Storage unit sizes
What fits in each common size, drawn to scale, with the median prices we found on facility websites.
Short answer: a 10x10 (100 square feet) is a common pick for a furnished one-bedroom apartment, and a 10x15 suits most two-bedroom homes. A 5x10 can work for a studio or a light one-bedroom. Most units are about 8 feet tall, so you can stack.
Operators do not agree exactly on what fits. CubeSmart sizes a 10x10 for a one-bedroom, while Public Storage calls it two small bedrooms and U-Haul says about three rooms. Treat the ranges below as a starting point, and size up if you have bulky furniture.
All sizes at a glance
| Size (feet) | Square feet | Typically holds | Median price, set gate hours | Median price, confirmed 24/7 |
|---|---|---|---|---|
| 5 x 5 | 25 | A closet: boxes, seasonal clothes, a small chair | $23/mo907 prices | Too few prices |
| 5 x 10 | 50 | A studio, or a light one-bedroom | $37/mo1,022 prices | Too few prices |
| 10 x 10 | 100 | A furnished one-bedroom apartment | $68/mo1,014 prices | Too few prices |
| 10 x 15 | 150 | A two-bedroom home | $96/mo893 prices | Too few prices |
| 10 x 20 | 200 | A two to three bedroom home, or one car | $117/mo905 prices | Too few prices |
| 10 x 30 | 300 | A four to five bedroom home | $183/mo467 prices | Too few prices |
Prices are the lowest online monthly price for each size on the facility's own website, for the facilities in our directory, checked in 2026. We show a median only with 10 or more prices. All of these prices come from Public Storage locations, so they reflect its rates, not the whole market. Facilities with confirmed 24/7 gate access rarely post prices by size, so we cannot compare them yet.
Each size, drawn to scale
Every drawing uses the same scale, seen from above, with an adult for comparison. The grid lines are 5 feet apart.
5 x 5 storage unit (25 sq ft)
The smallest common unit, about the size of a hall closet. Use it for boxes, tubs, seasonal clothes, documents or a few small pieces of furniture.
Public Storage estimates about 10 large boxes plus a twin or full mattress. CubeSmart counts up to about 35 file boxes. Large furniture will not fit.
Median price: $23/mo at facilities with set gate hours (907 prices) . Too few prices from confirmed 24/7 facilities to compare.
5 x 10 storage unit (50 sq ft)
Long and narrow, like a walk-in closet. It suits a studio apartment or a one-bedroom with little furniture.
U-Haul places studio and one-bedroom moves here, including a queen mattress, a dresser and a couch. CubeSmart notes that mattresses go in standing on end.
Median price: $37/mo at facilities with set gate hours (1,022 prices) . Too few prices from confirmed 24/7 facilities to compare.
10 x 10 storage unit (100 sq ft)
The size people rent most often, according to Move.org. It fits a furnished one-bedroom apartment, including large appliances.
Public Storage suggests a 10x10 for a one-bedroom with bulky furniture, and says a 5x10 may be too small for a typical one. StorageCafe adds that a 10x10 lets you lay a mattress flat.
Median price: $68/mo at facilities with set gate hours (1,014 prices) . Too few prices from confirmed 24/7 facilities to compare.
10 x 15 storage unit (150 sq ft)
A step up for a two-bedroom home, or a one-bedroom plus a motorcycle or lawn mower.
Public Storage estimates about 60 large boxes with bulky furniture and appliances. StorageMart sizes it for a small two to three bedroom home.
Median price: $96/mo at facilities with set gate hours (893 prices) . Too few prices from confirmed 24/7 facilities to compare.
10 x 20 storage unit (200 sq ft)
About the size of a one-car garage. It holds a two to three bedroom home, or a standard car if the facility allows vehicles in units.
Public Storage puts a three-bedroom home here, and StorageMart lists two bedroom sets plus a dining set and outdoor gear. For a car, Public Storage points renters to vehicle spaces and reminds them to check the door width.
Median price: $117/mo at facilities with set gate hours (905 prices) . Too few prices from confirmed 24/7 facilities to compare.
10 x 30 storage unit (300 sq ft)
The largest common unit. It holds a four to five bedroom house, or a large vehicle.
CubeSmart sizes it for a four to five bedroom house, and U-Haul for an entire household. Public Storage's guide stops at 10x25.
Median price: $183/mo at facilities with set gate hours (467 prices) . Too few prices from confirmed 24/7 facilities to compare.
How to pick a size
- List what you are storing, starting with the largest pieces. CubeSmart recommends this as the first step.
- Plan to stack. With most ceilings near 8 feet, according to Public Storage, height matters as much as floor area.
- Leave a walkway if you will need things often.
- Between two sizes, choose the bigger one if you have sofas, mattresses or appliances.
- For night visits, check that the facility has confirmed 24/7 gate access, not just a 24-hour listing. See gate access vs office hours.
Questions
What size storage unit do I need for a one-bedroom apartment?
A 10x10 is a common pick for a fully furnished one-bedroom. CubeSmart lists a 10x10 for a one-bedroom apartment, and Public Storage suggests a 5x15 or 10x10 for most one-bedrooms. If you have little furniture, a 5x10 can be enough.
What size storage unit do I need for a two-bedroom home?
Usually a 10x15. Public Storage and CubeSmart both size a 10x15 for about two bedrooms. With bulky furniture or appliances, look at a 10x20.
How tall are storage units?
Most are about 8 feet tall, according to Public Storage, CubeSmart and StorageMart. Lockers and some indoor units are shorter, so ask if you plan to stack high.
Can I keep a car in a storage unit?
A standard car usually fits in a 10x20, according to CubeSmart and StorageMart. Trucks and SUVs may need a 10x25 or 10x30. Not every unit allows vehicles, so check before you rent.
Can I switch to a different size later?
Usually yes. StorageMart, for example, says you can move to a bigger or smaller unit if one is available. Ask the facility how a transfer affects your rate.
Do units with 24/7 gate access cost more?
We cannot say yet. We have 5,208 size prices from facility websites, but fewer than 10 per size come from facilities with confirmed 24/7 gate access. Ask each facility whether 24-hour access is included in the rent.