RRoseberryMini Storage

What size storage unit do I need?

Six sizes at Roseberry Mini Storage in Hattiesburg, MS, from a walk-in closet to a double garage. Here is what actually fits in each one.

5x10 storage unit — 50 sq ft, about a large walk-in closet

The smallest unit we rent, and the one most people underestimate. Fifty square feet with eight-foot ceilings holds considerably more than it looks like from the doorway, provided you stack properly and stand furniture on end.

What fits in a 5x10

  • A mattress set and bed frame
  • A chest of drawers and a couple of chairs
  • Fifteen to twenty medium boxes
  • Seasonal decorations, luggage and sports kit
  • A motorcycle, with room to spare

Best for

Students storing a dorm or apartment room over summer, clearing one room for a renovation, or keeping the overflow that has taken over a spare bedroom.

5x15 storage unit — 75 sq ft, about a narrow single-car garage

Half as much again as a 5x10, and the extra five feet of depth matters more than the number suggests — it is the difference between stacking to the door and keeping a walkway to the back.

What fits in a 5x15

  • The contents of a small one-bedroom apartment
  • A sofa, armchairs and a dining set
  • Appliances alongside twenty-plus boxes
  • Long items like skis, ladders or rolled rugs

Best for

A one-bedroom move, or anyone who wants to reach their things without unpacking the unit first. A common upgrade from a 5x10 once people see the space.

10x10 storage unit — 100 sq ft, about half a standard garage

The size most people end up in, and a sensible default if you are genuinely unsure. A hundred square feet takes a flat or small house without forcing you to choose what to leave behind.

What fits in a 10x10

  • The contents of a one or two bedroom apartment
  • A washer and dryer, fridge, sofa and queen bed
  • A dining table with chairs
  • Thirty or more boxes stacked along one wall

Best for

Moving between homes, a long trip or deployment, or a business keeping stock and records somewhere dry and reachable.

10x15 storage unit — 150 sq ft, about a large single-car garage

Our most common unit. Room for a whole household with space left to walk in, which is the part people value once they have lived with a unit packed wall to wall.

What fits in a 10x15

  • A two or three bedroom home, appliances included
  • Several bedrooms of furniture plus boxes
  • Large items — sectional sofas, pianos, exercise equipment
  • Business inventory with aisles to work in

Best for

A full-house move, an extended renovation, or storing a home while you decide what happens next.

10x20 storage unit — 200 sq ft, about a standard single-car garage

Two hundred square feet is a garage, and it behaves like one. Enough for a sizeable house or a vehicle with belongings packed around it.

What fits in a 10x20

  • A three or four bedroom house
  • A car, with boxes along the walls
  • Major appliances and full bedroom sets together
  • Contractor equipment and materials

Best for

A whole-house move, vehicle storage, or a trade keeping tools and stock in one place.

20x15 storage unit — 300 sq ft, about a double garage

The largest we have, and we only have a couple. Three hundred square feet for when nothing smaller will do.

What fits in a 20x15

  • A large family home in one unit
  • Multiple vehicles or a vehicle plus a household
  • Substantial business inventory

Best for

Large households and commercial storage. Worth calling ahead — these come up rarely.

How to choose, if you are still not sure

When you are between two sizes, take the larger one

A month of the next size up costs less than renting a second unit, and far less than discovering on moving day that everything does not fit while a van sits outside. The extra floor space also lets you leave a walkway, which is what makes a unit usable rather than just full.

Measure the big things, estimate the boxes

Sofas, appliances, mattresses and dining tables decide your size; boxes fill the gaps around them. Write down the footprint of your five largest items and work from there rather than guessing from the number of rooms.

Height is free space most people waste

Our units have eight-foot ceilings. Stacking boxes properly, standing mattresses and table tops on end, and putting lighter things on top can be the difference between a 5x10 and a 10x10. Heaviest at the bottom, nothing you need soon buried at the back.

Leave yourself an aisle

Almost everyone comes back for one specific thing. A walkway down the middle, with labels facing out, turns a ten-minute search into a thirty-second one. Plan for it when you choose the size.