How to Value a Self-Storage Facility Before You Buy

The asking price on a self-storage listing usually comes from the seller's view of net operating income and a cap rate the broker hopes a buyer will accept. Your job is to rebuild both numbers from scratch. Here's a step-by-step method to value a facility, with an example that shows how quickly a "great deal" can turn into an overpriced one.

The valuation formula

Value = Net operating income (NOI) ÷ Capitalization rate

• NOI is income after operating expenses, before debt service, depreciation, and income taxes.
• Cap rate reflects what buyers are paying for similar facilities in similar markets.

Small changes matter. On $200,000 of NOI, a 6% cap rate implies $3.33 million; a 7% cap rate implies $2.86 million. A half-point disagreement is worth hundreds of thousands of dollars.

Step 1: Audit the income

Request:

• ☐ A current rent roll: every unit, size, type, tenant, move-in date, current rent, and paid-through date.
• ☐ Monthly occupancy (physical and economic) for 24–36 months.
• ☐ Delinquency reports (30, 60, 90+ days).
• ☐ Operating statements for 2–3 years.
• ☐ Bank statements for 12–24 months.
• ☐ Ancillary income detail: tenant protection, fees, merchandise, truck rental commissions.

Then:

1. Match deposits to reported income. If the bank statements show less than the profit and loss statement, trust the bank.
2. Separate recurring from one-time income. A big auction month or a one-off parking contract isn't recurring.
3. Check delinquency. Tenants months behind may never pay; don't count their rent.
4. Do a lock check during due diligence: walk every unit and confirm occupied units match the rent roll.

Step 2: Rebuild the expenses

Total operating expenses for smaller facilities often land in the 35–45% range of effective gross income once everything is included.

Step 3: Calculate your NOI

Worked example

A 300-unit facility is listed at $3,400,000, based on the seller's NOI of $220,000 at a 6.5% cap rate.

Your NOI is about one-third lower than the seller's, almost entirely because of payroll and taxes.

Step 4: Choose the right cap rate

Cap rates depend on:

• Quality and age: newer, climate-controlled, well-located facilities command lower cap rates.
• Size: larger facilities attract institutional buyers and lower cap rates.
• Market: primary metros usually trade at lower cap rates than rural towns.
• Interest rates: higher borrowing costs push cap rates up.
• Competition and supply pipeline.

Recent industry valuation reports have shown class-A facilities around 5.0–5.5%, class-B around 5.75–6.5%, and class-C around 6.75–8.0% (as of 2026, verify). Ask local brokers for recent sales of comparable facilities and use those.

Applying 6.5% to your $149,000 NOI: $149,000 ÷ 0.065 ≈ $2,290,000, more than $1 million below the asking price.

Step 5: Test the lender's DSCR

Lenders typically want a debt service coverage ratio (NOI ÷ annual debt service) of about 1.20–1.35 for storage.

At 7.25% interest and 25-year amortization, a 1.25 DSCR on $149,000 of NOI supports annual debt service of about $119,000, or a loan of roughly $1,375,000. If you offered $2,300,000, you'd need about $925,000 of equity before closing costs. Many buyers discover at this step that the deal only works with a lower price, seller financing, or more cash.

Step 6: Price the upside carefully

Value-add opportunities can justify buying a facility, but you shouldn't pay the seller for improvements you'll make.

If your plan lifts NOI from $149,000 to $210,000 in three years, the stabilized value at 6.5% would be about $3.2 million. That gap is your reward for the work and risk. Pay closer to today's value.

Red flags that should lower your offer

• Occupancy that jumped just before the sale with heavy move-in specials: rents may be temporarily discounted.
• High delinquency or many units in overlock with no lien sales: collections have been neglected, and some "occupied" units aren't really paying.
• Rent roll units that don't match the physical count: missing records or unrented units listed as occupied.
• No online presence or poor reviews: fixable, but it will take time and money.
• Deferred maintenance: failing roofs, rusted doors, broken gates, or crumbling paving.
• A new competitor approved nearby: future rate pressure.
• Seller unwilling to share bank statements: a sign the income can't be verified.

Each of these doesn't necessarily kill a deal, but each one should show up in either your NOI, your cap rate, or your repair budget.

Due diligence checklist

• ☐ Rent roll audited against deposits and a physical lock check.
• ☐ Property taxes re-estimated; insurance quoted.
• ☐ Physical inspection: roofs, doors, gates, paving, drainage, lighting, HVAC.
• ☐ Phase I environmental site assessment.
• ☐ Survey and title review.
• ☐ Zoning confirmation, including expansion potential.
• ☐ Planning department check for new competitors.
• ☐ Review of rental agreement and lien practices against your state statute.
• ☐ Software data transfer confirmed.

Your next step

Ask a broker for a storage listing's rent roll and three years of statements. Rebuild expenses using the table above, calculate NOI, apply a cap rate from recent local sales, and test the DSCR. Compare your value with the asking price before you write a letter of intent.

The full guide, Starting or Buying a Self-Storage Business, covers feasibility, valuation, due diligence, development budgets, SBA and bank financing, lien laws, tenant protection, pricing, operations, and marketing, with checklists and a 30/60/90-day plan, for $0.99.