How Large of a Storage Unit Do I Need?

Published on 8/7/2025
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Illustrated large storage unit with stuff inside it

Choosing the right storage unit size can be tricky—especially if it's your first time renting. The last thing you want is to rent a space that’s way too small or overpay for one that’s larger than you need. This guide breaks down typical storage unit sizes, average use cases, and how to estimate the best fit based on what you plan to store.

Not sure how big your storage unit should be? Whether you're storing a few boxes or need to tuck away an RV or business inventory, this guide breaks down the most common unit sizes available nationwide—and how to estimate the right one for your situation.

Common Small to Medium Storage Unit Sizes

These standard sizes are found at most traditional storage facilities. If you're moving, downsizing, or just need to declutter, start here:

  • 5 x 5 (25 sq ft): Small closet-size. Good for boxes, small shelves, or seasonal decorations.
  • 5 x 10 (50 sq ft): Walk-in closet-size. Fits a mattress set, a small couch, or a bike and boxes.
  • 10 x 10 (100 sq ft): Half of a one-car garage. Stores the contents of a 1-bedroom apartment.
  • 10 x 15 (150 sq ft): Enough for two bedrooms’ worth of furniture and boxes.
  • 10 x 20 (200 sq ft): Roughly a standard garage. Good for the contents of a 3-bedroom house or a small vehicle.
  • 10 x 30 (300 sq ft): Great for full-house moves, commercial inventory, or vehicle + trailer combos.

👉 These sizes are ideal for residential needs or small business overflow—but what if you need even more room?

Oversized Storage Units for Vehicles, Equipment & Business Use

Some facilities (like Elite RV and Storage) offer extra-large units that go far beyond the standard. These are perfect for vehicles, fleets, contractors, and businesses that need secure, enclosed space with room to spare.

  • 30 x 20 x 16 (600 sq ft): Holds multiple rooms of furniture, a vehicle, or large-scale storage needs. Ideal for contractors or small business equipment.
  • 42 x 19 x 16 (798 sq ft): Suitable for trailers, jet skis, small boats, or mixed use (business + vehicle).
  • 45 x 20 x 16 (900 sq ft): Perfect for one vehicle plus large item storage or seasonal gear.
  • 50 x 20 x 16 (1,000 sq ft): Popular size for vehicle storage, construction tools, or fleet overflow.
  • 54 x 20 x 16 (1,080 sq ft): Great for large vehicle collections, warehouse-style equipment, or commercial storage needs.
  • 65 x 20 x 16 (1,300 sq ft): Ideal for multiple vehicles, business overflow, or trailer combos.
  • 70 x 20 x 16 (1,400 sq ft): Works well for enclosed vehicles, car haulers, or entire office contents.
  • 75 x 20 x 16 (1,500 sq ft): Great for contractors storing multiple large items, scaffolding, or enclosed work vehicles.
  • 84 x 20 x 16 (1,680 sq ft): Use for mobile businesses, large trailers, or backup fleet vehicles.
  • 98 x 20 x 16 (1,960 sq ft): Nearly 2,000 square feet—this can fit RVs, box trucks, contractor trailers, and more.
  • 100 x 20 x 16 (2,000 sq ft): These drive-thru units offer front and back roll-up doors—ideal for fleet operations, loading zones, or businesses on the move.
  • 116 x 20 x 16 (2,329 sq ft): One of the largest enclosed storage unit sizes available. This is warehouse-level space for large contractors, vehicles, or full business relocation storage.

🔌 Many oversized units come with electrical access, high ceilings, roll-up doors, and 24/7 gated access. These aren’t your average self-storage units—they’re full-on workspaces.

How to Pick the Right Size

Not sure what fits? Use this cheat sheet:

  • Moving a few boxes or seasonal décor? 5x5 to 5x10
  • Storing furniture from an apartment? 10x10 to 10x15
  • Storing a whole house or small vehicle? 10x20 to 10x30
  • Vehicle + inventory + equipment? 30x20 and up
  • Fleet access, trailers, RVs, or contractor setups? 75x20 and larger

If you’re not sure what size to choose, it’s almost always better to go one size up—especially for long-term renters who need flexibility or walkway space inside the unit.

Next Steps

Still unsure? Use your square footage needs as a baseline and reach out to your facility for guidance. You can also explore the facility map or contact the Elite team directly for unit availability, size comparisons, and recommendations.

For more tips on business storage, powered units, or vehicle storage options, check out the Elite blog.