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Residential Container Modifications

If you can dream it, our container fabrication experts can build it.

From tack rooms to garages, we can convert shipping containers into anything you need. We’ll build your custom container to your specifications, so you can get the extra space you need for your home. The corrugated steel of containers is very different than typical home building. It requires special tools, jigs and expertise to get it done right.

Whatever your need, we’ve got the experience and resources to make it happen.
Here’s why you should choose us to construct a customized container for your home:

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Customized container icon with ruler and pencil. Southwest Mobile Storage.

Provide Your Design & Specifications

Ensure that your design includes all specifications you need and everything else you want. It’s easier to start with as many features you want and narrow down the list as you go through the process, than it is to add to the list later.

Storage container icon with tools. Southwest Mobile Storage.

We Build It with Quality Control

For your peace of mind, our certified weld inspectors and quality control inspectors inspect all work on your modified containers every step of the way, ensuring your build is of the highest possible quality.

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Approval Process

Finalize your specifications and sign off on final quote.

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Make a Deposit

We require 50% of the total cost of your container modification before starting construction on it.

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Get an Initial Quote & Timeframe

We’ll provide an initial quote to see if your current design will be within your budget. If not, we can get into the details to figure out the best way to meet your needs and your budget.

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Pay Your Remaining Balance

The final 50% of your custom container is due before shipment.

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Delivery & Setup

Whether you need us to deliver and set it up for you, or just need our help loading it up on your trucker of choice to set it up yourself, we can accommodate whatever works best for you.


Residential Containers to Modify

The possibilities are endless. We can modify containers into any size and custom build anything you need. You get the choice between cargo-worthy or one trip (new) containers for your custom container project. Cargo-worthy containers are wind-resistant, weathertight and typically spent 10 years carrying cargo. One trip containers have only made one cargo trip in their lifetime and are the newest possible option, as ISO shipping containers are not made in the US.

Standard Storage Containers for Modification

Frequently asked questions

Do I need a design or drawing for my modified container?

You will need to provide a basic design, so we have an idea of what you want. We can draft the rest of your design based on any changes you request; however, we don’t correspond with zoning and/or permitting departments. 

Do you require a deposit for custom containers?

We ask that you pay 50% of the total cost of your container modification before we start construction on it. The final 50% is due before we ship it to you.

I have a large project in the pipeline. Would you be able to handle it?

Our 90,000 sq ft fabrication facility has an extensive staff of certified welders, electricians, plumbers, carpenters, engineers, painters and fabricators that frequently handle multiple container modification projects at a time. With such a large in-house staff and indoor facility, we’re able to provide you with precise, consistently high quality custom shipping containers no matter the size of your project. 

Do you offer a guarantee for modified shipping containers?

Modified containers come with an industry standard one year warranty.

Do you buy back containers that have been modified?

We may buy back a custom container, depending on the type of modifications, the condition of the container, our current inventory and market conditions. 

Do you have engineers on staff that can provide drawings?

We have engineers on staff who can provide basic drawings in the process of building your custom container; however, we don’t provide engineered or CAD drawings. 

What types of containers do you use for your construction?

We use ISO standard containers in varying condition for modifications. Choose from wind and weathertight (WWT) or one-trip containers, based on your needs and budget. 

What size containers do you modify?

We can custom build anything and modify containers to any size that you need. Whether you need an extra wide container or a multistory structure, the possibilities are endless. 

How delivery Works


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See our containers in action

Rows of blue storage containers. Southwest Mobile Storage.