Construction Storage Rentals
Job Site Storage Solutions with MI-BOX® of San Diego
Stock up on bulk materials and keep them close by in a secure MI-BOX storage container. No more wasted hours waiting on shipments, and no more paying for extra delivery runs. With MI-BOX, your team stays productive and your budget stays on track.
Contractors are one of several groups we work with. If you're not on a job site and just want the basics on portable storage containers in San Diego, start there instead.
Get the storage you need, when and where you need it, with MI-BOX of San Diego.
What Size Container for a Job Site
Most job sites take a 20'x8'. It holds four to five rooms' worth of material and gives a crew room to stack lumber, fixtures, and tooling without burying the thing they need on Monday.
A 16'x8' works for tenant improvements, single-room remodels, and phased work where only part of the site is active. It's our most-requested size.
The 8'x8' is the one people forget about. It's equivalent to a 5'x10' storage unit or a 10-foot rental truck, and it's useful as a dedicated tool box on a site that already has material storage elsewhere. Contractors sometimes run an 8'x8' for hand tools and a 20'x8' for materials, so the expensive, portable, easy-to-walk-off items live behind their own lock.
The same portable storage units are used for residential moves, so if you've rented one before, the sizing carries over. Not sure which fits? Call and describe what you're storing. We've been sizing these for San Diego County job sites long enough to get it right over the phone.
Keeping a Container on a Job Site
A container needs a reasonably flat spot roughly 30 feet long for a 20-footer, with clearance above for the delivery truck. Compacted dirt, gravel, asphalt, and concrete all work. Soft or saturated ground is the one real problem, which matters here in January and February more than people expect.
Our delivery system sets the container down flat instead of tilting it, so nothing inside shifts on the way down and the unit sits level even on ground that isn't. On a job site that means you can load shelving and stacked material without it all migrating to one end.
As phases change, the container can move with them. Sites reconfigure, staging areas relocate, and the spot that worked during framing is often in the way by the time finishes go in. We'll reposition it on the same site or move it to a different address entirely.
If you need material off-site instead, we can store your container at one of our secure MI-BOX locations and bring it back when the schedule calls for it.
One thing to sort out early: if the container needs to sit on a public street rather than on the property, that's a right-of-way question for the city or the HOA, not something we can permit on your behalf. Worth checking before delivery day
Job Site Theft and Weather
Theft is the reason most contractors call us. Copper, tooling, appliances, and fixtures sitting in an open structure overnight are a standing invitation, and the loss is rarely just the replacement cost. It's the day you lose waiting on a reorder.
A construction storage container rental puts a steel wall between your material and the street. MI-BOX containers use solid steel construction, pry-resistant hinges, and a heavy-duty locking system built to defeat the bolt cutters and pry bars that make short work of a job box.
Weather does quieter damage. Drywall, cabinetry, flooring, and millwork all move when they sit through a marine layer or a week of rain, and material that warps before it's installed is material you pay for twice. Our containers are weather-sealed, which is the difference between storing something outdoors and storing something outside.
Types of Projects We Support
Tenant improvements and commercial build-outs.
Keeping fixtures, casework, and equipment on site through a phased build-out. See storage for commercial build-outs.
New home construction.
Builders working sites across San Diego County use containers to hold material out of the weather until each trade needs it. See new home construction storage.
Hospitality remodels. Hotels and restaurants run on reopening dates, and stored furniture can't be occupying floor space. See hotel and restaurant remodel storage.
School and university projects. Campus work happens around students and staff. A container gives you a secure spot for furniture and equipment that has to come out of a room but can't go far.
Whole-home renovations. Homeowner contents and construction material both need somewhere to go. See renovation storage.
Storage on Your Schedule
MI-BOX commercial storage works around you. We deliver when you need it and pick it up when you’re done. Need extra space off-site? Store your container at one of our secure MI-BOX locations. Flexible solutions, built for busy job sites.
Contractor FAQs
How secure is it, really?
Solid steel construction, pry-resistant hinges, and a heavy-duty locking system. It's built to slow down the tools that open a standard job box in under a minute. Nothing is unbreachable, but a MI-BOX is a materially harder target than an open structure or a trailer.
How fast can you deliver to a job site?
Our contractors have priority placement when scheduled the day(s) before, and if needed on the day of service, we will attempt to get a unit to the site ASAP
What happens if the job site changes location?
The storage unit can be moved from one location to another whether onsite or another selected location, or it may be placed in storage per the fees associated with the service provided.
How does billing work?
All of the contractors jobs on the initial invoice for the delivery of a unit will have the storage unit fee, the initial delivery and Final Pickup as well as a Damage Waiver, and supplies if so provided. The reoccurring billing will be set up initially per their contract agreement. There is no deposit, the day of the delivery is when the billing occurs but may be adjusted per the storage rental agreement terms and conditions
Is there a minimum rental period?
Our contactors are defaulted into monthly billing per their storage rental agreement.
Do we need a permit?
A permit needed onsite is per the contractor and homeowner and the city/county requirements. In many jurisdictions, a box may not be placed on the street without a permit. If the box is to be placed on the street and gets a notice of removal, it is per the homeowner/contractor for any fees associated with the placement or removal/transfer of the unit.
How secure is it, really?
MI-BOX is a safe and secure steel superstructure mobile storage unit designed for long term use in outdoor conditions. They feature a roll-up door with a slide lock that will allow for up to 2 locks to be placed. A hardened disk lock is the preferred method of locking the unit as they cannot be easily removed with basic tools.
Call (858) 943-0680 and tell us what you're building. We'll size the container, get it to your site, and move it when your schedule changes.
Not a contractor? Our mobile storage containers work the same way for moves, remodels, and business overflow.

