Calculate the cap rate and value of a self-storage facility. Model occupancy, rate per square foot, and NOI to evaluate storage investment deals.
Self-storage is one of the highest-yielding sectors in commercial real estate, offering cap rates of 5–10% depending on location, facility quality, and occupancy. Valuation follows the same income approach as other commercial properties: Value = NOI / Cap Rate. But the income calculation has unique inputs: total rentable square footage, average rate per square foot, and facility-wide occupancy rate.
This calculator models the revenue side using square footage and rate data, subtracts operating expenses, and computes the NOI, cap rate, and property value. It's designed specifically for self-storage investors evaluating acquisition opportunities or monitoring existing facility performance.
Self-storage facilities benefit from low operating costs (no plumbing in units, minimal staffing, low maintenance), high fragmentation (most facilities are mom-and-pop owned, creating acquisition opportunities), and recession resilience (people need storage in both good and bad economies).
Homebuyers, investors, and real-estate professionals all benefit from precise self-storage cap rate figures when evaluating properties, negotiating deals, or planning long-term investment strategies. Save this calculator and revisit it whenever market conditions or your financial situation changes.
Self-storage valuation requires understanding of per-square-foot pricing, occupancy dynamics, and expense ratios unique to the asset class. This calculator is tailored to storage-specific inputs so you can quickly evaluate deals and compare them to market benchmarks. Instant recalculation lets you compare scenarios side by side, so every buying, selling, or investment decision is grounded in solid financial analysis.
Gross Potential Revenue = Total Sq Ft × Rate per Sq Ft Effective Revenue = GPR × Occupancy Rate NOI = Effective Revenue − Operating Expenses Cap Rate = NOI / Purchase Price × 100 Value = NOI / Cap Rate
Result: NOI = $348,000 | Cap rate = 12.4%
Gross potential: 50,000 sqft × $12/sqft = $600,000. At 88% occupancy: $528,000 effective revenue. NOI = $528,000 − $180,000 = $348,000. Cap rate = $348,000 / $2,800,000 = 12.4%. This is a strong cap rate, suggesting either a value opportunity or a lower-tier market.
Self-storage is valued using the income approach: NOI / Cap Rate. The revenue model is straightforward: total rentable square footage multiplied by rate per square foot multiplied by occupancy. The simplicity of the income model makes it easy to underwrite deals and model value-add scenarios.
Beyond cap rate, self-storage investors track revenue per square foot (the primary performance metric), economic occupancy (more accurate than physical occupancy), expense ratio (lower is better, target under 40%), and street rates vs. existing tenant rates (indicating rate growth potential).
The most common value-add approach is acquiring under-managed facilities with below-market rates and low occupancy, implementing professional management, raising rates to market, and improving marketing. Rate increases of $0.25–$1.00 per square foot across a 50,000 sqft facility add $12,500–$50,000 in annual revenue, translating to $175,000–$700,000+ in value.
Self-storage cap rates range from 5–6% for institutional-quality facilities in strong markets to 8–10% for smaller facilities in secondary markets. Facilities with value-add potential (low occupancy, below-market rates) may trade at higher cap rates with the expectation of NOI growth.
Revenue is based on total rentable square footage multiplied by the average rate per square foot per year. Factor in occupancy (typically 85–90% for stabilized facilities) and ancillary income (late fees, insurance, retail sales) to get total effective revenue.
Operating expenses include property taxes, insurance, management (on-site or remote), marketing, utilities, repairs, and maintenance. Total expenses typically run 30–45% of effective gross income, significantly lower than apartments because storage units require minimal maintenance.
During recessions, people downsize homes and need storage. During booms, people accumulate more stuff and need storage. Life events that drive demand (moving, divorce, death, renovation) happen in all economic conditions. Historically, self-storage has had the lowest default rate of all commercial property types.
Physical occupancy is the percentage of units rented. Economic occupancy is actual revenue collected divided by gross potential revenue. Economic occupancy is always lower because of discounts, free months, and delinquency. Always evaluate deals based on economic occupancy.
Raise rates for existing tenants (storage tenants are sticky and rarely move out over modest increases), improve marketing to boost occupancy, add climate-controlled units, implement online rental and automated access, and reduce expenses through operational efficiency. Consult a professional for advice tailored to your specific situation.