How Big Is a 5x15 Storage Unit?

Sometimes, all you need is a little space to make room for a lot more in life.

Have you ever looked around your home and thought, “Where did all this stuff come from?” You’re not alone.

According to the Self-Storage Association, nearly 1 in 10 households in the U.S. rent a storage unit, and one of the most popular options is the 5x15 storage unit.

It’s compact, affordable, and surprisingly versatile — but just how big is it, and what can it really hold?

Imagine a space about the size of a large walk-in closet or a small hallway; that’s roughly 75 square feet of floor space. However, with nearly 600 cubic feet of usable space, a well-packed 5x15 storage unit can store more than you might expect.

If you're wondering what fits in a 5x15 storage unit or if it’s even worth it, you’re in the right place. In this guide, let’s break down everything you need to know about a 5x15 storage unit.

Understanding the Size of a 5x15 Storage Unit

If you've never used self-storage before, a 5x15 storage unit might sound small, but it can actually store quite a bit.

Exact Dimensions and Volume

A standard 5x15 storage unit is:

• 5 feet wide
• 15 feet deep
• Usually around 8 feet tall

This gives you a total of:

75 square feet of floor space

600 cubic feet of storage volume

That’s enough space to hold the contents of a large bedroom, a small one-bedroom apartment, or two office rooms.

What Does That Size Look Like in Real Life?

To help you visualize it, a 5x15 storage unit is similar in size to:

• A large walk-in closet
• A spacious hallway or corridor
• Half of a one-car garage
• A small home office or studio space

If you're storing boxes or bins, you could easily fit:

• Around 120–150 medium-sized boxes
• A queen-size bed, a desk, and a dresser stacked on top
• Seasonal gear like skis, holiday decorations, or camping supplies

Layouts May Vary Slightly

Not every 5x15 storage unit is built the same. Depending on the facility, you might find:

• Taller ceilings (some go up to 8 ft)
• Wider units for easier access
• Indoor vs. drive-up access points

All of these can affect how much and what you can store. That’s why it’s helpful to check the unit type and layout when reserving.

Not sure if a 5x15 unit is the right size for you? Check out our complete Storage Unit Size Guide  to compare all unit sizes and find the perfect fit for your needs.

Types of 5x15 Storage Units

While every 5x15 storage unit offers the same amount of floor space, the type of unit you choose can impact how you use it. Most self-storage facilities offer a few different types to match various needs, whether you’re storing personal items, business supplies, or seasonal gear.

Let’s take a look at the most common types of 5x15 storage units.

Indoor 5x15 Storage Units

Indoor units are located inside the storage building and are typically accessed via secure, climate-controlled hallways. This setup provides added protection from the weather, pests, and dust.

Benefits of indoor units:

• Often climate-controlled
• Protected from outdoor elements
• Well-lit, clean, and secure

• Ideal for storing electronics, documents, clothes, or collectibles

Outdoor 5x15 Storage Units

Outdoor units are accessible from the outside of the building, often with drive-up access similar to a small garage. These are great if you want quick and easy loading or unloading.

Best for storing:

• Heavy items like small furniture or bins
• Tools and equipment
• Items you access frequently

Outdoor 5x15 storage units are typically not climate-controlled, so they're better suited for belongings that are not temperature-sensitive.

Climate-Controlled 5x15 Storage Units

Climate-controlled storage keeps your items in a stable temperature and humidity range, which helps protect them from damage due to heat, cold, or moisture. These units are especially useful for delicate or valuable items.

Perfect for storing:

• Wooden or leather furniture
• Photos, books, or documents
• Electronics or musical instruments

Climate-controlled 5x15 storage units are typically indoor units, but some facilities may also offer outdoor versions with temperature control.

What Can You Fit in a 5x15 Storage Unit?

If you're looking at a 5x15 storage unit and wondering if it’s big enough for your stuff. At first glance, 75 square feet might not sound like much. But when used wisely, this space can hold a surprising amount of belongings.

Let’s break it down so you know exactly what fits in a 5x15 storage unit.

Common Household Items That Fit

It’s a great option for storing personal or household items you don’t need daily access to.

Here’s what can typically fit inside:

• A queen or king-size bed (with frame and mattress)

• Sofa or sectional (up to 3 pieces)

• Coffee table and end tables
• Dresser, nightstands, and bookshelves
• Dining table with chairs
• Washer and dryer set
• Large area rugs
• Medium to large moving boxes
• Lamps, mirrors, and small household décor

Business or Office Items

A 5x15 self-storage unit is also a popular choice for small businesses or remote workers who need extra space for:

• Filing cabinets and paperwork

• Inventory and product stock

• Office chairs and desks
• Extra monitors, printers, and tech equipment
• Trade show booths and signage

• Packaging materials and shipping supplies

Seasonal or Specialty Storage

Need to swap out items throughout the year? A 5x15 storage unit is the perfect solution for:

• Bicycles, scooters, and sporting gear
• Camping equipment and tents
• Lawn mowers and gardening tools
• Patio furniture and seasonal décor
• Holiday decorations (indoor/outdoor)
• Extra clothing bins or wardrobe racks
• Off-season appliances or HVAC units

Recommended Uses for a 5x15 Storage Unit

A 5x15 storage unit is incredibly versatile when used for the right purpose. Whether you're a student, a business owner, or someone just looking to reclaim a bit of space at home, this unit can help in more ways than you might expect.

Let's examine who benefits most from a unit of this size.

Who It’s Best For

• Apartment renters and city dwellers: Ideal for those in smaller living spaces who need off-site storage for extra belongings.
• Students and recent grads: Store dorm or apartment items during summer breaks, study abroad, or transitional moves.
• Military families: A great mid-size option when moving between bases or during deployment.
• Small business owners: Use it to store inventory, business records, supplies, or seasonal products.
• Remote workers and freelancers: Store extra office furniture, equipment, or files that don’t fit at home.
• Hobbyists and collectors: Great for storing items like musical instruments, crafting supplies, or sports gear.

Situations When This Size Is Ideal

• Storing the contents of a large bedroom or studio apartment: Furniture, boxes, and appliances all fit easily.

• During renovation or remodeling projects:  Protect valuable furniture and personal items from dust or damage.

• Moving or downsizing: Use it for temporary storage between homes or when merging households.

• Inventory overflow or seasonal stock: Perfect for small business owners who need flexible space without leasing a warehouse.
• Garage or shed overflow: Store tools, bicycles, gardening equipment, or seasonal items to free up space at home.
• Organizing a home office: Keep archived paperwork or unused office furniture securely out of the way.

Special Features & Add-Ons to Look For

Not all 5x15 storage units are built the same. Beyond just square footage, the real value often comes from features and extras that make your storage experience more secure and more convenient.

Here are some of the most useful features to look for when choosing a 5x15 storage unit.

Climate Control

A climate-controlled 5x15 storage unit helps protect your items from extreme temperatures and moisture. If you're storing anything sensitive to heat, cold, or humidity — like electronics, books, wooden furniture, or clothing — this is a must-have.

Secure Access & Facility Features

Security matters — even for a small unit. Look for storage facilities that offer:

• 24/7 surveillance cameras
• Gated access with keypads or app-based entry
• Individual unit alarms (at some locations)
• Well-lit hallways and exteriors

These features give you peace of mind that your belongings are safe, even if you're not checking in frequently.

Convenient Loading & Unloading

Storage shouldn’t be a hassle. A few small perks can go a long way:

• Carts and dollies available onsite

• Elevator access for multi-story indoor facilities

• Drive-up access for outdoor 5x15 units
• Wide hallways and loading bays for easier movement

Especially if you’re moving heavy boxes or furniture into your 5x15 storage unit, these extras can save time and your back.

Digital Tools & Support

Modern storage facilities often come with digital conveniences that make managing your unit even easier:

• Online rentals and payments
• Mobile app for gate access
• Auto-billing and reminders
• Virtual unit tours or size guides

If you're comparing facilities, don’t just look at price — check what kind of support and tech they offer, too.

Cost of a 5x15 Storage Unit

The real cost of renting a 5x15 storage unit is more than just looking at the monthly rate. Let’s break down everything, so you're fully informed.

Monthly Rental Costs

Based on research across multiple sources:

• Standard (non-climate-controlled) 5x15 units typically range from $85 to $140 per month.
• Climate-controlled 5x15 units usually cost between $115 and $170 per month.
• The national average non-climate-controlled rate for a 5x15 unit is about $105/month, while climate-controlled rates run around $140/month.

Monthly Cost Table (5x15 Unit)

Additional Fees to Budget For

• Administrative/Move-In Fee: Many facilities charge a one-time move-in fee, typically $15–$40, and some include initial discounts or the first month’s rent.

• Insurance Cost: Optional storage insurance usually ranges from $12 to $25/month, depending on the provider and coverage level.

• Taxes & Sales Tax: Some states and cities apply sales tax or local business tax on storage rentals—always check local regulations.

• Discounts & Promotions: Common offers include $1 for the first month, free second month, or long-term rental discounts—especially when booking online.

Cost Variation by Region & Facility

• In large metropolitan areas like New York, San Francisco, or Los Angeles, 5x15 units (especially climate-controlled) can range from $150 to $220/month.

• In suburban or rural areas, you may find rates as low as $70 to $100/month for non-climate-controlled units.
• For example, a 5x15 unit in Des Moines, IA, may cost about $95/month for a standard unit and $125/month for climate-controlled.

Want to explore storage prices in more detail? Check out our full guide on how much a self-storage unit really costs  and ways to save.

Tips to Maximize Space in a 5x15 Unit

A 5x15 storage unit gives you 75 square feet of space to work with — but how you use that space makes all the difference. With smart organization and packing, you can fit much more than you might expect.

Stack Strategically

Use sturdy, same-sized boxes to stack items safely and efficiently. Place heavier boxes at the bottom and lighter ones on top to maintain stability.

Use the Full Height

With an 8-foot ceiling, don’t forget to go vertical. Store tall items like mattresses, bookshelves, or dressers upright to conserve floor space.

Disassemble Furniture

Break down furniture like bed frames, tables, and shelves whenever possible. Store the parts vertically or flat to reduce bulk.

Create a Storage Map

Sketch a quick layout or take a photo of your packed unit. It’ll help you remember where everything is — especially if you’ll need access later.

Leave a Walkway

If you’re storing items you’ll need to access occasionally, leave a narrow aisle down the middle of the unit so you don’t have to unpack everything to reach the back.

Use Clear Bins or Label Boxes Clearly

Whether you go with clear storage bins or cardboard boxes, make sure everything is clearly labeled on multiple sides.

According to Public Storage’s 5×15 Storage Unit Size Guide, a 5 × 15 unit measures 75 square feet (5 ft × 15 ft) and—with typical 8-foot ceilings—offers up to 600 cubic feet of storage space. It’s often compared to a large walk-in closet, capable of holding the contents of an entire bedroom with ease.