Storage Unit Cost CAGR Calculator: Annualized Storage Rent Growth
Work out the annualized growth rate of self-storage rent — the recurring cost that compounds quietly while the goods inside the unit depreciate, and that storage operators raise more aggressively than tenants expect.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Annual storage rent growth | Total rent growth |
|---|---|---|
| $120 to $180/mo over 5yr | 8.45% | 50.00% |
| $90 to $130/mo over 4yr | 9.63% | 44.44% |
| $200 to $350/mo over 6yr | 9.78% | 75.00% |
| $75 to $90/mo over 3yr | 6.27% | 20.00% |
How This Calculator Works
Enter the starting and ending monthly storage rent and the years between them. The calculator finds the compound annual growth rate that connects the two figures.
The Formula
Compound Annual Growth Rate
Start is the beginning value, End is the ending value, n is the number of years
Worked Example
Storage rent rising from $120 to $180 a month over 5 years is an 8.4% annual growth rate, total 50%. Self-storage operators are notorious for raising existing-tenant rates well above advertised new-tenant rates — using the friction of moving stored goods to push 8% to 15% annual increases on captive long-term tenants.
Key Insight
Self-storage rate increases exploit a behavioral trap: the hassle of moving goods out exceeds the annoyance of a rate hike, so tenants absorb increases that exceed market rates. Operators routinely raise existing-customer rates 8% to 15% annually while advertising lower rates to new customers — the same unit a new tenant rents for $120 might cost a 3-year tenant $180. The defense: periodically check the facility's advertised new-tenant rate for your unit size and either negotiate or threaten to move. Operators often roll back increases for tenants who push back, because an empty unit earns nothing.
Frequently Asked Questions
How is storage rent CAGR calculated?
(Ending rent / starting rent) ^ (1/years) − 1. From $120 to $180 per month over 5 years is about 8.4% per year.
Why do storage rents rise so fast?
Operators exploit the friction of moving stored goods. Raising an existing tenant's rate 10% rarely triggers a move-out because relocating the contents is a hassle. So operators push 8% to 15% annual increases on long-term tenants while advertising lower rates to new ones.
Can I negotiate a storage rate increase?
Often yes. Check the facility's advertised new-tenant rate for your unit size — if it's lower than your current rate, call and ask for a match or threaten to move. Operators frequently roll back increases for tenants who push back, since an empty unit earns nothing.
When does storage stop making sense?
When cumulative rent exceeds the replacement value of the stored goods. For most household items, the break-even is 12 to 24 months. A rising rent CAGR shortens that further — at 10% annual growth, the math turns against storage faster than the stable-rent assumption suggests.
Should I prepay or lock in a rate?
Some facilities offer rate locks or prepay discounts. Annual prepayment sometimes locks the rate for the year, avoiding mid-year increases. Weigh the prepay discount against the loss of flexibility to move out — and the small risk of the facility changing hands.
Related Calculators
Methodology & Review
The growth rate is the compound annual rate between monthly storage rent at the start and end of the period. Self-storage operators raise existing-tenant rates aggressively (often above advertised new-tenant rates), so realized rent growth for long-term tenants frequently exceeds market averages.
Written by Ugo Candido · Last updated May 17, 2026.