Versatile, Clean & Ready to Use

20ft Contractor’s Office – Reliable, Spacious, and Site-Ready

Need a dependable mobile office that’s compact yet comfortable? Our 20ft Contractor’s Office offers the ideal blend of space, durability, and quick deployment—perfect for job sites, construction crews, or administrative field needs across Hawaii. With a climate-controlled, finished interior, this container office delivers exactly what your project demands.

Why Choose the 20ft Contractor's Office

  • Spacious Layout

    Twice the space of our 10ft units—ideal for desks, files, meetings, or small teams.

  • Comfortable Workspace

    Includes AC, LED lighting, and epoxy-coated floors for productivity in any weather.

  • Weather-Resistant Build

    New, one-trip container with zinc-coated welds and polyurethane-sealed windows.

  • Quick Deployment

    Often available in stock for rapid delivery to Oahu, Maui, Big Island, and Kauai.

  • Perfect for Field Ops

    Widely used by contractors, inspectors, engineers, site managers, and school administrators.

Detailed Specifications:

20ft Contractor's Office

Container Type

20’ New One-Trip Standard Height Shipping Container

Lighting

Dual LED Lights with Switch by Door

Interior Finish

Painted with Texture (No Drywall)

Flooring

Two-Part Epoxy-Coated Floor

Windows

One 6' x 3' Sliding Vinyl Window

Cooling

12k BTU Air Conditioner with Dedicated Circuit

Doors

One 36” Outswing Steel Door with Lockset

Exterior

Painted in Custom Color

Electrical

Electrical Panel with 4 Outlets

Weatherproofing

Polyurethane Caulking + Zinc-Coated Weld Points

Why Choose Allison Shipping Containers for Your Modifications?

Locally Owned, Island Trusted

We understand Hawaii’s terrain, weather, and job site needs.

Personal Support

You’ll work directly with Allison and her team from start to finish.

Proven Projects

Trusted by FEMA, DOE, Pitzer Built, GoFarm Hawaii, and more.

Built with Integrity

Every weld and cut is done to last, by a team that truly cares.

Rent or Buy

Start with a rental or own your office outright—your choice.

Serving All Hawaiian Islands

We understand the unique needs and logistics of delivering custom solutions to all Hawaiian Islands, with inventory on Oahu, the Big Island, Maui, and Kauai.

Island-Wide Delivery Logistics

Our delivery team handles full logistics across Hawaii—from our Oahu facility to Big Island, Kauai, and Maui. We conduct delivery site assessments to determine if tilt-bed trailers or crane-assisted delivery is needed, ensuring safe and seamless setup wherever you are.

CASE STUDY

Notable Local Container Projects

Shelton's Auto Masters Two Bathrooms and Office Space

At the height of the Covid-19 pandemic, Shelton's Auto Masters, a full service automotive repair shop in Kahului Maui, approached Allison Shipping Containers, Inc. to build a shipping container office unit with two bathrooms to enable them to have clean and comfortable COVID compliant restroom facilities on Maui.


While Shelton's Auto Masters didn't have immediate plans to relocate the restrooms, it made sense for the business to invest in a space that could be transported to a new location in the future should the need arise.

Backyard Office

A young couple suddenly required to work at home during the COVID epidemic asked Allison Shipping Containers, Inc. to build them a backyard office. They needed a place to work efficiently from home and didn't have enough room in their house.


They wanted the office to be 8' x 15' feet so they didn't need to worry about getting a permit from the City and County of Honolulu. (You're allowed to have a 120 square foot storage shed on residential property without getting a permit.)


The couple wanted to keep costs down by doing a lot of the work themselves, so we started with a 40' used shipping container, cut it to 15 feet, end-capped it, and installed a sliding glass door and two windows to provide the space with lots of natural interior light. We welded on the interior studs and they added insulation, hung the drywall and did all of the interior finishing work themselves.


The final project looks great!

Where the 20ft Contractor’s Office Fits In

Construction Command Centers

Great for on-site planning, team briefings, and documentation.

Utility or Infrastructure Projects

Use as a mobile hub for project managers and engineers.

School or Campus Support Rooms

Serve as temporary admin or faculty offices during renovations.

Security or Inspection Booths

A secure and cooled base for overseeing property access or construction compliance.

Temporary Admin Offices

Perfect for remote project areas or off-grid fieldwork.

Specialty Equipment Storage

Securely house sensitive or valuable smaller machinery and equipment.

How Shipping Container Customization Works

Step 1: Get a Quote

Once we have the detailed specs of your build and know what Hawaii island it’s for (whether Oahu, Maui or the Big Island), we’ll get you a quote within a few days.

Step 2: Place Your Order

Once you’re ready to place an order for your custom shipping container, we’ll send you an invoice for a 50% deposit you can securely pay online, or you can mail a check.

Step 3: Approve the Floor Plan

We’ll send you a draft floor plan, color options for paint and flooring options to confirm we perfectly understand your vision.

Step 4: We Build to Your Specs

Once you approve the floor plan, we get to work building your modified shipping container.

Step 5: Receive Your Container

Upon receipt of final payment, we will arrange delivery so you can start enjoying your new space.

Customization Options for Your 20ft Contractor's Office

Adding basic features like man-doors, windows, or vents.

Why Choose Allison Shipping Containers?

At Allison Shipping Containers, we’re committed to your success. As Hawaii’s top container provider, we offer personal service, fair pricing, and full customization. Led by founder Allison, we deliver quality containers—built or modified to fit your exact needs.

17 Years

Of Experience

1589

Happy Customers

We're Committed to 5-Star Service

Read our customers' feedback:

Our experience from start to finish exceeded our expectations. Allison, Tara and her staff were attentive , professional and knowledgable. Great communication and attentive to the most minute detail. They customized our container to our specifications exactly. Thank you Allison and crew for a great experience in making our vision a reality!

This company is amazing. They are professional, efficient and truly care about the needs of the customer. They produce a high quality product and over deliver what is expected. They are also always available on the phone to provide service, their fees are fair for what you receive, and they work well with all the other contractors involved in your project. I highly recommend Allison Shipping Containers.

Ready to Deploy a 20ft Contractor’s Office?

Have Questions?

Call US

888-830-3028

Email Us

NEED MORE INFO?

Frequently Asked

Questions

  • What’s the difference between the Contractor and Deluxe versions?

    The Contractor's Office has painted textured walls and no insulation. The Deluxe model includes full insulation, drywall, ceiling grid, and upgraded flooring.

  • Can I rent this short-term for a job site?

    Yes, we offer both rental and purchase options. The first month includes delivery, pickup, and taxes.

  • How is power connected?

    An exterior electrical hookup connects to your site’s power. We’ll help confirm your requirements.

  • Can this office be placed on uneven ground?

    Yes, with proper site prep or leveling blocks. We’ll assess your site ahead of time to make sure delivery goes smoothly.

  • Can this be modified further?

    Absolutely. We can add outlets, shelving, insulation, or even convert the layout based on your specs.