A storage unit looks like the cheaper choice in the first month. At the national average rate, a 10 by 15 unit rents for about $205 a month, and there is nothing to buy. The cost shows up later, one rent increase at a time.
A shed costs more at the start, and then the bill ends. To see when the shed pulls ahead, we compared a typical 10 by 16 shed on Sheds.store with a storage unit of about the same size over five years.
Quick Answer
A shed paid in cash costs less than a storage unit by month 20. A rent-to-own shed costs less from the first month. After five years, the storage unit costs about $16,900, compared with $4,630 for the shed in cash or $9,260 through rent-to-own. For a short-term need of a year or less, storage usually costs less.
The Example
| Shed | Storage unit | |
|---|---|---|
| Size | 10 by 16 (160 square feet) | 10 by 15 (150 square feet) |
| Cost | $4,630 cash price | About $205 a month in rent, plus fees |
| Increases | None | 11.5% a year |
| At the end | You own it | Nothing to keep |
Where the numbers come from:
- Shed price: $4,630 is the median asking price of 85 lofted barn 10 by 16 listings on Sheds.store. Prices vary by style, options, and region, so check listings near you.
- Storage rent: Yardi Matrix reports a national average street rate of $16.39 per square foot per year (September 2026). For 150 square feet, that is 150 times $16.39, divided by 12, or about $205 a month.
- Storage fees: most facilities require a protection plan or proof of insurance and charge a one-time admin fee at move-in. This example uses $24 a month and a $29 admin fee, the typical rates in our True Cost calculator.
- Rent increases: Inside Self Storage reports that facilities often raise rent on existing customers by 8% to 15% at a time. This example uses the midpoint, 11.5% a year.
- Not included: sales tax and delivery.
Five-Year Cost Comparison
| End of | Storage unit | Shed, cash | Shed, rent-to-own |
|---|---|---|---|
| Year 1 | $2,776 | $4,630 | $2,315 |
| Year 2 | $5,805 | $4,630 | $4,630 |
| Year 3 | $9,149 | $4,630 | $6,945 |
| Year 4 | $12,845 | $4,630 | $9,260 |
| Year 5 | $16,933 | $4,630 | $9,260 |
By year five, the storage rent has climbed from $205 to about $317 a month, plus the protection plan, and it keeps going as long as the unit is rented.
Paying Cash: Ahead by Month 20
A cash purchase is the most expensive choice in the first year and the least expensive from then on. Storage costs pass the $4,630 shed price in month 20. Every month after that, the shed owner keeps the money that would have gone to rent.
Some dealers also offer 90 days same as cash, which spreads the payment over three months at no extra cost.
Rent-to-Own: Lower Every Month
With rent-to-own, the dealer divides the cash price by a number called a divider to set the monthly payment. A divider of 24 on a 48-month contract is typical. For a $4,630 shed, that is about $193 a month.
The storage unit costs about $229 a month from the start, counting rent and the protection plan, and the rent goes up every year. The shed payment stays the same, so rent-to-own costs less than storage every month. After month 48, the payments stop and the building is yours.
Rent-to-own does cost more than paying cash. Here, the total is $9,260, twice the cash price. That is the price of no credit check and little or nothing down. Ask the dealer whether paying the contract off early lowers the total. Our guide to how rent-to-own shed agreements work covers the terms to ask about.
When a Storage Unit Makes More Sense
Storage can be the better deal when:
- You only need the space for a year or less, such as during a move or a remodel.
- Your yard has no room for a building, or local rules or your homeowners association do not allow one.
- You are storing items that need climate control.
- You rent your home and the landlord does not allow a building.
Other Costs to Plan For
For a shed:
- Sales tax, unless it is already in the price.
- A level, well-drained spot. Our guide to preparing a foundation for a prefab building explains the options.
- A permit, in some areas, for larger buildings. Check with your local building office.
- Delivery, which many dealers include within a set distance.
For a storage unit:
- A protection plan or insurance, which many facilities require.
- A move-in or admin fee.
- A lock, plus the time and fuel to drive there.
Run Your Own Numbers
Storage rates in your city and the shed you pick will move these numbers. The True Cost calculator compares buying a shed, in cash or through rent-to-own, with renting a storage unit the same size. Enter your own shed price, contract length, and storage quote to see the month your shed pays for itself.
Not sure what size you need? Enter what you plan to store in SpaceFit to see which sizes fit, or read how to choose a portable shed size.
Frequently Asked Questions
How much does a 10 by 15 storage unit cost per month?
At the national average reported by Yardi Matrix in September 2026, about $205 a month in rent, plus a protection plan at many facilities. Rates vary by city, so get a quote from a facility near you.
How often do storage units raise rent?
Many facilities raise rent on existing customers at least once a year, and some more often. Inside Self Storage reports typical increases of 8% to 15% at a time.
Is rent-to-own cheaper than a storage unit?
Over a few years, it often is, because the shed payment stays the same and ends, while storage rent rises and does not end. In the example above, rent-to-own costs less than storage every month.
Can I take a portable shed with me if I move?
Portable buildings are built to be moved. Ask the dealer whether they offer relocation and what it costs.
Compare Sheds Near You
Search sheds for sale by ZIP code to see real prices in your area, or find a dealer near you.
Sources: Yardi Matrix national self storage report, September 2026, via Multi-Housing News and Inside Self Storage on rent increases.