What Size Storage Unit Do I Need?

Size guide by bedroom count. Dimensions, what fits in each unit, climate control requirements, and monthly costs by region.

Updated 2026-09-25

Storage Unit Sizes at a Glance

Standard unit sizes, capacity, and what household they accommodate. Costs are national averages for 2025 to 2026.

Size	Area	Bedroom Equiv.	What Fits	Monthly Cost
5x5	25 sq ft	Closet / seasonal	10-15 boxes, small furniture, seasonal gear	$40 - $80
5x10	50 sq ft	Studio / 1BR partial	Mattress set, dresser, desk, 20+ boxes	$60 - $120
10x10	100 sq ft	1BR to 2BR	Sofa, dining set, queen bed, dresser, 20-30 boxes	$90 - $180
10x15	150 sq ft	2BR to 3BR	Full living room, bedroom set, appliances, 30+ boxes	$120 - $230
10x20	200 sq ft	3BR to 4BR	Full household, multiple bedroom sets, large appliances	$150 - $280
10x25	250 sq ft	4BR+	Large home contents, garage items, vehicles (some)	$180 - $350
10x30	300 sq ft	5BR+ or vehicle storage	Full large home, car, boat, commercial inventory	$200 - $400

Climate Control: When You Need It

Climate-controlled units maintain 55 to 80 degrees Fahrenheit with managed humidity. They cost 25 to 50% more than standard units. Here is what needs climate control and what does not.

Item Category	Needs Climate Control?	Risk Without It
Wood furniture	Yes	Warping, cracking, joint separation from humidity swings
Electronics	Yes	Condensation damages circuits, screens, and drives
Leather goods	Yes	Mold growth, cracking, discoloration
Musical instruments	Yes	Tuning instability, wood damage, string corrosion
Artwork and photographs	Yes	Yellowing, warping, mold, paint cracking
Metal tools and equipment	No (if dry climate)	Rust in humid areas. Consider if humidity exceeds 60%.
Plastic bins, outdoor gear	No	Minimal. UV-stable plastics handle temperature swings.

Monthly Cost by Region

Storage costs vary significantly by metro area. These are average monthly rates for standard (non-climate-controlled) units.

Region	10x10 / month	10x20 / month	Climate Premium
Northeast (NYC, Boston, DC)	$150 - $230	$220 - $380	+30 to 50%
Southeast (Atlanta, Charlotte, Miami)	$90 - $140	$140 - $220	+25 to 40%
West Coast (LA, SF, Seattle)	$140 - $220	$200 - $350	+25 to 40%
Midwest (Chicago, Minneapolis, Columbus)	$80 - $150	$130 - $230	+30 to 45%
Southwest (Phoenix, Dallas, Denver)	$85 - $140	$130 - $220	+25 to 40%

Tips to Reduce Storage Size (and Cost)

Disassemble everything

Remove table legs, bed frames, and shelving. A disassembled bed frame takes up 60% less space than an assembled one. Keep hardware in labeled bags taped to the furniture piece.

Use furniture as storage

Pack linens, towels, and soft items inside dressers, washing machines, and wardrobes. Fill suitcases with clothing. Every cubic foot of air inside furniture is wasted space.

Stack floor to ceiling

Most storage units are 8 feet tall. If you only stack 4 feet high, you are paying for 50% empty space. Use uniform boxes and stack heaviest on the bottom. A well-packed 10x10 holds as much as a poorly packed 10x15.

Sell before storing

A 10x10 unit at $150 per month costs $1,800 per year. If you are storing a $300 couch and a $200 bookshelf, you will spend more on storage in one year than replacing them. Calculate the break-even point before committing.

Self-Storage vs Mover Storage

Cost

30 to 50% cheaper. Month-to-month rates.

Higher cost. Often bundled with moving charges.

Access

24/7 access to your unit. You have the key.

Limited or no direct access. Must schedule with mover.

Best for

Local moves, long-term storage, frequent access needs.

Long-distance moves with staggered delivery dates.

You or your movers load the unit.

The moving company loads items into warehouse vaults.

Insurance

You arrange separate storage insurance.

May be covered under your moving valuation.

Frequently Asked Questions

What size storage unit do I need for a 2-bedroom apartment?+

A 10x10 unit (100 sq ft, approximately 800 cubic feet) fits a typical 2-bedroom apartment. That includes a sofa, dining set, queen bed, dresser, desk, 15 to 20 boxes, and small appliances. If you have bulky items like a sectional sofa, exercise equipment, or a piano, go up to a 10x15. If you are storing only part of your apartment (seasonal items, extra furniture), a 5x10 may be sufficient.

How much does a 10x10 storage unit cost per month?+

A 10x10 unit costs $90 to $180 per month depending on location. Northeast metro areas (NYC, Boston, DC) average $150 to $230. Southeast cities (Atlanta, Charlotte) average $90 to $140. West Coast (LA, SF, Seattle) averages $140 to $220. Midwest (Chicago, Minneapolis) averages $80 to $150. Climate-controlled units add 25 to 50% to the base price. First-month discounts of 50% are common at national chains.

Do I need a climate-controlled storage unit?+

You need climate control if you are storing wood furniture (warping and cracking from humidity changes), electronics (condensation damages circuits), leather goods (mold and cracking), musical instruments, artwork, photographs, wine, or documents. Climate control keeps the unit between 55 and 80 degrees Fahrenheit with managed humidity. If your area has extreme summer heat (above 95F), extreme winter cold (below 20F), or high humidity (above 70%), climate control prevents damage to most items.

Is it cheaper to rent a bigger unit or two smaller ones?+

One bigger unit is almost always cheaper. A 10x20 unit costs $150 to $280 per month, while two 10x10 units would cost $180 to $360. Beyond the cost, a single unit is more convenient for access and organization. The only reason to rent two units is if you need separate access for different people or if you need one climate-controlled unit for sensitive items and one standard unit for durable goods.

How do I maximize space inside a storage unit?+

Disassemble furniture (remove table legs, bed frames). Stand sofas on end. Stack boxes with heaviest on the bottom. Use the inside of dressers, appliances, and wardrobes for small items and linens. Create a center aisle for access to the back. Place items you will need first near the door. Use uniform-sized boxes (they stack better than mismatched sizes). Fill the unit from floor to ceiling, wall to wall. A well-packed 10x10 holds 30 to 40% more than a loosely packed one.

What is the difference between self-storage and mover storage?+

Self-storage means you rent a unit at a storage facility, and you (or your movers) load it. You have 24/7 access and month-to-month terms. Mover storage (also called storage-in-transit or warehouse storage) means the moving company stores your items in their warehouse, typically in wooden vaults. Mover storage is useful during long-distance moves with staggered dates. Self-storage is usually 30 to 50% cheaper and gives you direct access to your belongings.

Should I get storage insurance?+

Yes. Most storage facilities do not cover your items under their insurance. Your homeowner's or renter's insurance policy may cover stored items, but check the off-premises coverage limits and any exclusions. If your existing policy does not cover storage, buy a storage insurance policy from the facility ($8 to $25 per month for $2,000 to $10,000 in coverage) or a standalone policy from a company like MiniCo or Deans and Homer.