Self Storage Cost Calculator (2026)

Calculate the true cost of self storage including rent, insurance, admin fees, and projected rate increases. Most calculators only show the advertised rate. This one shows what you will actually pay.

Your Storage Details

State

Unit Size

Storage Duration: 6 months

1 month24 months

Climate Control (+30%)

Your True Cost Estimate

Advertised monthly rate

$95/mo

True average monthly cost

$123/mo

Total cost for 6 months

$739

Cost Breakdown

Monthly rent (before increase)$95

Monthly insurance$15

Admin fee (one-time)$25

Lock (one-time)$12

Rate increase (month 4+)+15%

Rate increase notice: Most facilities increase rates 15% after month 3. Your estimated rent goes from $95/mo to $109/mo starting month 4. This is factored into your total cost above.

How We Calculate

Base pricing

Average 10x10 unit cost by state from facility surveys and public pricing data. Updated April 2026.

Size adjustment

Prices scaled proportionally by unit size. Larger units cost more but offer better value per square foot.

Climate premium

30% premium applied when climate control is selected, based on national average climate-control markup.

Rate increases

15% increase modelled at month 4, based on the most common rate increase pattern at national chains.

This calculator provides estimates based on national averages. Actual prices vary by facility, location within a city, and current promotions. Always get quotes from specific facilities before committing.

Frequently Asked Questions

How accurate is this calculator?+

This calculator uses state-level averages from facility surveys and public data. Individual facility prices can vary 20-40% from these averages depending on specific location, available promotions, and facility type. Use this as a budgeting starting point and get actual quotes from facilities in your area.

Where does the data come from?+

Pricing data is compiled from publicly listed rates at major storage chains, aggregator platforms, and independent facility surveys. Data is updated quarterly. The rate increase model is based on reported customer experiences across major chains.

Should I still get quotes from facilities?+

Absolutely. This calculator gives you a realistic baseline so you know what to expect and can identify if a facility is overcharging. But actual quotes will reflect local conditions, current promotions, and specific facility pricing that national averages cannot capture.

Why does the true cost differ from the advertised rate?+

The advertised rate only includes base rent. Facilities add mandatory insurance ($10-$20/month), admin fees ($15-$30 one-time), lock purchases ($10-$15), and rate increases after the promotional period (typically 15% after 3-6 months). Our calculator factors all of these in.