Choosing the right storage unit size can feel overwhelming. Too small, and you may run out of space or struggle to access your belongings. Too large, and you could end up paying for space you don't actually need.
The good news? Finding the right storage unit doesn't have to be complicated.
Whether you're moving, renovating, downsizing, storing business inventory, or simply creating more space at home, understanding common storage unit sizes can help you make the best decision.
This guide will walk you through how much storage space you may need and what factors to consider before renting a unit.
Why Choosing the Right Storage Unit Size Matters
A storage unit should give you enough room to comfortably store you belongings while still allowing you to access them when needed.
Choosing the right size helps you:
- Avoid paying for unused space
- Keep your belongings organized
- Create walking paths for easier access
- Protect your items from being overcrowded
- Make future additions easier
Before choosing a unit, think about what you're storing, how long you'll need storage, and how often you plan to access your belongings.
Common Storage Unit Sizes Explained
Storage units come in a variety of sizes to accommodate everything from a few boxes to an entire household.

Small Storage Units (5x5 and 5x10)
Small storage units are a great option for customers who need a little extra space without storing large furniture or major household items.
A small unit may be ideal for:
- Seasonal decorations
- Clothing and personal items
- College belongings
- Important documents
- Small furniture
- Sports equipment
A 5x10 unit can typically hold the contents of a small bedroom or dorm room.
Medium Storage Units (10x10 and 10x15)
Medium storage units are some of the most popular options because they provide flexibility for a wide range of needs.
These units are commonly used for:
- One-bedroom or two-bedroom apartments
- Furniture during a home renovation
- Appliances
- Business inventory
- Larger collections
- Multiple rooms of household belongings
If you're unsure where to start, a medium-sized unit is often a good option because it provides additional room without taking up unnecessary space.
Large Storage Units (10x20 and Larger)
Large storage units are designed for customers who need significant storage capacity.
They are commonly used for:
- Multi-bedroom homes
- Major moves
- Long-term storage
- Business equipment
- Large furniture collections
- Vehicles and recreational items at select locations
These units provide the space needed for larger projects while keeping belongings secure and organized.
How to Choose the Right Storage Unit Size
Before renting a storage unit, consider these questions:
1. What are You Storing?
Start by making a list of everything you plan to store.
Are you storing:
- Boxes only?
- Large furniture?
- Appliances?
- Business inventory?
- Seasonal items?
The type of belongings you have will determine how much space you need.
For example, storing boxes of clothing requires much less space than storing an entire home's worth of furniture.
2. How Long Will You Need Storage?
Your storage timeline can impact the size you choose.
For short-term storage during a move, you may need enough room for easy access while transitioning between homes.
For long-term storage, consider leaving extra space so you can organize your belongings and access items without unpacking everything.
3. Will You Need to Access Your Belongings?
If you plan to visit your storage unit frequently, avoid filling it completely.
Leaving space between items allows you to create walkways and easily reach what you need.
If you're storing items you won't need for months, you may be able to maximize your space by packing more efficiently.
Tips for Maximizing Your Storage Space
No matter what size unit you choose, smart packing can help you get the most from your space.

Use Uniform Boxes
Using boxes that are similar in size makes stacking easier and helps prevent wasted space.
Label Everything
Clearly labeled boxes make it easier to find items later without digging through everything.
Store Large Items Strategically
Place large furniture along the edges of your unit and stack similar boxes around them.
Leave a Pathway
Avoid packing your unit from floor to ceiling without a plan. Creating a small walkway can save time when you need to access your belongings.
Use Vertical Space
Stack boxes upward and use shelving when appropriate to maximize available space.
Do I Need Climate-Controlled Storage?
The size of your storage unit is only one factor to consider. The type of storage matters too.
Climate-controlled storage may be a better option for belongings that can be affected by temperature changes or humidity, including:
- Wood furniture
- Electronics
- Artwork
- Important documents
- Family heirlooms
- Collectibles
If you’re unsure whether climate-controlled storage is right for you, our team can help you choose the best option.
Why Choose Morningstar Storage?
At Morningstar Storage, we make finding the right storage solution simple.
Our team can help you choose a unit size based on your belongings, timeline, and budget. We offer a variety of storage options designed around your needs, including convenient access, clean facilities, and flexible month-to-month rentals.
Many Morningstar Storage locations also offer our 12-Month Rate Guarantee, giving customers added confidence that their storage costs won't unexpectedly increase during their first year.
Whether you need space for a few boxes or an entire household, we're here to help you find the right fit.
Frequently Asked Questions
What is the most common storage unit size?
A 10x10 storage unit is one of the most commonly rented sizes because it works well for many apartment, home, and business storage needs.
How do I know what size storage unit I need?
Make a list of everything you plan to store and consider how often you’ll need access. A storage professional can also help recommend the right size.
Can I change storage unit sizes later?
Yes, many customers move into a larger or smaller unit as their storage needs change, depending on availability.
Should I rent a bigger storage unit than I need?
Leaving some extra room can be helpful, especially if you plan to access your belongings regularly or add more items later.
Find the Right Storage Space Today
The right storage unit size depends on what you're storing, how long you need storage, and how you plan to use the space.
Whether you're moving, organizing, your home, or creating room for what matters most, Morningstar Storage offers flexible storage solutions designed to make life easier.
Explore storage options near you and let our team help you find the perfect fit.
Ready to Get Started?
Our Morningstar managers are ready to help you with your storage needs. Find the location nearest you!