A 10 × 20 has 33% more floor area: 200 square feet compared with 150. The same 10-foot width gains 5 feet of depth. Compare what changes for your furniture, shelves and access route.
| Measurement | 10 × 15 | 10 × 20 |
|---|---|---|
| Width | 10 ft | 10 ft |
| Depth | 15 ft | 20 ft |
| Floor area | 150 sq ft | 200 sq ft |
| Price and availability | Ask the facility | Ask the facility |
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.
Read the 10 × 15 layout guide →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 route out that does not depend on moving your heaviest furniture.
Read the 10 × 20 layout guide →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 × 20 has 200 square feet of floor area, compared with 150 square feet in a 10 × 15. That is 50 extra square feet, or 33% more floor area. Ceiling height and door measurements are separate checks.
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.
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.