10x30 Storage Units: What Fits and What They Cost
A 10x30 storage unit is 300 square feet and rents for a national median of $239.95/mo across the 349 priced 10x30 units we track. It fits a four-plus-bedroom house or large vehicle.
What fits in a 10x30?
A 10x30 is 10 feet wide and 30 feet deep, or 300 square feet of floor. In practice that holds:
- A four-bedroom or larger house, appliances and garage included
- Business inventory on pallets. A 48-by-40-inch pallet is about 13 square feet, so 300 square feet is floor space for roughly 22 of them
- A vehicle and a household load, front to back
- Contractor equipment and materials with a working aisle left down the middle
In boxes: a medium moving box is 18 by 18 inches at the base, or 2.25 square feet, so 300 square feet is room for about 133 of them in a single layer on the floor. Boxes stack, so 4 layers, roughly chest height, is on the order of 532 boxes. Both figures assume you use every square foot and never need to reach the bottom of a stack, so treat them as the ceiling on what a 10x30 holds rather than a packing plan.
What does not fit in a 10x30?
The limits are easier to check than the capacity, because each one comes down to a single measurement:
- Anything wider than 10 feet. All of the extra space over a 10x20 is depth. A 10x30 is no wider than a 10x10.
- Anything you will need soon, if it goes in first. Thirty feet of depth puts the far wall a long way from the door, so the front third is the only part of a 10x30 you can reach without unloading.
- Two loads you need to keep apart. One deep unit has one door; two 10x15 units add up to the same 300 square feet and give you two.
What the size name does not tell you
Ceiling height. A 10x30 is 300 square feet of floor and the name says nothing about how high you can go. At an 8-foot ceiling that same footprint encloses roughly 2,400 cubic feet, and more than half of that volume sits above waist height. Ceiling heights vary between buildings and are not part of the advertised size, so ask the facility rather than assuming.
The door opening. The door is not the same as the 10-foot wall behind it. Roll-up and swing doors are sized independently of the unit, so measure your widest single item, such as a sofa, a mattress, or a refrigerator, and confirm the door dimensions with the facility, not just the unit dimensions.
How you reach it. Two 10x30 units at the same price can be very different to move into. A drive-up unit you back a truck up to; an interior unit means a hallway, possibly an elevator, and then 30 feet of carrying at the far end. On moving day that difference is measured in hours.
The mistake people make with a 10x30
At 30 feet deep, the back of the unit is effectively a different room.
A 10x30 is the largest of the standard sizes, and every square foot it adds over a 10x20 is depth. The unit is still 10 feet wide. That geometry should decide how you load it. Anything you might want inside the next year belongs in the front third, and a center aisle costs far less than the afternoon you spend unloading 20 feet of furniture to reach one box. If the load is really two loads, say a household and a business, two 10x15s add up to the same 300 square feet and are often easier to live with.
When a 10x30 is the right size
- A four-plus bedroom house, garage included
- A business holding inventory or equipment off-site
- A contractor or trades operation working out of storage
- A long build or renovation with a whole household waiting
- A vehicle stored alongside a full household load
What a 10x30 costs
The national median is $239.95/mo, across the 349 priced 10x30 units we track. That is a midpoint across every city on this site, not a quote: it is the online rate operators publish on their own sites, half the units we track are above it, and none of it accounts for local rates or promotions. Use your own city's page for the number you will actually pay.
10x20 vs 10x30
A 10x30 is the largest of the 6 standard sizes, so the only comparison is downward. A 10x20 is 100 square feet smaller, and because both are 10 feet wide the entire difference is depth.
| Size | Sq ft | vs 10x30 | What fits | Priced units tracked | National median |
|---|---|---|---|---|---|
| 10x20 | 200 sq ft | −100 sq ft (−33%) | A three-bedroom house, or a car. | 2064 | $159/mo |
| 10x30 | 300 sq ft | Same | A four-plus-bedroom house or large vehicle. | 349 | $239.95/mo |
Cheapest 10x30 storage unit by city
| City | Cheapest 10x30 | Facility |
|---|---|---|
| Houston, TX | $48/mo | Extra Space Storage at 5550 Antoine Dr |
| Atlanta, GA | $55/mo | Extra Space Storage at 6231 Hillandale Dr |
| San Antonio, TX | $56/mo | Extra Space Storage at 15110 Culebra Rd |
| Austin, TX | $69/mo | Extra Space Storage at 14051 W US-290 |
| Charlotte, NC | $80/mo | U-Haul at 14231 Hunters Rd |
| Philadelphia, PA | $86/mo | Extra Space Storage at 329 W Butler Ave |
| Las Vegas, NV | $88.80/mo | CubeSmart at 4230 S Pecos Rd |
| Nashville, TN | $90/mo | U-Haul at 124 Industrial Dr |
| Oklahoma City, OK | $96/mo | Extra Space Storage at 9111 N MacArthur Blvd |
| Dallas, TX | $109/mo | Extra Space Storage at 19383 Preston Rd |
| Chicago, IL | $121/mo | Extra Space Storage at 7700 W 79th St |
| Louisville, KY | $122/mo | Extra Space Storage at 4401 Bardstown Rd |
| El Paso, TX | $167/mo | Extra Space Storage at 5823 Lexington Dr |
| Denver, CO | $186.75/mo | CubeSmart at 6790 Federal Blvd |
| San Jose, CA | $204.95/mo | U-Haul at 6265 Scarlett Crt |
| San Diego, CA | $220/mo | Extra Space Storage at 3808 Cedar St |
| Miami, FL | $287/mo | Extra Space Storage at 1781 S Park Rd |
| Portland, OR | $304/mo | Extra Space Storage at 500 NE 94th St |
| Seattle, WA | $307.80/mo | CubeSmart at 10724 16th Ave Sw |
| Los Angeles, CA | $406/mo | Public Storage at 1776 Blake Ave |
Common questions about 10x30 storage units
How much does a 10x30 storage unit cost?
The national median online rate for a 10x30 is $239.95/mo, across the 349 priced 10x30 units we track. Half of those units are cheaper than that and half are more expensive. What you actually pay depends on the city and the individual facility, so compare your own city rather than budgeting from the median.
How big is a 10x30 storage unit?
300 square feet: 10 feet wide and 30 feet deep, the same total floor area as two 10x15 units. If the ceiling is 8 feet, that footprint encloses roughly 2,400 cubic feet.
Is a 10x30 bigger than a two-car garage?
Not in floor area. A two-car garage is roughly 20 by 20 feet, or 400 square feet; a 10x30 is 300 square feet and half the width. The contents of a two-car garage will not automatically transfer into one.
What is the largest storage unit size?
10x30 is the largest of the six standard sizes, at 300 square feet. Larger and non-standard spaces exist at some facilities, but they are outside the standard size chart and are not tracked here.