Custom Shipping Container Builds Engineered to Your Drawings

Offices, enclosures, shops, control buildings, cabins, and multi-container complexes, designed and fabricated under one roof in Texas.

Tell us what the container needs to do and where it is going. Our in-house engineering team draws it, our production floor builds it from 16-gauge Corten steel, and we deliver it to 42+ states, ready to set on level ground with no foundation.

Insulated XCaliber storage container with doors open showing spray-foam walls, electrical outlets and a plywood floor

Engineered and Built In-House, Not Brokered Out

A custom container build is only as good as the shop behind it. XCaliber designs, cuts, welds, insulates, wires, and finishes every unit at our 200,000 sq. ft. Texas facility with 70+ people across engineering, production, and support. Nothing is subcontracted to a third-party fabricator, so the drawings you approve are the unit that arrives.

Start with a 20′ or 40′ ISO container, new one-trip or certified used, and add what the job calls for: personnel doors and windows, roll-up or side-open doors, spray-foam insulation, finished interiors, electrical packages, HVAC, plumbing, and paint or branding. Join multiple containers for a complex, or modify a single box for a specific piece of equipment.

Because it is still a container, the finished build keeps every advantage of the shell it started as: crane-ready corner castings, forklift pockets, and a footprint that fits on a flatbed. It moves when the project moves, and it can be modified again later.

What People Build With Us

Custom builds run from a single window cutout to a multi-container complex. Recent projects include:

  • Ground-level offices and multi-container office complexes
  • Sales, leasing, and guard shack offices with branded exteriors
  • Equipment, generator, and water treatment enclosures
  • Substation control buildings and SCADA shelters
  • Workshops, tool cribs, and parts rooms
  • Break rooms, locker rooms, restrooms, and comfort stations
  • Scale houses and access control buildings
  • Cabins, bunkhouses, and guest units
  • Concession, firework, and pop-up retail stands
  • Utility systems with water tanks and filtration
  • Mobile shooting ranges and other specialty builds
  • Blast-resistant and fire-rated units
  • Shelved, racked, and climate-controlled storage

Start From a Standard Configuration

Most custom builds start from one of our standard lines and change from there. Open a line to see base configurations and delivered pricing for your ZIP code, then tell us what to add.

Insulated, climate-controlled offices in 20′ and 40′ lengths with windows and a personnel door at grade. Add restrooms, conference layouts, storage rooms, or join units into a complex.

Best for: jobsite, sales, and administrative offices that need a specific layout.

New and used containers modified with roll-up or side-open doors, shelving, lighting, insulation, and climate control, or converted into equipment enclosures and shops.

Best for: enclosures, tool cribs, and storage built around what goes inside.

Finished cabins with pine interiors, a full bath, and a kitchenette, or a shell you finish yourself. Add rooftop decks, awnings, shutters, bunk layouts, and solar options.

Best for: cabins, guest units, and rental units with custom finishes.

Building Something That Is Not on the Menu?

Send us a sketch, a spec sheet, or a description of what the unit needs to do. Our engineering team will draw it, confirm the build, and quote it with delivery to your site.

Custom Builds in Action

Watch a custom 40′ cabin come together for a customer who arrived with a very specific vision. The projects below show more of where custom builds end up.

Shipping container utility system with water tank, filtration, and solar panel

Utility and water systems

A container fitted with water tanks and filtration for a remote site that needs its own supply, plumbed and ready to connect.

Custom XCaliber shipping container tool crib with shelving and tools inside

Tool cribs and workshops

Shelving, lighting, and power in a lockable steel box that moves from job to job with the tools inside.

Custom XCaliber shipping container built as a mobile shooting range

Mobile shooting ranges

A specialty build for a customer who needed a range that could move. If it fits in a container, we can probably engineer it.

Wooden cabinets with granite countertop installed

Finished interiors

Framed and paneled walls, cabinets, countertops, flooring, and lighting that turn a steel shell into a room people work or live in.

Blue XCaliber side-open shipping container with both side doors open showing a spray-foam insulated interior

Side-open and roll-up doors

Full side-opening doors and roll-up doors for forklift access, display, and equipment that needs to come and go quickly. See what side-open containers are used for.

Maroon XCaliber container cabin with rooftop deck and awning among trees

Cabins and guest units

Rooftop decks, awnings, shutters, and custom finishes on cabins built for lake lots, ranches, and short-term rental sites.

Customization Options

Every option below is installed at our facility before delivery. This is the standard menu; if what you need is not on it, our engineering team will draw it. New to container modifications? Start with the basics of modifying a shipping container.

Exterior Doors

  • 36″ and 48″ steel entrance doors
  • 6′, 8′, and 10′ roll-up doors
  • French and sliding glass doors
  • Storefront glass doors
  • Residential-style doors
  • More on container door options

Interior Doors

  • Barn doors
  • Interior swing doors
  • Pocket doors

Windows

Climate Control

  • Spray-foam insulation
  • 18,000 BTU wall AC and heat unit
  • 9,000 or 12,000 BTU mini-split system
  • Solar roof vent

Electrical

Wall Finishes

  • Shiplap
  • Real pine
  • Smart siding

Bathroom

  • Corner shower or tiled shower
  • Sink vanity and toilet
  • Hot water heater
  • Washer and dryer connections

Kitchen

  • Gray or hickory cabinets
  • Formica or butcher-block countertops
  • Small or large sink
  • Appliance package

Flooring

  • Vinyl
  • Epoxy
  • Painted

Security

  • Steel window shutters
  • Steel window bars and door bars
  • AC cover and bars
  • Lock box

Shelving

  • 20′ and 40′ half or full shelving
  • Custom shelving

Exterior Packages

Why Build Custom With XCaliber

Engineered In-House

Our own engineering team draws the unit and reviews it with you before fabrication starts.

Built at Volume

3,500+ units a year through a 200,000 sq. ft. Texas facility, so a one-off build does not wait behind the line.

16-Gauge Corten Steel

Every build starts from an ISO container built for ocean service, with lockable doors.

Nationwide Delivery

Delivered to 42+ states by truck and 40′ tilt-bed trailer, and set on level ground with no foundation.

Financing Available

Financing options are available on most builds. See Financing Options.

Customers Come Back

Over 80% of our customers come back for the next unit.

What Custom Build Customers Say

Brent & Sherry Howard, custom storage container

“We want to say a big THANK YOU for everything you did for us throughout the buying process of our new container. Josh, the delivery driver, was excellent! He even took some extra time to lend a hand and pull my stuck truck out of the mud!”

Eric Chavez, custom commercial container

“I just wanted to let everyone know how much I appreciate everybody’s effort on my project! Thank you for jumping through hoops to get that here for me! I am very happy with the finished product! I will definitely recommend you guys!”

David Cox, custom cabin container

“Our experience with XCaliber Container has been fantastic! From the initial design process all the way through construction, delivery, and follow up, we really couldn’t ask for anything more. We are in the planning process for our next unit and will definitely be using XCaliber again!”

How a Custom Build Works

Four steps from idea to delivery.

  1. Tell us what it needs to do. The use, the site, the sizes, and any drawings or photos of what you have in mind. A sketch on a napkin is a fine start.
  2. Engineering review and quote. Our team draws the build, confirms what will and will not work in a container, and returns pricing, options, and a lead time.
  3. Fabrication and finish-out. Cutting, welding, insulation, electrical, HVAC, plumbing, interior finish, and paint, all at our Texas facility, built to the approved drawings.
  4. Delivery and set. The unit ships by truck and sets on level, compacted ground at your site, ready to connect and use.

Delivery & Service Area

XCaliber delivers custom builds nationwide by truck and 40′ tilt-bed trailer. Units set on level, compacted ground, gravel or concrete, and can be craned into tight or developed sites. Plan for electrical service, and for water and sewer or septic if the build includes plumbing. See Delivery & Logistics for site preparation details.

Custom Build FAQ

Can you build to my drawings or spec sheet?

Yes. Send the drawings, a spec sheet, or a description and photos of what you need. Our engineering team reviews it, confirms the build, and quotes it. If you do not have drawings, we draw it for you.

It depends on the container, the modifications, and the delivery distance. Standard offices, storage units, and cabins show delivered pricing for your ZIP code on their product pages, and custom work is quoted from the approved drawings. Financing is available on most builds. For a breakdown of what drives price, see How Much Does a Shipping Container Cost?

Lead time depends on the scope of the build and current production. Ask for the current lead time when you request a quote, and we will schedule the build into production with a date you can plan around.

Yes. Multi-container offices, complexes, and larger floor plans are engineered and built as a set, then delivered and joined on site.

In most jurisdictions a container set on the ground is treated as temporary equipment rather than a permanent structure, so it does not require the permitting a building does. Requirements vary by city and county and by how the unit is used, so confirm with the local authority. We can provide drawings and specifications, and our guide to shipping container permits covers the questions to ask.

Yes. Restrooms, showers, kitchenettes, and utility systems are plumbed at our facility and ready to connect to water and sewer or septic at your site.

Either. Finished builds with interiors usually start with a new one-trip container; storage-type modifications work well on certified used, wind- and watertight containers at a lower cost. We will recommend one based on the build.

Yes. Repeat builds to one approved specification, with forecasted lead times and private-label options, run through Fleet Manufacturing.

Yes. The project gallery shows finished offices, enclosures, cabins, and specialty builds, and our team can share photos of builds similar to yours when you request a quote. Beyond Storage: XCaliber Container’s Diverse Projects walks through several of them.

Get in Touch About a Custom Build

Tell us what the unit needs to do, where it is going, and when you need it. A member of our team will follow up to talk through the build, and our engineering team will draw and quote it from there.

XCaliber Container
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