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What Size Storage Unit Do I Need For Commercial Storage in San Diego?

A-1 Self Storage | June 9, 2025 @ 12:00 AM

Running a business within the thriving city of San Diego often means sacrificing space, stock, and efficiency. The more business that grows, the quicker they will realize they will need more space to store records, equipment, seasonal goods, or raw materials. That's when commercial storage units take over.

Prior to signing a lease for storage in San Diego, however, there is one essential question that must be asked: How large is my storage unit?

Now let's talk about how to determine the correct size for your business and why the right storage facility in San Diego can be the game-changer.

Why Businesses in San Diego Need Commercial Storage

Space Limitations in Offices and Retail Outlets

San Diego commercial and office real estate space is not cheap. Companies typically use small offices where each square foot matters. Instead of filling up office space with clutter, firms use storage space elsewhere.

Seasonal Inventory Management

Retailers, especially, have seasonal fluctuations in demand. Holiday merchandise, summer stock, or special promotions items may take up your backroom or selling floor. A storage unit gives you flexibility without the long-term cost of expanding your commercial lease.

Document and Equipment Storage

Medical offices, law firms, and contractors will accrue piles of documents or equipment that must be kept for years. A safe storage rental in San Diego makes document storage and equipment storage a breeze and in compliance.

Becoming Familiar with Storage Unit Sizes and Their Uses in the Commercial Sector

Small Units (5x5, 5x10) – Well suited for Documents, Tools, and Boxes

If you're a freelancer, businessperson, or professional who has limited storage needs, these sizes are a budget-friendly option. They're great for:

  • Tax returns and filing boxes
  • Spare equipment or marketing materials
  • Personal office machines

A 5x5 would be roughly the size of a small walk-in closet, and a 5x10 would fit the contents of an average-sized office room.

Medium Units (10x10, 10x15) – Best for Excess Inventory or Small Equipment

Mid-size units are standard for most small and medium businesses. You can comfortably fit:

  • Shelved pallets of inventory
  • Offices, office equipment, and filing equipment
  • Trade show and office supplies like printers, POS terminals, and trade show supplies

A 10x10 or 10x15 is spacious without being too much to manage or too small.

Large Units (10x20 and above) – Best for Office Equipment, Bulk Inventory, or Contractor Storage

Larger businesses, construction firms, or multi-unit operations typically require the space that a 10x20 or bigger unit offers. These can hold:

  • Entire office moves or renovation overflow
  • Backup generators, heavy equipment, or warehouse materials
  • Mass quantities of seasonal inventory or event installations

A few storage centers in San Diego even have oversized or warehouse units specifically for commercial customers.

How to Determine Your Commercial Storage Needs

Make an Inventory List Prior to Leasing

Before renting out a storage space, have an exhaustive list of what you'll be storing. This will help you visualize just how much room you need—and avoid overspending on storage space that you won't use.

Think About Accessibility and How Frequently You'll Be Getting Things Out

Do you plan to access merchandise on a weekly basis? Monthly basis? Quarterly basis? Frequent access will necessitate more of a unit with room for walkways and easy item rotation. A San Diego storage center offering 7-day access is ideal for such needs.

Think Long-Term: Expansion, Seasonal Fluctuations, or Growth

Select a unit size that not only accommodates your immediate needs but has room for seasonal boosts or business expansion. It's simpler to expand into a bit bigger of a unit than scramble for additional space in the future.

Selecting the Proper Storage Facility in San Diego

Security Features and 24/7 Access

As an owner, your stored assets—whether they are sensitive information or costly equipment—need to be secure. Seek:

  • Surveillance systems
  • Individual unit alarms
  • Gated access
  • On-site management

Having peace of mind that your assets are protected gives you the ability to invest more time in running your business.

Convenience by Location for Business Operations

Having a conveniently located storage rental in San Diego can save you hours of commuting time if you are opening your unit regularly. If you happen to be downtown, Mission Valley, or even east of there, choose a facility that complements your operations center.

Climate-Controlled Units for Sensitive Materials

If you're storing electronics, artwork, paper records, or temperature- or humidity-sensitive products, consider climate-controlled storage. It's a few dollars well spent that prevents thousands of dollars in damage.

Final Thoughts

Choosing the Right Size Saves You Money and Increases Productivity

The point of commercial storage isn't just to locate "more space"—it's to locate the right space. By understanding your needs and how units are measured, you don't overpay and still have space to expand your business.

Local Businesses Benefit from Smart, Scalable Storage Solutions

Your storage needs grow in line with your business. Choosing the right storage facility in San Diego gives you scalable solutions that grow with you, whether you're a sole proprietor or have several departments.

In terms of business storage, A-1 Storage in San Diego provides simple, affordable options that meet the unique needs of businesses throughout San Diego County. Our diverse range of unit sizes, enhanced security features, and later access hours enable convenient and easy management of inventory, equipment, or documents. Regardless of whether you're expanding, redesigning, or downsizing, we offer clean, secure facilities and a professional staff to help you choose the perfect space. Have A-1 Storage become your business success story ally.

AUTHOR
A-1 Self Storage
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