The Complete Guide to Storage Unit Sizes: What Fits and How to Choose the Right One
Modern Storage®
November 7th, 2025
Choosing the right storage unit can feel like a guessing game, too small and you’re cramming boxes into corners, too big and you’re paying for empty air.
Let’s end the guesswork. At Modern Storage®, we make finding your perfect fit easy. Whether you’re storing seasonal décor, downsizing your home, or managing an entire move, this guide breaks down exactly what fits in each storage unit size and how to choose confidently.
Storage Unit Sizes at a Glance
A 5×5 unit is ideal for closet overflow, comfortably fitting 5–10 boxes, seasonal decorations, files, or small electronics.
A 5×10 unit works great for a small apartment, with room for a twin bed, dresser, TV, boxes, or bicycles.
A 10×10 unit fits a one-bedroom home, holding a mattress set, sofa, kitchen table, chairs, and small appliances.
A 10×15 unit is perfect for a two-bedroom home, easily storing bedroom sets, large furniture, a washer and dryer, and sports gear.
A 10×20 unit suits a full household, with space for 3–4 rooms of furniture, lawn equipment, or compact vehicles.
And finally, a 10×30 unit is best for large homes or business use, offering plenty of room for a full household plus garage contents, commercial inventory, or even small vehicles.
How to Choose the Right Storage Unit
1. Start by Listing Everything
Make a quick inventory before you reserve. It’s easy to underestimate how much you own (especially when it’s still in closets or under beds).
2. Stack Smart
Use uniform boxes for efficient stacking. Always place heavier items on the bottom and lighter ones on top to prevent crushing.
3. Think Vertical
You’re paying for cubic feet, not just floor space. Use tall shelving to double your usable area.
4. Plan for Access
If you’ll need to reach things occasionally, leave a walkway through the middle. You’ll thank yourself later.
5. Consider Climate Control
Electronics, furniture, and photos hate heat and humidity. Modern Storage® offers climate-controlled units to protect your items year-round.
Visualizing What Fits in Each Size
Imagine walking through your home and “packing” each room visually:
- 5×5 – The Closet Saver: Seasonal clothes, decorations, and a few boxes.
- 5×10 – The Studio Special: Perfect for dorms or small apartments.
- 10×10 – The One-Bedroom Hero: Fits furniture, a mattress, and 15–20 boxes.
- 10×15 – The Move-In Ready: Two bedrooms’ worth of furniture, appliances, and décor.
- 10×20 – The Family Fit: Great for moving, remodeling, or temporary home transitions.
- 10×30 – The Everything Unit: For large households, business inventory, or car storage.
Why Choose Modern Storage®
We’re not just about square footage, we’re about peace of mind.
✅ Clean, secure, and modern facilities
✅ Climate-controlled and drive-up options
✅ Flexible month-to-month leasing
✅ Online payments and account management
✅ Friendly on-site team ready to help you choose. Wherever life takes you next, Modern Storage® gives you the space to make it happen.
Bonus: Want More Real-World Storage Insights?
Check out Modern Storage® Unpacked, our official podcast where we talk all things moving, construction, real estate, and modern living.
🎙️ Listen here → Modern Storage® Unpacked on Spotify
Still Not Sure What Size You Need?
If you’re unsure which storage unit is right for you or just want to see real examples of how people use their space, check out Modern Storage® on social media!
We share videos, walkthroughs, and real-life storage tips that make it easier to visualize your options.
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Stay inspired, stay organized, and get a closer look at what makes Modern Storage® the smarter way to store.
Final Takeaway
Choosing the right unit doesn’t have to be complicated. Start by picturing your items, think about how often you’ll access them, and choose a secure, climate-controlled space with a team that actually cares. That’s Modern Storage® storage done smarter.
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