
Customized Solutions — Built to Your Exact Requirements
Not every job fits a standard unit. When your project demands something built to spec — a mobile lab, a field command station, a power unit, or a specialty workspace — Mobile-Stor designs and builds custom units from the ground up.
We've built custom units for healthcare providers, mining and oilfield operations, research organizations, and contractors who needed a solution that didn't exist off the shelf. Tell us what you need — we'll build it.
What We Build
Every custom unit starts with a conversation about what you actually need. We've handled a wide range of configurations — here's what our shop has built.
Custom Builds — Inside and Out
Every custom unit is designed, framed, insulated, wired, and finished in our Billings shop before delivery. The result is a purpose-built unit ready to work from day one.
20-Foot On-Ground Office





8' × 12' Gravel Pit Control Office





8' × 20' Mine Laboratory




8' × 40' Highway Laboratory





8' × 40' Office With Bathroom





8' × 40' OSB Interior



8' × 40' Door and Window Installation


8' × 20' Radio Tower Build


8' × 40' Shelf Bracket Build




How the Custom Build Process Works
We keep it simple. No layers of project managers or national call centers — just a direct conversation with the people building your unit.
Tell Us What You Need
Call or submit a quote request. We'll ask about the application, interior requirements, utility needs, size, and delivery location. No RFP required — just a conversation.
We Design & Quote
Our team puts together a build scope and quote based on your requirements. We'll walk you through the plan and make adjustments before any work begins.
Built in Billings, Delivered to You
Every custom unit is built in our Billings shop. When it's done, we deliver it directly to your site, ready to connect and operate.
Customized Unit Questions
What makes a unit 'custom'?
Custom units are containers or office units that have been purpose-built or significantly modified to serve a specific function — specialty interiors, unique floor plans, built-in workstations, custom exterior finishes, or purpose-specific layouts. If a standard office or storage unit doesn't fit your use case, a custom build might.
What types of configurations are available?
We've built and modified units for mobile command centers, field offices with specialized equipment, ADA-accessible units, and purpose-built work environments. Tell us what you need the space to do and we'll work from there.
How long does a custom build or modification take?
It depends on the scope of the project. Simple modifications can often be done quickly; full custom builds take longer. When you request a quote, we'll give you a realistic timeline based on what you're asking for.
Can I rent a custom unit, or is it purchase only?
Both options are available depending on the unit and configuration. Some custom units are available for rental; others may be built to purchase. We'll walk you through what makes sense for your situation when you call.
What's the first step to getting a customized unit?
Call us at (406) 259-9175 or fill out the quote form below. Describe what you need the unit to do — dimensions, function, any specific features — and we'll get back to you with options and a quote.
Request a Custom Quote
Describe what you need and we'll get back to you with options. There's no obligation — just a straightforward quote from people who build this stuff every day.
