What Size Storage Unit Do I Need?
Direct Answer
The right storage unit size depends on how many belongings you have, the dimensions of your largest furniture and appliances, how many boxes you need to store, and whether you want walking space inside the unit for regular access. Making a quick inventory and measuring your biggest items is the best way to start — then compare your list to our storage size calculator for a recommendation.
Key Takeaways
- Unit size is one of the biggest factors in monthly cost — bigger units cost more.
- Measure your largest furniture before choosing a unit; dimensions matter more than room count.
- If you need frequent access, leave an aisle inside the unit rather than packing it wall-to-wall.
- Use vertical space carefully — stack sturdy boxes, but don't overload shelves or fragile items.
- When in doubt, call our team at 435-674-1974 to confirm which sizes are currently available.
Storage Size Comparison
Here are the indoor air-cooled unit sizes currently offered at Sunbrook Secure Storage in St. George. Current availability varies, so check our pricing page for live options.
| Unit Size | Approx. Floor Area | Common Use | Examples |
|---|---|---|---|
| 4×5 | 20 sq ft | Small items & boxes | Seasonal decorations, boxes, small tools |
| 5×8 | 40 sq ft | Small furniture & boxes | Small dresser, boxes, bicycle |
| 5×10 | 50 sq ft | Studio or small apartment | Mattress set, small sofa, boxes |
| 8×12 | 96 sq ft | 1–2 room furnishings | Furniture, appliances, boxes |
| 10×10 | 100 sq ft | 1-bedroom apartment | Bedroom set, sofa, table, boxes |
| 8×16 | 128 sq ft | 2–3 room furnishings | Multiple rooms of furniture |
| 10×15 | 150 sq ft | 3–4 room furnishings | Large furniture, appliances, boxes |
| 10×20 | 200 sq ft | Full home furnishings | Contents of a multi-bedroom home |
| 8×28 | 224 sq ft | Extra large storage | Large home, business inventory |
How to Estimate the Space You Need
- Make an inventory. List everything you plan to store, grouping by category (furniture, boxes, appliances, etc.).
- Measure large items. Note the length, width, and height of your biggest furniture and appliances.
- Estimate the number of boxes. Count your boxes and estimate an average box size.
- Decide whether you need an aisle. If you'll visit the unit regularly, leave a walking path down the center.
- Use vertical space carefully. Stack sturdy, same-size boxes. Don't stack fragile or heavy items on top of lighter ones.
- Compare your inventory with our calculator. Use the storage size calculator for a recommendation.
- Call Sunbrook if unsure. Our team can help you match your list to the right unit. Call 435-674-1974.
Storage Size by Moving Situation
Decluttering one room
4×5 or 5×8
May fit boxes, seasonal items, and a few small pieces of furniture.
Studio or small apartment
5×10
Often works for a mattress set, small sofa, and several boxes.
One-bedroom apartment
10×10
May fit a bedroom set, sofa, table, appliances, and boxes.
Multiroom home
10×15 or 10×20
Often works for the contents of a larger home or multi-room move.
Business inventory
10×15 or larger
Depends on inventory volume and whether you need aisle access.
Moving between homes
10×20 or 8×28
May fit full home contents during a transition period.
Student storage
5×8 or 5×10
Often works for boxes, small furniture, and apartment belongings.
These are general guidelines only. Actual fit depends on your specific belongings, packing method, and stacking. We cannot guarantee a specific unit will hold everything.
Common Sizing Mistakes
- Forgetting furniture dimensions. A "one-bedroom apartment" can mean very different things depending on your furniture. Measure the big pieces.
- Ignoring ceiling height. Sunbrook units have approximately 10-foot ceilings, so vertical stacking can add significant capacity.
- Packing without an access aisle. If you'll need items from the back, leave a center aisle instead of filling the unit completely.
- Choosing only by number of bedrooms. Two people with the same bedroom count can have very different storage needs.
- Failing to account for appliances. Washers, dryers, and refrigerators take up significant space.
- Renting based on guesses. Use the calculator and call us — guessing often leads to renting too much or too little.
Compare Sunbrook Storage Sizes
Ready to find the right fit? Check current availability, use our calculator, or call our team for help.