For contractors, investors & storage business owners

Steel Self-Storage & Mini Storage Buildings

Pre-engineered steel buildings for drive-up self-storage, boat and RV storage, and climate-controlled facilities. Our designers lay out the units, and your package can include roll-up doors, interior partitions and insulation.

MBMI supplies the steel building package and stamped drawings. The foundation and erection are done by you or your contractor.

Get a Storage Building Quote

Tell us the building size and how to reach you. We’ll follow up with pricing.

Prefer to talk? Call 1-800-293-2097

Illustration of a steel self-storage facility with drive-up units and boat and RV storage
Illustration
Since 2002Supplying steel buildings
3,000+Customers
IAS-certifiedPlants, built to MBMA standards
40-yearPaint warranty on panels

Who we work with

For Contractors and Storage Investors

Mini storage is built to run as a business. Whether you’re bidding the job or funding it, you need drawings, a complete materials package and a firm price early.

Contractors and builders

  • Stamped drawings for the permit set
  • One package: framing, panels, roll-up doors, partitions and insulation
  • Parts labeled to match the drawings
  • Multi-building and phased jobs

Investors and storage owners

  • Unit layouts drawn from your target unit mix
  • A building package price for your budget and your lender
  • Start with one or two buildings and add more later
  • Added buildings for a facility you already own

Planning a storage facility? Get a price on the building package for your site.

Why MBMI

Steel Storage Buildings, Engineered and Supplied by One Company

PE

In-House Engineering

Our engineers prepare stamped drawings and design each building for the wind and snow loads where you’re building.

DOOR

Doors, Partitions & Insulation

Your package can include roll-up doors, interior unit partitions and hallway walls, and roof and wall insulation.

BOLT

Built for Bolt-Together Assembly

Steel parts are fabricated to your drawings and labeled, then bolted together on site instead of framed from scratch.

USA

Made in the USA

Manufactured at IAS-certified plants to MBMA standards. Painted roof and wall panels carry a 40-year paint warranty.

More about building with MBMI

What they look like

Typical Steel Storage Buildings

Steel drive-up mini storage building with a row of red roll-up doors
Drive-up mini storage
Interior hallway of a climate-controlled steel storage building with white roll-up doors
Climate-controlled interior hallway
Steel boat and RV storage building with tall white roll-up doors
Boat and RV storage

Representative images.

Building types

Drive-Up, Boat & RV, and Climate-Controlled Buildings

Illustration of a drive-up mini storage building with roll-up doors

Drive-Up Mini Storage

Single-story buildings with roll-up doors that open to the outside. Common unit sizes are 5×10, 10×10, 10×15 and 10×20, and one building can mix several sizes.

Illustration of a boat and RV storage building with tall roll-up doors

Boat & RV Storage

Enclosed bays with tall roll-up doors for motorhomes, travel trailers and boats. Larger motorhomes generally need a door about 14 feet tall and a bay 40 to 50 feet deep.

Illustration of a climate-controlled storage building with an interior hallway entrance

Climate-Controlled Storage

Insulated buildings with interior hallways, so tenants reach their units from inside. These units usually rent for more per square foot than drive-up units, but they need HVAC, which your contractor supplies.

Plan your buildings

Sample Building Layouts

How common unit sizes fit common building sizes. Your actual unit count depends on wall thickness, door placement and your design.

Building sizeSample layoutExample unit count
20′ x 100′Two rows of units, back to back20 units, 10′ x 10′
30′ x 100′Two rows of units, back to back20 units, 10′ x 15′
40′ x 200′Two rows of units, back to back40 units, 10′ x 20′
50′ x 150′One row, doors on the long side10 boat or RV bays, 15′ x 50′

Need a different mix? Send us your total square footage or the unit sizes you want, and our designers will lay out the building.

Sample Floor Plans

Drive-up mini storage, 30′ x 120′

24 units: twelve 10×10 and twelve 10×20, back to back, with roll-up doors on both long walls. 3,600 sq ft of rentable space.

Swipe to see the full plan →

Sample floor plan: 30 by 120 foot drive-up mini storage building with 12 ten-by-ten units and 12 ten-by-twenty units10×1010×2010×1010×2010×1010×2010×1010×2010×1010×2010×1010×2010×1010×2010×1010×2010×1010×2010×1010×2010×1010×2010×1010×20120′10′20′30′Roll-up doorExterior wallUnit partition

Boat and RV storage, 50′ x 150′

10 enclosed bays, each 15′ x 50′, with 12′-wide roll-up doors on one long wall. Room for motorhomes, travel trailers and boats on trailers.

Swipe to see the full plan →

Sample floor plan: 50 by 150 foot boat and RV storage building with 10 enclosed bays, each 15 by 50 feet, with roll-up doors on one long sideMotorhomeTrailerBoat15×5015×5015×5015×5015×5015×5015×5015×5015×5015×50150′50′Roll-up doorExterior wallUnit partition

Sample plans for illustration only, not for construction. Our designers draw the final layout for your site, unit mix and door sizes.

Want a layout like these for your site? Our designers draw it with your quote.

Scope

What MBMI Supplies and What the Builder Handles

MBMI supplies

  • Pre-engineered steel framing
  • Roof and wall panels with trim, in your choice of colors
  • Roll-up doors, including tall doors for boat and RV bays
  • Interior unit partitions and hallway walls
  • Roof and wall insulation
  • Engineer-stamped drawings for your permit

The builder handles

  • Site work, grading and paving
  • Concrete foundation
  • Erecting the buildings
  • Electrical, lighting and HVAC
  • Gates, fencing and security systems
  • Submitting plans to your building department

How it works

How to Order Your Storage Buildings

1

Send your project details

Your location, the building sizes or total square footage, and the unit mix you want. A sketch or site plan helps.

2

We lay out and engineer

Our designers arrange the units inside each building. Our engineers prepare stamped drawings for your permit.

3

Approve and order

You review the drawings and price. Your steel components are then fabricated to the approved drawings.

4

Delivery and erection

Parts arrive labeled to match your drawings, and your contractor bolts the buildings together on your foundation.

Ready to price your buildings? It takes about a minute.

Questions

Self-Storage Building FAQs

How much does it cost to build a self-storage facility?

Your total project cost includes more than the steel buildings. Land, site work, foundations, erection and building systems all affect the budget. MBMI quotes the steel building package, including any doors, partitions and insulation you choose. Send us your location, building sizes and unit mix to get a package quote.

What does MBMI supply, and what does my contractor handle?

MBMI supplies the steel framing, roof and wall panels, trim, roll-up doors, interior partitions, insulation and stamped drawings. You and your contractor handle site work, the foundation, erection, electrical, HVAC and security systems.

Does MBMI erect the buildings?

No. MBMI supplies the building package and drawings. Your contractor or an erection crew assembles the buildings on your foundation.

What do you need from me for a quote?

Your site location, the building sizes or total square footage you’re considering, the type of storage (drive-up, boat and RV, or climate-controlled), and your unit mix if you have one. Include a sketch or site plan if you have it.

Can I build my storage facility in phases?

Yes, where your site and approvals allow. Many owners start with one or two buildings and add more later. Laying out the full site at the start makes later buildings easier to match.

What size doors do RV and boat storage units need?

Larger motorhomes generally need a door around 14 feet tall and 12 to 14 feet wide, with a bay 40 to 50 feet deep. Boats and travel trailers can often use smaller bays. We size the doors and bays to the vehicles you plan to store.

Will my buildings meet local codes?

Our engineers design each building for the wind and snow loads where you’re building and stamp the drawings you submit for your permit. Your building department makes the final approval.

Do you rent storage units?

No. MBMI supplies the buildings that storage facilities are built from. If you’re looking to rent a unit, please contact a storage facility near you.

Want to Give Us the Full Details?

Multiple buildings, unit sizes, doors and site plans. Only the building size and your contact details are required.

1. The Project
More than one building?
2. Building Size (feet)

More than one building? Enter the largest one here and list the other sizes in the comments.

3. Units & Doors
Do you have a site plan or unit layout?
Unit sizes needed (check all that apply)
Include in my quote
4. The Site
Do you own the land?
5. Contact Information

Your privacy is important to us. We will NOT spam your email address!
Why do we need your phone number? We prefer talking to our customers and we might have to contact you in order to give you the best price.

Prefer to talk it through? Call 1-800-293-2097

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