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Picking the wrong storage unit size costs you money. Too small and you’ll pay to upgrade mid-move. Too big and you’re throwing cash away every month on space you don’t need.
After 55 years in the storage business, I’ve seen people make the same sizing mistakes over and over. Here’s how to get it right the first time.
Storage Unit Sizes and What Fits
| Unit Size | Dimensions | What It Holds | Best For |
|---|---|---|---|
| 5′ x 5′ | 25 sq ft | Walk-in closet contents, boxes, small furniture | College dorms, seasonal items |
| 5′ x 10′ | 50 sq ft | 1-bedroom apartment, mattress set, dresser | Small apartments, office moves |
| 10′ x 10′ | 100 sq ft | 2-bedroom home contents, appliances, furniture | Most popular size, home renovations |
| 10′ x 15′ | 150 sq ft | 3-bedroom home, large furniture, multiple appliances | Family moves, business inventory |
| 10′ x 20′ | 200 sq ft | 4-bedroom home, car, boat, large equipment | Vehicle storage, major relocations |
| 10′ x 30′ | 300 sq ft | Full house contents, multiple vehicles | Long-term storage, business use |
How to Calculate What Size You Need
Don’t guess. Walk through your space and count furniture pieces, not rooms. A “3-bedroom home” means nothing if one bedroom has just a bed and the other is crammed with furniture.
Start with Major Items
- Mattress sets — need 4′ x 6′ of floor space each
- Couches and sofas — take up 8′ x 4′ when stored properly
- Dining room tables — can stack chairs on top to save space
- Appliances — refrigerators and washers need their own corner
Then Add Everything Else
Boxes stack to the ceiling, so they don’t take much floor space. But dressers, bookcases, and other tall items eat up your vertical storage quickly.
My rule: add 20% to whatever you calculate. You always have more stuff than you think, and you need walkways to reach items in the back.
Common Sizing Mistakes People Make
Going Too Small to Save Money
I’ve watched customers try to cram a 2-bedroom apartment into a 5×10 unit. It doesn’t work. You end up with damaged furniture and no way to access anything without moving everything else first.
Forgetting About Access
If you pack a unit wall-to-wall with no pathways, you can’t get to anything in back without unloading the entire unit. Leave yourself a 3-foot aisle down the middle.
Not Planning for Growth
Storage needs change. Kids accumulate toys. Businesses grow inventory. If you’re storing long-term, consider our range of storage unit options that let you upgrade easily without moving everything twice.
Special Considerations for Texas Storage
Texas heat changes how you should think about storage size and what you store.
Climate Control Requirements
Electronics, photographs, wooden furniture, and important documents need climate-controlled units in our Texas heat. These units cost more, so size them carefully — you don’t want to pay climate control rates for space you’re not using.
Vehicle Storage in Texas
Boats, RVs, and classic cars are popular here, but they need more space than you think. A standard car needs a 10×20 unit minimum. Boats and RVs often require 10×30 or larger.
When to Size Up vs. Size Down
Size up if you’re storing long-term or have valuable items that need careful organization. The extra space pays for itself in convenience and protection.
Size down if you’re storing short-term during a move and everything is in boxes. But honestly, if the difference is only $20-30 per month, go bigger. The stress relief is worth it.
Here’s when we’re not the right choice for you: if you need a unit smaller than 5×5 or larger than 10×30, look elsewhere. We focus on the sizes most Texas families and businesses actually use, not the extremes.
Business Storage Sizing
Business storage needs are different from home storage. You’re dealing with inventory that changes, equipment that gets accessed regularly, and records that need organization.
Texas businesses have specific storage needs that require flexible solutions and easy access.
Retail Inventory
Plan for seasonal fluctuations. Christmas inventory takes up 3x the space of regular stock for most retailers. Start with a larger unit or plan to upgrade seasonally.
Office Records and Equipment
File boxes stack efficiently, but office furniture and equipment need floor space. A 10×10 handles most small office relocations.
Frequently Asked Questions
Can I change unit sizes after I move in?
Yes, we offer month-to-month terms so you can resize as needed. But moving everything twice costs time and money, so it’s better to get it right initially.
Do I really need climate control in Texas?
For anything sensitive to heat and humidity, absolutely. That includes photos, documents, electronics, wooden furniture, and leather items. Regular units hit 120+ degrees in Texas summers.
How high can I stack boxes?
Most of our units have 8-foot ceilings, but don’t stack boxes more than 6 feet high. You need to access them safely, and boxes at the bottom compress under too much weight.
What if I need help moving in?
We’re a U-Haul Top Dealer, so you can rent trucks and moving supplies right here. Our truck rental options make moving day simpler when everything’s in one place.
Can I store vehicles in regular storage units?
Cars, motorcycles, and boats can go in regular units, but make sure the unit is large enough. A car needs a 10×20 minimum, and you still want space to walk around it.
Need help sizing your storage unit? Call us at (214) 341-8823. After 55 years in Texas storage, we’ve seen every storage situation and can help you get the right size the first time.
