6 Numbers That Tell You Whether Your Self-Storage Facility Is Actually Working
Sam's List Editorial | 2026-07-28
6 Numbers That Tell You Whether Your Self-Storage Facility Is Actually Working A self-storage facility can be 92 percent full and still be a mediocre business. That is the part nobody tells first-time owners. Occupancy is the number everyone quotes at the closing table, and it is the least useful of the self storage metrics that matter. Units can be occupied by tenants paying a promotional rate from eighteen months ago, by tenants who have not paid in sixty days, or by your cousin storing a boat. All three count as occupied. Here are the six numbers that tell you whether the facility works, and what each one is hiding when you only look at the headline. 1. Economic Occupancy, Not Physical Occupancy Physical occupancy is units rented divided by units available. Economic occupancy is rent actually collected divided by rent you would collect if every unit were full at your current asking rate. The gap between them is the single most diagnostic number in self-storage. Take a facility at 92 percent physical occupancy where collected rent comes to 74 percent of gross potential. That 18-point spread is concessions, legacy rates, delinquency, and free months, and it is worth more than the marketing budget you were about to increase. The limitation is that economic occupancy moves for good reasons too. A facility in lease-up should have a wide spread, because that is what a first-month-free promotion is for. The number is only meaningful against your own trend line and your own competitive set, not against a benchmark you read somewhere. 2. Rate Per Occupied Square Foot Street rate is what you advertise. Rate per occupied square foot is what you get. Divide total monthly rental revenue by occupied square footage and you have the number your lender actually cares about. Owners consistently overestimate this figure, and the reason is that street rates get updated and legacy tenants do not. A tenant who moved in during a soft quarter three years ago at 78 dollars is still paying something close to 78 dollars while your website quotes 129. Every one of those tenants looks identical on the occupancy report. Track it by unit type as well as in aggregate. Facilities routinely make money on 10x10 units and quietly lose it on the small climate-controlled inventory nobody wants, and the blended number hides both. 3. Existing Customer Rate Increases and the Churn They Buy The standard lever in this industry is raising rates on tenants already in place. It works because moving a storage unit is genuinely annoying, so a meaningful share of tenants absorb an increase rather...
