groove Armada Ltd
11th August 2026
order - a Used 15ft Container
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"Superb, friendly delivery team, very helpful with unloading and took great care with product. Very pleased with the total buying and delivery process." Bob Hart - QSS
10th August 2026
order - two Insulated Flat Pack Stores
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"Fantastic service and excellent product." Lostock Hall Juniors Football Club
5th August 2026
order - a 'Once-Used' 10ft Container
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Committed to Quality

We are ISOQAR Approved and certified to ISO 9001:2015 Quality Management Systems, demonstrating our commitment to excellence. We are also members of MakeUK, who champion British manufacturing, and the Container Self Storage and Traders Association (CSTA), representing global operators and innovators. In addition, we are registered members of JOSCAR, the Joint Supply Chain Accreditation Register.

ISOQAR Approved – ISO 9001:2015 Certificate No. 13586-QMS-001
MakeUK Member – Supporting British Manufacturing
Container Self Storage and Traders Association Member
JOSCAR Registered Member
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