The pitch deck for the facility you’re looking at says 6.5% going-in cap rate.
Your broker is telling you that’s a fair number for 2026. The seller’s accountant has already prepared a stabilized pro forma showing 7.2% by year three. Comps in the metro are trading at 6.0–6.4%. On paper, you’re getting a deal.
This is the moment most independent operators get cooked.
Because that 6.5% is not the number you actually pencil. It’s the number the seller wants you to anchor on. The number you actually pencil — the one your lender’s underwriter is going to mark down to, the one your CPA is going to flag at year-end, the one you’re going to wake up at 3 a.m. thinking about in 2027 — is closer to 5.0–5.4% by the time everything that should sit in opex actually sits in opex.
That gap is what this Friday Deep is about. Five numbers, three red flags, one calculator at the bottom you can use to stress-test your own next deal in about 90 seconds.
Why ‘going-in cap rate’ lies to you
Brokers compute cap rate as NOI ÷ purchase price. Sounds simple. The problem is which costs you exclude from NOI before you divide.
The seller’s pro forma almost always strips three things out:
A market-rate property management fee. If the seller is owner-operating, they pay themselves $0 for management. The pro forma shows zero management line. You, the buyer, will not be on-site every day. Either you hire someone (third-party fee is 6–8% of effective gross income), or you self-manage and account for your own time honestly. Either way, that’s $20K–$40K/year that wasn’t in the seller’s NOI.
Realistic R&M. Sellers tend to defer maintenance in the 12–18 months before a sale. The R&M line on a pro forma shows what they spent — not what the next operator needs to spend. As a rule, double the seller’s R&M number for a facility built before 2010, and add a 5% contingency to anything else.
Owner-as-employee labor. Mom-and-pop facilities often have the owner running the office, doing the landscaping, fixing locks, answering the phone at 9 p.m. None of that hits the seller’s income statement. All of it has a market price.
When you re-add those three lines to the pro forma, the 6.5% headline cap becomes a 5.2% true cap. And a 5.2% cap rate at 7% debt is a deal that does not pencil. We’ll get to the math.
The five numbers that actually matter
If you can only check five numbers before you write an offer, check these. In order of how badly they kill deals when they’re wrong.
True NOI (not pro forma NOI)
Take the seller’s NOI and subtract a 6% property management fee on EGI (even if you self-manage), a 50% R&M uplift if the facility is older than 15 years, an owner-labor adjustment ($35K–$60K depending on facility size, if it was owner-operated), and a 3% capex reserve on EGI.
That number — call it your defensive NOI — is what you should divide into purchase price. If the resulting cap rate is below your hurdle, walk. The seller’s pro forma is irrelevant; you’re not buying their facility, you’re buying yours.
DSCR — and what your lender will actually require
Debt Service Coverage Ratio is NOI ÷ annual debt service. Lenders want to see it above 1.25x. Many storage lenders are now demanding 1.30x or 1.35x in 2026. Below 1.20x and you can’t get the loan from a regional bank; you’re pushed into private debt at 9–11%, which kills the deal a different way.
The trap: when you compute DSCR, use defensive NOI (the one you computed above), not the seller’s pro forma NOI. Too many operators have walked into a closing thinking they had a 1.30x deal, only to have the lender’s appraiser strip out the same lines we just discussed and downgrade them to 1.10x — at which point the loan terms get re-traded and the deal economics fall apart.
A defensive DSCR of 1.25x going in is the floor. Anything tighter and you’re banking on flawless execution from day one.
Breakeven occupancy
This is the occupancy at which your cash flow goes to zero. Formula: (operating expenses + debt service) ÷ gross potential rental revenue.
In a healthy 2026 deal, breakeven sits at 75–82%. Above 85% breakeven and you’re depending on holding stabilized occupancy through every economic cycle for the entire amortization period. That’s a bad bet. Storage occupancies in tier-2 metros routinely drop into the high 70s during recessions; in tier-3 metros, into the high 60s.
If your breakeven is 88% and your market’s recession-low is 76%, you don’t have a deal — you have a future bankruptcy filing on a timer.
Year-1 cash-on-cash return
Cash flow after debt service, divided by total equity invested (down payment + closing costs + initial capex).
Year-1 cash-on-cash for storage in 2026 is averaging 3–6% on deals that pencil. Below 3% and the deal is essentially appreciation-only — fine for a REIT with infinite holding period, dangerous for an independent who may need cash flow to service personal obligations. Above 7% on a clean deal is now rare; if you see it, look harder for what’s wrong.
The cap-rate spread vs. your cost of debt
This is the test the trade press never frames clearly. Going-in cap rate minus your effective cost of debt = your levered spread.
If you’re buying at a 6.5% cap and your debt is at 7.0%, your spread is negative 0.5%. That means each dollar of debt is destroying value, not creating it. The only way the deal works is via NOI growth (rent increases > expense increases) compounding over the hold.
In storage in 2026, with rent growth running 3–4% and expense inflation running 4–5%, even achieving NOI growth requires aggressive ECRI execution. A negative going-in spread is not automatically fatal — but it means you’re betting on operational execution to bail out the financing structure. That’s a leverage bet on your own competence. Sometimes worth it. Often not.
A worked example: the deal that just barely pencils
Let’s underwrite a real-shape deal. A 35,000-square-foot facility in a tier-2 metro, on the market for $4.5M.
Seller’s pro forma NOI: $315K. Implied cap rate (seller’s framing): 7.0%. You’re already excited.
Now you re-underwrite defensively. EGI stays at $455K either way. But OpEx (excluding management) climbs from the seller’s $108K to a defensive $135K once you add the R&M uplift and contingency, and a 6% management fee adds another $27K that the owner-operator showed as $0. Net result: defensive NOI lands at $293K — $54K below what even the seller’s already-defensive $315K figure showed.
Defensive cap rate: $293K ÷ $4.5M = 6.5%. Still acceptable, not a steal.
Debt at 65% LTV ($2.925M), 7.0% rate, 25-year amort: annual debt service ≈ $248K.
Defensive DSCR: $293K ÷ $248K = 1.18x. Below the 1.25x lender threshold.
This is the moment the calculator earns its keep. You have three live decisions.
Negotiate the price down. At a $4.0M price, defensive NOI of $293K = 7.3% defensive cap. Loan drops to $2.6M, debt service to ~$220K, DSCR climbs to 1.33x. Now the lender is happy and you have a real margin of safety.
Push more equity in. Drop LTV to 55%. Loan = $2.475M, DS = $210K, DSCR = 1.40x. Cap rate didn’t change but your equity check went from $1.75M to $2.18M. Year-1 cash-on-cash drops from 5.5% to 3.8%. Trade-off: lower risk, lower return.
Walk away. Sometimes the right answer. The seller almost certainly has another buyer at the asking price who hasn’t done this math.
The point: you don’t make these decisions in your head, you make them in the model. Plug your real numbers into the Independent Storage Cashflow Calculator (link below) — it’s the same one we use for our own diligence — and watch what each lever does to DSCR and cash-on-cash in real time.
Three red flags that should stop you cold
After underwriting dozens of facility deals over the last 18 months, here are the three signals that have correlated with deals that turned ugly post-close. If you see any of these, slow way down.
Red flag #1: A pro forma with no historical actuals
If the seller can’t produce 24 months of bank-deposit-verified rent rolls, you are not buying a facility. You are buying a story. Walk.
The number of mom-and-pop deals where the broker hands over a one-page Excel summary and stalls on the actuals is staggering. A real storage operator has clean books because they’ve been running the place for years and they want to refinance someday. If they can’t produce historicals, either the facility isn’t the business they say it is, or they’re hiding something specific. Either way: walk.
Red flag #2: A ‘lease-up’ story baked into year-1 economics
If the underwriting requires you to take occupancy from 73% to 92% in the first 12 months to hit pro forma NOI, you are not underwriting a stabilized deal. You are underwriting a development project disguised as an acquisition.
Lease-up takes 18–36 months in any market and is wildly sensitive to local supply, marketing spend, and macro conditions. If lease-up is the thesis, model it explicitly: subtract 12–24 months of below-stabilized cash flow from your purchase price calculation. The seller is asking you to pay for NOI you have to produce yourself.
Red flag #3: A capital stack that requires everything to go right
If the only way the deal works is at 75% LTV, 25-year amort, 6.5% rate, AND a property tax appeal that hasn’t been filed yet, AND the seller’s overstated occupancy holding through year five — you don’t have a deal. You have a string of conditional bets that compound into a single conditional outcome.
Every senior real estate investor we know underwrites the deal three ways: optimistic, base, pessimistic. The base case has to pencil before any of the optimism gets you excited. If your base case requires the optimism to be real, your base case is your optimism.
What to do this week
If you’re sitting on a deal right now, three concrete actions.
First, pull the seller’s actual operating statements (24 months minimum). Reject any deal where you can’t get them.
Second, run the deal through a defensive model — yours, ours (linked below), or your CPA’s. Don’t accept the seller’s pro forma at face value. If the numbers don’t pencil defensively, they don’t pencil.
Third, stress-test occupancy. What happens to DSCR if occupancy drops 10 points in year 2? If the answer is ‘loan covenants get tripped,’ reduce your offer until that’s no longer true.
Storage is still a great asset class. The economics still work for operators with discipline. But the days of ‘any storage facility at any price’ cash-flowing through any cycle ended in 2023, and the brokers selling deals in 2026 haven’t all updated their pitch decks yet.
The math hasn’t changed. The discipline has.
Next week’s Friday Deep: ‘The 30-day rate-optimization sprint that recovers what you left on the table.’ A walkthrough of how to audit street rates, run an ECRI cycle, and set up dynamic pricing in 30 days — for operators who are tired of giving away revenue.
Reply to this email if there’s a specific deal you want us to walk through (anonymized) in a future Deep. We answer everything.
— The Editors of Per Door