How to Choose the Right Storage Unit Size
A practical guide to picking the right storage unit size — from 5×5 lockers to 10×30 drive-up bays. Includes a room-by-room calculator and common mistakes to avoid.
Renting a unit that's too small means a second trip or a second unit. Renting too large means paying for air. The right size comes down to what you're storing, how you'll pack it, and whether you need regular access.
Quick Reference: Common Storage Scenarios
| Unit Size | Approx. Space | Fits |
|---|---|---|
| 5×5 | 25 sq ft — large closet | Boxes, seasonal gear, small furniture |
| 5×10 | 50 sq ft — large bathroom | Studio apartment contents, bike + boxes |
| 10×10 | 100 sq ft — standard bedroom | 1–2 bedroom apartment |
| 10×15 | 150 sq ft — large bedroom | 2–3 bedroom home |
| 10×20 | 200 sq ft — one-car garage | 3–4 bedroom house or small vehicle |
| 10×25 | 250 sq ft — large garage | Vehicle + household contents |
| 10×30 | 300 sq ft — commercial bay | Full house contents or contractor storage |
Room-by-Room Estimate
Add up the rooms you're clearing and use this guide to estimate the unit size you need:
- Studio apartment: 5×10 is usually sufficient
- 1-bedroom apartment: 10×10 with some room to spare
- 2-bedroom apartment: 10×10 (packed tightly) to 10×15
- 3-bedroom house: 10×15 to 10×20
- 4+ bedroom house: 10×20 to 10×25, or two units
- Garage only: 10×10 to 10×20 depending on vehicle size
Climate Control: When You Need It
Standard drive-up units are fine for most items. Climate-controlled storage matters when you're storing items sensitive to temperature or humidity changes. In Canadian winters, unheated units can reach -30°C in Prairie cities.
- Electronics — computers, speakers, TVs: use climate control
- Wood furniture — solid wood warps and cracks: use climate control
- Photographs and documents — moisture damages permanently: use climate control
- Wine — temperature fluctuations ruin wine: use climate control
- Vinyl records — warping risk: use climate control
- Metal tools and equipment — standard is fine
- Plastic bins and sporting gear — standard is fine
- Appliances — standard is generally fine
Drive-Up vs. Interior Units
Drive-up access means you can park your vehicle directly in front of the unit — ideal for loading large or heavy items, or frequent access. Interior units (accessed through corridors) are usually climate-controlled and more secure, but require more effort to load.
Common Mistakes
- Underestimating volume — furniture looks smaller when you're deciding, larger when you're moving
- Ignoring ceiling height — most units are 8–10 ft tall; stacking matters for larger units
- Choosing climate control for items that don't need it — unnecessary 25% cost premium
- Picking the wrong access type — drive-up is faster to load but not always available for climate units
- Not asking about move-in promotions — first month free or 50% off is common; always ask
Packing Tips That Affect Your Size Choice
- Disassemble furniture where possible — legs off tables, frames off beds
- Use uniform box sizes — random sizes leave gaps that waste space
- Heavy items on the bottom, light items on top
- Leave a central aisle if you need regular access
- Wrap furniture in moving blankets to stack safely
- Label all boxes on the side, not the top