The 15-Minute Self-Storage Deal Screen: What to Check Before You Underwrite

Sep 25

3 min read

Self-storage investors can spend hours underwriting a property only to discover that the deal never made sense in the first place. Before building a detailed financial model, perform a quick initial screen to determine whether the opportunity deserves more of your time.

Here are six things you can evaluate in about 15 minutes.

1. Start With the Current NOI

Look at the property's trailing financials and determine the actual Net Operating Income—not simply the seller's projected NOI.

Pay attention to expenses that appear unusually low, missing management fees, property taxes that may reset after a sale, and income that isn't supported by the rent roll.

Your initial question is simple: What am I actually buying today?

2. Compare the Asking Price to Current Performance

Divide the current NOI by the asking price to determine the going-in cap rate.

Don't stop there. Consider whether the return makes sense given the property's location, condition, financing costs, and risk. A low cap rate may be justified for a high-quality asset, while a property requiring significant improvements should generally provide enough potential return to compensate for the additional risk.

3. Check Physical AND Economic Occupancy

A facility that's 90% physically occupied isn't necessarily performing at 90%.

Discounts, delinquent tenants, concessions, and below-market rents can create a significant difference between physical and economic occupancy.

That gap can reveal either a problem—or an opportunity.

4. Compare Existing Rents to the Market

Quickly check what nearby competitors are charging for comparable unit sizes.

If the subject property is significantly below market, there may be revenue upside. If your underwriting requires rents substantially above established competitors to make the deal work, however, your assumptions may be too aggressive.

Underwrite the market you have—not the market you hope will exist.

5. Identify the Value-Add Story

Before spending hours analyzing a property, you should be able to explain in one or two sentences how you plan to create value.

Maybe you can increase occupancy, adjust below-market rents, reduce unnecessary expenses, add tenant insurance, improve management, expand onto excess land, or add RV and boat parking.

If the deal only works because you assume everything goes perfectly, take another look.

6. Estimate the Big Capital Expenses

You don't need a full property inspection during your initial screen, but look for obvious future costs.

Consider the condition of the:

Roofs
Paving and drainage
Gates and fencing
Security systems
HVAC systems on climate-controlled buildings
Unit doors

A seemingly attractive purchase price can quickly become less attractive when substantial capital expenditures are required immediately after closing.

The 15-Minute Decision

At the end of your initial review, you don't need to know exactly what the property is worth.

You need to answer one question:

Does this opportunity deserve another several hours of my time?

If the current income supports the valuation, the market fundamentals make sense, the risks are manageable, and you can clearly identify a realistic path to creating value, then move into deeper underwriting.

If the numbers only work with aggressive assumptions—or the seller's expectations are disconnected from the property's performance—don't be afraid to move on.

Successful investors don't just know how to find deals. They know which deals deserve their time.