A 10 × 30 has 50% more floor area: 300 square feet compared with 200. The same 10-foot width gains 10 feet of depth. Compare what changes for your furniture, shelves and access route.
Label sizes, before you check a real unit
Measurement
10 × 20
10 × 30
Width
10 ft
10 ft
Depth
20 ft
30 ft
Floor area
200 sq ft
300 sq ft
Price and availability
Ask the location
Ask the location
SAME THINGS, TWO SIZES
The same example things in a 10 × 20 and a 10 × 30.
Both drawings hold all 7 example items with a 30 inch walkway.
That leaves about 98 square feet of open floor in the 10 × 20 and about 173 in the 10 × 30. Open floor is room to spread things out or to add more later. Whether that is worth a larger space is your call, and the rate is a separate question for the location.
10 × 20 ft
7 of 7 example items drawn
10 × 30 ft
7 of 7 example items drawn
Example furniture and boxes
Things you need soon
A walkway about 30 inches wide
What each drawing shows, in whole square feet
Measurement
10 × 20
10 × 30
Example items drawn
7 of 7
7 of 7
Floor the items cover
about 52 sq ft
about 52 sq ft
Floor the walkway uses
about 50 sq ft
about 75 sq ft
Open floor left over
about 98 sq ft
about 173 sq ft
How to read these drawings
Both drawings hold the same 7 example things: sofa, dresser, 3 boxes, holiday bins and bike.
A walkway about 30 inches wide runs from the door to the back wall.
The holiday bins and the bike sit beside the walkway nearest the door. The rest goes toward the back.
Everything sits on the floor. Stacking, shelves and tipping are not drawn.
Sizes are the size on the label (width times depth). A real unit’s inside size, door and ceiling height can be different, so check them with the location.
Illustration with example items, not a photo of a real unit. It shows label sizes and does not promise your things will fit.
200 square feet
Divide the depth into zones such as household furniture, boxed belongings and seasonal items. Label the zones in your item notes, and put things needed soon nearest the entrance.
Try a long path with short branches into groups. A box at the far end should have a way out that does not depend on moving your heaviest furniture.
Plan the back of the room first and work toward the door. Give each group a clear name, keep a location note with each box, and keep the things you need often apart from long-term storage.
Keep a clear path down the length and keep shelf fronts reachable. Check that a big item can come out of its area without taking apart the stacks around it.
Start one list and try both room sizes. Place the biggest pieces, keep a path to what you need, and see if the extra 100 square feet really helps. Save your layout with a name before you try changes, so you can go back to one you liked.
A 10 × 30 has 300 square feet of floor area, compared with 200 square feet in a 10 × 20. That is 100 extra square feet, or 50% more floor area. Ceiling height and the door are checked separately.
Should I choose the smallest size where my items fit?
Only if you can still use the space the way you need. Leave room for padding, safe stacking and reaching your things. A tightly packed unit can hold everything and still make every visit hard. Compare layouts you can reach into before you ask about a real unit.
Can this comparison tell me which unit costs less?
No. This page compares sizes, not live prices or availability. See Bakersfield storage locations for listed prices, or ask the location for the price and terms of each unit that works, then compare the total cost and how you will use it.