People usually end up comparing these two because the monthly numbers land in the same neighborhood. They are not the same deal, though, and the difference is not really about the money.
A storage unit is rent. You pay every month for as long as you need it, and at the end of five years you own nothing and the unit is still the storage company's. Rent-to-own on a building is also monthly — but at the end of the term the building is yours, and it has been sitting in your own backyard the whole time.
There is also the part nobody thinks about until they live it: a storage unit has access hours, and it is somewhere else. You drive to it. You cannot run out at 9pm because you need the drill. A building in your yard is open every hour of every day and the drive is thirty feet.
We are not going to quote you what a storage unit costs, because rates vary by town and they change. Look up what a 10x10 unit rents for near you — then put it next to these, which are real buildings on our lot today:
| Building | Sq ft | 48 mo payment | Yours after |
|---|---|---|---|
| Economy Utility - 8x12 | 8x12 | $95.28/mo | 48 months |
| Lofted Barn - 8x12 | 8x12 | $138.92/mo | 48 months |
| Animal Shelter - 10x10 | 10x10 | $142.67/mo | 48 months |
| Lofted Barn - 10x12 | 10x12 | $155.80/mo | 48 months |
| Utility - 10x16 | 10x16 | $160.18/mo | 48 months |
| Utility - 10x16 | 10x16 | $180.00/mo | 48 months |
| Lofted Barn - 10x16 | 10x16 | $181.36/mo | 48 months |
| Lofted Barn - 10x16 | 10x16 | $184.94/mo | 48 months |
Payments are per month plus tax, with a 5% deposit and no credit check. Full table with 36, 48 and 60-month terms.
Two more things to put in the comparison while you are at it: unit rent generally goes up over time, and your rent-to-own payment does not. And most units are climate-neutral concrete boxes — a 10x16 building is 160 square feet, which is larger than a 10x10 unit to begin with.
We would rather you get this right than get a sale. A unit makes more sense if you are between houses, if you are renting and cannot put a building on the property, if the stuff is going away in a few months, or if you genuinely do not have a spot with access for a delivery. Those are real situations and a shed is the wrong tool for them.
If the storage is ongoing — mower, tools, seasonal stuff, overflow that is never actually leaving — then you are renting a box forever for things that are never going to move out of it. That is the case where the math stops being close.
No credit check and no application, so there is nothing to be turned down for. A deposit of 5% of the building price plus the first month gets it delivered and set up free within 30 miles. Pick 36, 48 or 60 months. Pay it off early and you get a discount; pay it inside 90 days and you pay the cash price and nothing more. Need out at any point? Turn the building in — nothing is reported to the credit bureaus, so there is no damage either way.