Selecting the right storage unit is important for efficiency, organization, and cost-effectiveness. Renting a portable storage unit that is too small can lead to overcrowding, making it difficult to access items and increasing the risk of damage.
On the other hand, choosing a unit that is too large means paying for unused space, which adds unnecessary expenses.
Understanding different storage unit sizes and how to maximize space helps you make an informed decision.
Whether you're storing seasonal decorations, household furniture, business inventory, or even vehicles, knowing what each unit size can accommodate ensures you get the best value for your money.
What Size Storage Unit Do I Need?
Storage units are typically measured by width and depth, but their actual storage capacity depends on cubic feet. Most storage units have an eight-foot ceiling, which allows for vertical storage, a key factor in maximizing available space.
For example, a 5’×8’ unit with an eight-foot ceiling provides 320 cubic feet of storage space, making it ideal for a small studio or dorm room.
A 10’×10’ unit, on the other hand, offers 800 cubic feet, making it suitable for multi-room storage when properly stacked.
Utilizing shelving, stacking efficiently, and strategically organizing can maximize any unit's space.
Small Storage Units: Ideal for Light Storage & Compact Spaces
Small storage units are perfect for personal belongings, seasonal items, and smaller apartments. They provide enough space for essential furniture and boxes without taking on unnecessary costs.
5’×5’ (25 sq. ft.) Equivalent to a Small Closet
This unit is great for storing seasonal decorations, office supplies, sports equipment, and small furniture pieces. It can accommodate a twin mattress, a small desk, suitcases, and approximately ten medium-sized boxes.
5’×8’ (40 sq. ft.) Best for Studio Apartments & Dorm Rooms
Designed for 500 square feet or fewer living spaces, this unit is large enough to store a twin or full-size mattress, a small dresser, chairs, and 10 to 15 boxes. It’s comparable to a 5’×10’ unit or a 10-foot truck.
8’×8’ (64 sq. ft.) Suitable for Small Apartments
This unit is ideal for one to two-room spaces or homes between 500 and 800 square feet. It can store a queen-size bed, a couch, coffee tables, small appliances, and up to 20 boxes.
8’×12’ (96 sq. ft.) Great for Small Homes
Designed for spaces between 500 and 1,000 square feet, this unit is large enough to accommodate sofas, dressers, a washer and dryer, and approximately 25 boxes.
Medium Storage Units: Best for Multi-Room Storage & Small Homes
Medium-sized units offer a practical storage solution for those needing more space for larger furniture, multiple rooms, or business inventory.
8’×16’ (128 sq. ft.) Perfect for a Two-Bedroom Home
This unit can accommodate a king-size bed, large appliances, multiple sofas, bookshelves, and around 30 boxes. It is comparable to a 10’×12’ storage unit or a 15-foot truck.
10’×10’ (100 sq. ft.) Equivalent to a Small Bedroom
Ideal for two-bedroom apartments, this unit can store a refrigerator, washer and dryer, furniture, and 30 to 40 boxes.
10’×15’ (150 sq. ft.) Best for a Three-Bedroom Apartment
Great for both personal and business storage, this unit can hold large furniture, patio sets, commercial equipment, and over 50 boxes.
Large Storage Units: Designed for Full-Home Storage & Business Inventory
Large units offer ample space and flexibility for long-term storage, business inventory, or vehicle storage.
8’×20’ (160 sq. ft.) Ideal for Larger Homes & Business Storage
This unit is suitable for two- to four-bedroom homes or spaces up to 1,500 square feet. It can accommodate large sectionals, beds, dressers, appliances, office equipment, and over 50 boxes.
10’×20’ (200 sq. ft.) Comparable to a Small Garage
This unit is perfect for four-bedroom homes or vehicle storage, including motorcycles, jet skis, or compact cars. It can hold multiple bedroom sets, large appliances, and dining furniture.
10’×25’ & 10’×30’ Designed for Large Homes & Commercial Use
These larger units are best for five-bedroom homes, business inventory, warehouse storage, trailers, and commercial equipment.
How to Determine Storage Unit Size?

Choosing the right storage unit is more than just picking a size; it’s about efficiency, organization, and long-term planning.
Before selecting a unit, assessing the items you’ll be storing is essential. Consider measuring large furniture and appliances to ensure they fit properly.
Stacking boxes and using shelves can help maximize space while placing frequently accessed items near the entrance makes retrieving them easier.
If you anticipate storing more items in the future, selecting a slightly larger unit can save you time and money later on.
Find the Right Storage Solution with The Mobile Storage Guy
Selecting the right storage unit doesn’t just come down to size; it’s about maximizing your space while ensuring security and convenience.
At The Mobile Storage Guy, we specialize in secure, flexible, and affordable storage solutions for every need.
Whether you require a compact unit for seasonal storage, a mid-sized option for furniture and appliances, or a large unit for an entire home or business inventory, we have a broad and effective range of storage options to fit your specific requirements.
With a strong commitment to exceptional customer service, we provide expert guidance to help you maximize your storage space efficiently.
Our units are designed to accommodate personal, residential, and commercial storage needs, ensuring that your belongings remain safe, organized, and easily accessible.
When it's about choosing a portable storage solution, peace of mind is just as important as square footage.
That’s why The Mobile Storage Guy is dedicated to making the entire process hassle-free, seamless, and stress-free. Contact us today to find the perfect storage unit for your needs.