The average storage unit size in the US is a 10×10, which fits most one-bedroom apartments and smaller two-bedroom homes. Here’s every standard size, what it holds, and what you might pay.
Average Storage Unit Sizes at a Glance
If you’re in the middle of a move and want the short answer:
| Unit Size | What Fits | Average price |
|---|---|---|
| 5×5 | A walk-in closet’s worth. A few boxes, a twin mattress, a small desk, and seasonal gear or a bike. | $53/mo |
| 5×10 | A studio’s worth: bed, dresser, desk, and boxes | $75/mo |
| 10×10 | A one-bedroom apartment, or a tightly packed two-bedroom | $120/mo |
| 10×15 | A two- or three-bedroom home with a couch and TV | $158/mo |
| 10×20 | A three- or four-bedroom home | $194/mo |
| 10×25 | A three- to five-bedroom home and a vehicle | $249/mo |
| 10×30 | A five-bedroom home in full | $258/mo |
| 10×40 | A large estate or bulk inventory | $250–$600+ / mo |
These are national averages for standard units at traditional facilities. But location matters: prices are higher in urban or dense areas, like college towns.
Another cost consideration: if you’re storing delicate items, like electronics or wood furniture, you’ll probably need climate control, which can add up to 50% to your monthly bill.
Locking in the right size starts with knowing exactly what you’re storing. If you’re still working through that, our moving checklist covers the full process.
Small Storage Units (5×5 and 5×10)
Storing one room’s worth of stuff? You’re in small-unit territory.
5×5 storage unit
Picture a 5×5 as a walk-in closet: 25 square feet of floor space.
What fits: Up to 10 large moving boxes, a twin mattress, a small desk or chair, plus seasonal decorations, a bike, or sports gear. If everything you’re storing would fit in a cargo van, this size works.
Who it’s for: Someone clearing out a closet or a student heading home for the summer with a few bins and a bike.
What it won’t hold: More than one room’s worth. Once large furniture enters the picture, look at a 5×10.
5×10 storage unit
A 5×10 gives you 50 square feet, closer to a small spare bedroom than a closet.
What fits: A queen mattress set, dresser, and loveseat alongside 15–20 boxes. There’s room for a bike, too.
Who it’s for: Anyone moving out of a studio into a place that isn’t ready yet.
What it won’t hold: A full living room set with a sectional, or a washer and dryer alongside bedroom furniture. Combining rooms? Look at a 10×10.
Medium Storage Units (10×10 and 10×15)
Most storage renters end up here. A 10×10 holds a surprising amount when you make use of its height, and a 10×15 can hold two full bedrooms plus a living room.
10×10 storage unit
The 10×10 is the most popular storage unit size in the U.S. If you’re clearing out a one-bedroom or a modest two-bedroom, this is your size.
What fits: A sectional, a fridge, a washer and dryer, and around 40 large boxes. Most riding mowers fit, if this isn’t a house move.
Who it’s for: Anyone downsizing who needs to stash pieces they’re not ready to part with. It’s also the go-to for anyone between moves from a one-bedroom.
What it won’t hold: Three full rooms or a two-bedroom with a full dining room set.
10×15 storage unit
A 10×15 is about the size of a large bedroom. It’s the natural choice when you’ve got a living room set plus two bedrooms to move.
What fits: The full contents of a two- to three-bedroom home: furniture, large appliances, and home gym equipment. A motorcycle, ATV, or small car fits, also. Picture around 60 large boxes.
Who it’s for: Families between homes, or anyone staging a house for sale who needs the rooms cleared.
What it won’t hold: A full three-bedroom home with a lot of large pieces.
Large Storage Units (10×20 and Up)
Large units start at the size of a one-car garage and climb from there. They’re the right call for a full home move, a long renovation, or storing a vehicle alongside your household stuff.
10×20 storage unit
A 10×20 is about the size of a standard one-car garage.
What fits: The contents of a three- or four-bedroom home, including furniture and appliances. Or, a large pickup or small boat and some boxes.
Who it’s for: Anyone handling a full house move or storing a larger vehicle.
What it won’t hold: Larger vans or RVs. If you need to store a vehicle and full house contents together, step up to a 10×25.
10×25 storage unit
At 250 square feet, a 10×25 holds a three- to five-bedroom home plus a vehicle.
What fits: Everything a 10×20 holds, plus a full extra room’s worth of furniture and a van or extended-cab truck.
Who it’s for: Larger families on a long-distance move, or anyone putting a whole house into storage during a sale or major renovation.
10×30 storage unit
A 10×30 is 300 square feet, and most facilities list this as their largest standard unit.
What fits: Oversized furniture sets, multiple large appliances, and a large truck or car.
Who it’s for: Big household moves, long deployments, drawn-out renovations, or commercial inventory. If your whole life is going into one unit for a while, this is it.
10×40 storage unit
A 10×40 is the largest standard storage unit you’ll find. Most facilities don’t stock it, so call ahead.
What fits: Bulk commercial inventory, heavy equipment, or the full contents of a large estate.
Who it’s for: Commercial operators moving or storing large stock, and anyone clearing out a sizable property.
Vehicle Storage: What Size You Actually Need
Instead of thinking in square feet, think in length. How long is your vehicle, and will it clear the door?
- A 10×15 works for most two-door cars and hatchbacks. But check your car’s exact length before booking.
- A 10×20 fits most sedans, SUVs, crossovers, minivans, and pickups. Don’t count on squeezing much else in.
- A 10×30 is what you need for larger vehicles, like cargo vans, super-duty trucks, and extended cab pickups. If your facility doesn’t have one available, a 10×25 often gets the job done.
- If you’re storing a motorcycle, a 5×10 indoor unit is the standard fit and keeps it fully covered.
Always check door height, too, especially for trucks with roof racks.
When Average Storage Unit Sizes Don’t Work for You
Most facilities give you a menu of fixed sizes. Neighbor lets you order exactly what you need, on or off the menu. Hosts in your area rent out their garages, sheds, and spare land, and their listings have precise dimensions, photos, and reviews. There’s no need to estimate, size up, and pay for space you won’t use.
You can save up to 50%, compared to traditional storage, because hosts don’t have the overhead of a facility. They often offer a discount of up to half off the first month, too.
One search shows you these neighborhood spaces alongside traditional units from nationwide facilities, so you can compare everything available at once.
Every booking includes up to $25K in renter property protection. With 4.9 stars across 689,000+ reviews, Neighbor helps renters find storage easier, cheaper, and closer to home.
Browse listings near you, or give us a call to talk it through.
Frequently Asked Questions
What’s the most popular average storage unit size?
The 10×10 is the most popular average storage unit size in the U.S. It fits common storage scenarios, like moving or decluttering a one- or two-bedroom home.
How tall are storage units?
Most storage facilities build their units with 8-foot ceilings, though some offer 10-foot ceilings for oversized items. Storage lockers run shorter, usually 3–5 feet, which is why they’re priced lower.
How much does an average storage unit cost per month?
A standard 10×10 unit at a traditional facility averages $120 a month nationally, and it’s $137 a month for climate control. But local storage options, like sheds, garages, and driveways, can cost up to 50% less when you book them on Neighbor.
What size storage unit fits a king bed?
A king mattress (76″x80″) fits standing upright in a 5×10 unit if that’s all you’re storing. For a full king bedroom set with a frame, dresser, and nightstands, plan for a 10×10 minimum, and at least a 10×15 if you’re storing other furniture.
What size storage unit do I need for a 2-bedroom apartment?
A 10×10 fits a simply furnished two-bedroom apartment, including furniture and boxes. If you have a full dining set or large appliances, size up to avoid cramming.
What’s the right storage unit size for a car?
Most cars, sedans, SUVs, and pickups fit in a 10×20 unit. Compact cars and hatchbacks can often fit in a 10×15. Large trucks, vans, and SUVs with roof racks need at least a 10×25. Always check your vehicle’s height and length against the unit’s dimensions before booking.
