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Containers Direct logoQuality you can see, experience you can trust.
Containers Direct logo
Quality you can see, experience you can trust.

New Portable Site Offices

A2Z of New Portable Site Offices

New Portable Site Offices 20ft Prefab office - OFF132012 *Current Offer (On display in Clearance » Available Now!)
Looking for a secure, robust and long-lasting portable office? Containers Direct are long-established pioneers in shipping container conversions, and one of our most popular designs is the ModiBox®. The ModiBox® is a standardised new portable site office that combines the renowned strength and security of steel shipping containers with a range of modifications to give you a comfortable and practical workspace, at a price significantly cheaper than that of traditional buildings. Its portability gives you flexibility and keeps your options open for relocation, and our range of sizes, from 10ft long up to 40ft long, makes them suitable for all locations from back gardens to industrial estates.

New build portable site offices

For a brand new portable site office, choose our new build ModiBox®. With the current shortage of shipping containers internationally, building shipping containers in our own workshops has helped get around this problem. With our in-house fabrication depot we are industry leading experts in new build containers. We are members of Make UK, a body who champion and celebrate British manufacturing and manufacturers. Our new portable site offices are built "from scratch" exclusively at Containers Direct, instead of upcycled from shipping containers. For our new builds we use tough 16 gauge corrugated steel to make each panel, and they are fully seam welding together for strong, watertight and dependable results. The floor is a steel chassis overlaid with ply. Our ModiBox® new builds are built to the standard shipping container sizes of 8ft wide and 8ft6in high, in a range of lengths, but they can be built wider, or taller, if required. 10ft widths are popular with new builds, giving a more spacious feel inside.

Sample new build portable offices:

Once-used portable site offices

Alongside our new build work we are still busy converting once-used and used shipping containers, which includes the ModiBox®. Choose a once-used ModiBox® for maximum lifespan and optimal appearance. Your once-used ModiBox® will be converted from a shipping container that is "nearly new", as it will have only made one transportation trip from overseas to arrive in the UK. Compared to used shipping containers, which can be between 10 to 15 years old, the condition of a once-used condition is far superior. Signs of wear and tear are minimal and you can expect to get many years more problem-free use from it.

We use 20ft new shipping containers and 40ft new shipping containers, which we cut down to your required office length. Of course, if you need a 20ft or 40ft office then no cutting is required! All our cut down containers are made whole with 16mm gauge corrugated steel, fully seam welded to ensure watertightness, and

Standard Features of the ModiBox®

Personnel Doors

  • Welded steel construction

  • 12 point multi locking system

  • Anti-jemmy hinge bolts

Anti-vandal windows

  • All steel construction

  • Anti-jemmy lip around the frame

  • Heavy duty steel shoot bolts

Exterior Repaint

  • Rubberised marine grade paint

  • Range of colours

  • Solvent free

Melamine Lining

  • Choice of cream or white finish

  • 8mm board over 50mm frame

  • 100mm rockwool insulation

Vinyl flooring

  • Heavy duty 2mm wear layer

  • Stain resistant

  • Slip resistant


  • CE compliant parts (plug sockets, LED strip light)

  • 4 way steel consumer unit

  • 2KW convector heater

Popular upgrades

Want to make your portable office a cut above the rest? We have a range of luxury optional extras to choose from that can transform your container, and can even help navigate around potential planning permissions. For instance, wood cladding helps it to blend into green surroundings, and disguises the appearance of a metal box.

Request a Quick Quote!

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

Flat pack offices

For new offices on a tighter budget, or if your location has restricted access, then take a look at our range of self-assembly offices. Starting at just 2m and going up to 30ft, the smaller sizes are completely man portable, therefore great for gardens. Larger sizes require a crane delivery, but can be joined together, or stacked to create a number of configurations in terms of layout and size.


"From initial enquiry, to payment and on to the delivery, the service we received was first class."

From Mark Dunn - Langley Waterproofing

"The unit you have provided for me is fantastic and of a high quality and perfectly on budget. The service from start to finish has been completed in a professional manner right through the whole team. My overall experience with your company is the best I could have wanted."

From Andrew Horrocks

Read all testimonials here!
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