Storage Unit Size Guide at a Glance
Not in the mood for a quiz? Here’s how the most common storage unit sizes compare. Prices are typical 2026 national monthly ranges for standard units.
| Unit size | Square feet | Holds about | Typical price |
|---|---|---|---|
| 5 × 5 | 25 | A closet: boxes, seasonal items, a small dresser | $45–$60 |
| 5 × 10 | 50 | A studio or dorm room | $65–$85 |
| 5 × 15 | 75 | 1 to 2 rooms, including a mattress set | $85–$110 |
| 10 × 10 | 100 | A one-bedroom apartment | $115–$135 |
| 10 × 15 | 150 | A two-bedroom apartment | $150–$180 |
| 10 × 20 | 200 | A three-bedroom home, or a car | $200–$230 |
| 10 × 30 | 300 | A four- or five-bedroom home | $250–$290 |
Want to compare real prices in your area? Compare self storage prices near you, or build a detailed estimate with our self storage cost calculator.
Tips for Choosing the Right Storage Unit Size
Most people either overestimate and pay for empty space, or underestimate and end up with belongings they can’t fit. A few habits help you land on the right size: make a quick inventory of your large items, use uniform boxes that stack to the ceiling, disassemble bed frames and tables, and stand mattresses and sofas on end. If you’ll need to reach things often, leave a center aisle and put frequently used boxes near the door. For more help, see our guide to choosing a storage unit size with an inventory template.
Storage Unit Size FAQs
What size storage unit do I need for a 2-bedroom apartment?
A 10×15 usually holds the contents of a two-bedroom apartment. If you have lots of large furniture, appliances or want an aisle to reach your things, step up to a 10×20.
What size storage unit do I need for a 1-bedroom apartment?
A 10×10 typically fits a one-bedroom apartment, including a bed, sofa, dresser, table and boxes. A sparsely furnished studio can often fit in a 5×10.
What size storage unit fits a 3-bedroom house?
Most three-bedroom homes need a 10×20. Larger homes with a lot of furniture may need a 10×30.
Is it better to get a bigger storage unit?
Only if you need an aisle or expect to add more items. A unit that’s one size too large can cost $30 to $60 more every month, so pack efficiently and choose the smallest size that fits comfortably.
Can I fit a car in a storage unit?
A 10×20 drive-up unit fits most cars and SUVs. For boats, trailers and RVs, you’ll usually need an outdoor or covered parking space. See our car, boat and RV storage finder.