From a Shipping Container House to a Mobile Office to a pop-up container shop or restaurant, container modifications are a trendy and useful item right now.

Types of Modifications:

At Simple Box, we focus on doing a few things really, really well. We try to incorporate the motto “Keep It Simple” into all that we do. That philosophy carries over to our container modification department as well. Our highly-experienced mod team has partnered with Insta Container Modifications to produce high quality, reasonably priced container modifications and accessories in a fairly quick completion time.  Although there are a world of possibilities for what you could convert your container into, we focus on doing a few types of modifications very well:


People Doors
Roll-Up Doors

Overhead Lights

The Job Box:

Of course we’re happy to tag-team with you on bringing your container dreams to life, but by far the most popular custom conversion we do is converting a standard 20 foot shipping container into a simple, yet functional site office. Our Job Box includes the following:

  • 1 People Door
  • 1 Window with security bars
  • LED Overhead Lights
  • 2 Duplex Outlets
  • 3 tiers of sturdy Shelves
  • Lockbox for added security

We’ve Completed Modification Work for:

Of course we don’t want our own focus on simplicity to limit your creativity. We have also completed modification work for:

Fire Training facilities
Break rooms / Lunch rooms
Portable restrooms
Incinerators for Military installations
Locker rooms

Hunting cabins
a Tiny House
a Generator Storage “quiet-room”
a Poultry Processing plant
and so much more!

Take a look at these photos showing examples of our container modification work and then get in touch with us to schedule your own custom mod. 


OFFICE HOURS  |  Mon – Fri: 8:00am – 4:30pm  |  Saturday: By appointment  |  Sunday: Closed


Whatcom County
7350 WA-539
Lynden, WA 98264

Call or Text: 360-200-5679

Delivered to your location
within 60 miles of Seattle
Call or Text: 253-509-8955


10941 Chuckanut Drive
Burlington, WA 98233

Call or Text: 360-200-6609


15310 Smokey Point Blvd
Marysville, WA 98271
Call or Text: 425-420-2320

Idaho & Oregon

Hayden, ID
11400 N Warren St, Suite B,
Hayden, ID 83835
Call or Text: 208-810-4868