How do I use the Self-Storage Facility Underwriting & Development Pro Forma Calculator?

Enter your specific project or financial parameters into the input fields above. The engine recalculates outputs dynamically in real time and updates visual charts and summary metrics.

Can I export and share these results?

Yes, you can generate shareable state links, export clean CSV spreadsheets, or print high-resolution executive reports with a single click.

Is this calculator free to use?

Yes, all calculation engines on ToolsVault are 100% free with no account registration or paywall required.

Commercial Real Estate Pro Forma

Self-Storage Facility Underwriting & Feasibility Calculator

Underwrite ground-up development or value-add acquisition of mini storage facilities. Calculate Net Rentable Square Footage (NRSF), stabilization ramp, and debt service coverage (DSCR).

Facility Scope & Unit Economics

Total Net Rentable Sq Ft (NRSF)

Average Rent ($/sqft/mo)

Stabilized Occupancy (%)

Total Development/Acq Cost ($)

Operating Expense Ratio (%)

Market Exit Cap Rate (%)

Annual Debt Service ($/yr)

Underwriting Metrics & Valuation

Effective Gross Income (EGI)

Net revenue after economic vacancy

$704,700/yr

Net Operating Income (NOI)

After 35% management, tax & marketing

$458,055/yr

Stabilized Valuation @ Market Cap

NOI / Exit Cap Rate (6.25%)

$7,328,880

DSCR & Value Creation Spread

Lender coverage & Built Equity

1.73x DSCR

+$2.53M Equity

Rule of thumb: Breakeven physical occupancy on self-storage is typically 60-65% with conventional 65% LTV debt.

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