A 10 × 15 has 50% more floor area: 150 square feet compared with 100. The same 10-foot width gains 5 feet of depth. Compare what changes for your furniture, shelves and access route.
Nominal dimensions, before checking an actual unit
Measurement
10 × 10
10 × 15
Width
10 ft
10 ft
Depth
10 ft
15 ft
Floor area
100 sq ft
150 sq ft
Price and availability
Ask the facility
Ask the facility
10 × 10 ft
100 square feet
Place the biggest pieces first, then try a row of shelves along one wall and boxes grouped by room. Leave the center or one edge open so you can reach the collection.
Compare a central path with a path down one side. Put boxes you will need together so retrieving one does not mean moving several unrelated stacks.
Try bulky furniture toward the back, shelves along a side, and frequent-use boxes toward the entrance. Keep the groups visible from an access route instead of filling every gap.
Mark a continuous route from the door to the back group. Keep shelf fronts reachable and leave space to lift a box off its shelf.
Start one list and try both room sizes. Place the largest pieces, keep a path to what you need, and see whether the extra 50 square feet solves a real problem. Save a named layout before experimenting so you can return to an arrangement you liked.
A 10 × 15 has 150 square feet of floor area, compared with 100 square feet in a 10 × 10. That is 50 extra square feet, or 50% more floor area. Ceiling height and door measurements are separate checks.
Should I choose the smallest size where my items fit?
Only if you can still use the space the way you need. Include padding, permitted stacking and room to retrieve belongings. A dense layout can fit your list while making every visit difficult. Compare accessible arrangements before asking about an actual unit.
Can this comparison tell me which unit costs less?
No. This page compares dimensions, not live prices or availability. Request the actual price and terms for each suitable unit from the facility, then compare the total cost and how you will use the space.
Updated September 6, 2026. Illustrative footprints; confirm actual usable measurements and doors.
10 × 10 vs 10 × 15 storage: compare the space | Bakersfield Self Storage