If you are looking at buying or building a self-storage facility, you are probably asking a simple question: “Will this deal actually make money?” That’s where self storage underwriting comes in.
That is what underwriting is all about.
Underwriting may sound complicated, but it’s really just the process of looking at a property and figuring out whether it’s a smart investment. Think of it like checking the rules, the numbers, and the risks before you decide to jump into a swimming pool. You want to know how deep it is before you dive in.
In self-storage, underwriting helps you understand whether a facility can earn enough income, to cover costs, pay back any debt, and still leave enough profit. It also helps lenders decide whether they feel safe giving you a loan.
StorSuite’s investment team has broken down the details so that you have a better understanding of the self storage facility underwriting process and what’s needed to get you to the finish line. Read below to learn all things underwriting, and then use this information to help make the right investment decision for you.
What is Self Storage Underwriting?
Underwriting is the process of studying a self-storage deal before you buy, build, or finance it.
When you underwrite a self-storage property, you’re trying to answer questions like:
- How much money will this facility bring in?
- How much will it cost to run?
- Is the market strong enough to support it?
- Can the property support a loan?
- Will you earn a return that makes the deal worth doing?
In plain English, underwriting means looking at the numbers before you make the leap.
For a self-storage facility, that means you are not just looking at a building. You are looking at a business. You are studying occupancy, rental rates, unit mix, operating expenses, market demand, competition, and future growth potential.
Why Self-Storage Underwriting Matters
Self-storage can be an attractive investment because it often has lower operating costs than other commercial real estate types, and it can provide a stable cash flow. But that doesn’t mean every deal is a good one. A facility can look great from the outside and still be a weak investment.
Maybe the occupancy is low. Maybe the rental rates are below market. Maybe the area already has too much storage. Maybe the expenses are higher than they should be.
Underwriting helps you catch those problems early.
It also helps you spot the upside. Sometimes a facility is underperforming because it has poor management, outdated pricing, weak marketing, or too many vacant units. A smart operator sees this as an opportunity. Good underwriting helps you tell the difference between a bad deal and a fixable one.
What Three Decision-Makers Are Looking at the Deal
When you underwrite a self-storage facility, it helps to understand that three different groups are judging the same deal in three different ways:
- Operators
- Lenders
- Investors
They’re all looking at the same property, but each one cares about something a little different.
Let’s look at each angle.
1. The Operator’s View: “Can I Create Enough Value to Make This Work?”
If you’re the operator, your job is to make the self-storage facility perform better and become more valuable over time.
You’re asking questions like:
- Can you raise occupancy?
- Can you improve rental rates?
- Can you cut unnecessary expenses?
- Can you add better technology or management systems?
- Can you increase the overall value of the property enough to make a profit?
Think of the operator like someone buying an old bike at a garage sale. You don’t just want to own the bike. You want to clean it up, fix the tires, maybe add a basket, and then have something worth more than what you paid.
What Operators Look at During Self Storage Underwriting
Occupancy
Occupancy tells you how full the facility is.
If a self-storage facility has 100 units and 85 are rented, it has 85% occupancy. That matters because empty units do not pay rent.
Operators want to know:
- Is occupancy already strong?
Is it weak because of bad management?
Is there room to lease up vacant units and increase income?
Rental Rates
This tells you how much tenants are paying for units.
Operators compare the facility’s current rental rates to nearby competitors. If the subject property is charging less than similar facilities in the market, that may be a chance to increase revenue.
For example, if competitors are charging $120 for a 10×10 unit and this facility is charging only $95, you may have room to grow income over time.
Unit Mix
Not every unit rents the same way.
A facility might have:
- 5×5 units
- 10×10 units
- 10×20 units
- Climate-controlled units
- Drive-up units
- RV or boat storage
Operators underwrite the unit mix to see whether the facility has the kinds of units customers in that market actually want.
Expenses
You also have to know how much it costs to run the property.
This includes things like:
- Property taxes
- Insurance
- Payroll
- Utilities
- Repairs and maintenance
- Marketing
- Software
- Security
- Management fees
A facility can bring in strong revenue but not make money if the expenses are out of control.
Value-Add Potential
Operators are always looking for ways to create more value.
That could mean:
- Raising rents closer to market
- Improving online leasing
- Automating the facility
- Adding tenant protection plans
- Increasing marketing
- Upgrading security
- Converting unused space into rentable units
- Expanding the site with additional buildings
From the operator’s angle, underwriting is about asking:
“Can I make this property better and more profitable than it is today?”
2. The Lender’s View: “Can This Borrower Pay Back the Loan?”
Now let’s switch perspectives.
If you are the lender, you are not mainly focused on upside. You are focused on safety.
You want to know whether the property produces enough income for the borrower to make the loan payments on time.
Think of a lender like someone lending their car to a friend. Before handing it over, they want to feel pretty sure they’ll get it back in one piece.
What Lenders Look at During Underwriting
Net Operating Income (NOI)
NOI is one of the most important numbers in self-storage underwriting.
It is the income left over after you subtract operating expenses from revenue, but before loan payments and income taxes.
Here is the easy version:
Revenue – Operating Expenses = NOI
If a self-storage facility brings in $500,000 per year and costs $200,000 per year to operate, the NOI is $300,000.
NOI helps show whether the property can support debt.
Debt Service Coverage Ratio (DSCR)
This is a fancy phrase for a very simple idea:
Does the property make enough money to comfortably pay the loan?
If the annual loan payments are $200,000 and the NOI is $300,000, the property has a cushion.
If the property barely makes enough to cover the debt, the lender may see the loan as too risky.
Loan-to-Value (LTV)
LTV compares the size of the loan to the value of the property.
If a property is worth $10 million and the loan is $7 million, the LTV is 70%.
Lenders use this to protect themselves. The lower the LTV, the more safety they usually have.
Borrower Strength
Lenders do not only underwrite the property. They also underwrite the person or company borrowing the money.
They want to know:
Do you have experience?
Do you have enough cash reserves?
Do you have a solid business plan?
Have you successfully operated self-storage before?
From the lender’s angle, underwriting is about asking:
“If we make this loan, how likely are we to get paid back?”
3. The Investor’s View: “Is the Return Worth the Risk?”
Now let’s look at the third angle.
If you’re an investor, you want your money to grow.
You’re asking whether the returns from this self-storage deal are strong enough compared to the risk. You want the reward to be worth the wait.
What Investors Look at During Underwriting
Cash Flow
Cash flow is the money left after all the bills are paid, including operating expenses and debt payments.
Investors want to know:
- Will this facility produce steady income?
- How soon?
- How reliable is that income?
Return on Investment
Investors usually want to see whether the expected return is competitive.
That means they are comparing this deal to other places they could put their money.
If self-storage is riskier, more complicated, or slower to pay off than other opportunities, they will want higher returns to make it worthwhile.
Hold Period
Some investors are fine waiting five to seven years for a bigger payoff. Others want to see income sooner.
Underwriting helps show how long it may take to stabilize the facility, grow NOI, and create an exit opportunity.
Exit Value
Investors want to know what the property could be worth in the future.
If you increase occupancy, raise rates, and improve operations, the property may be worth much more when you sell or refinance it later.
That future value is a big part of why investors care so much about good underwriting.
From the investor’s angle, underwriting is about asking:
“Will I earn a strong enough return for the risk I’m taking?”
A Simple Way to Think About It
Here is the easiest way to remember self-storage underwriting:
- Operators ask: “Can I improve this property enough to make money?”
- Lenders ask: “Can this deal safely repay the loan?”
- Investors ask: “Will the return be worth the risk?”
A deal that excites an operator but scares a lender may not get financed. A deal that works for a lender but offers weak returns may not attract investors. A deal with strong investor returns but unrealistic assumptions may fall apart.
The best self-storage deals are the ones where all three viewpoints make sense.
Conclusion
Self-storage underwriting is really just the art of looking before you leap. It helps you figure out whether a facility can make money, support debt, and deliver a return worth chasing.
Operators want to see value they can create.
Lenders want to see loans that can be repaid safely.
Investors want to see strong returns that justify the risk.
The numbers matter, but the real goal of underwriting is not to make a spreadsheet look nice. It’s to help you make better decisions with your money.
