Break-even occupancy: the number that decides if you survive
Every property has a fill rate where it stops paying its own bills. Above it you own an asset; below it you own a monthly donation. Most investors can quote their cap rate and cannot quote this number, which is backwards, because this is the one that decides whether a bad year is survivable.
From The REbuild — see all 456 pages →
$96,000 of expenses plus $115,000 of debt service against $270,000 of gross potential rent is about 78 percent. That is the fill you must hold just to stay even.
Why the number moves
Three things push it up: heavier operating expenses, more leverage, and softer rents. Notice that two of the three are choices you make at closing. Take a bigger loan and you raise your own break-even; buy an asset with a thinner expense load and you lower it. This is why the same market can be safe for one buyer and fatal for another.
Why I lean on storage
Self-storage tends to break even at a materially lower occupancy than apartments, because the expense load is lighter: no toilets, no tenants living inside, one manager able to run several facilities remotely with the right software. A property that stays solvent in the low sixties can absorb a rough year that would bury a deal needing the high eighties. That cushion is not glamorous. It is why I keep buying it.
The cushion to demand
Compare your break-even to realistic market occupancy, not to your pro forma hopes. If the market runs at 90 percent and you break even at 78, you have twelve points of room. If you break even at 88 in that same market, you have bought a deal that only works if nothing goes wrong, and something always goes wrong.
Run it twice: once at your best-case rents, once with rents flat and expenses up ten percent. If the second run still clears, you can sleep. That second run is the whole reason to do underwriting at all.
The number that tells you how much can go wrong
Break-even occupancy is the occupancy at which a property covers its operating expenses and debt service with nothing left over. Below it you are feeding the building from your own pocket. Above it you are making money. The distance between break-even and where the property actually sits is your margin of safety, and it is the single number I would want if I could only have one.
Worked, on a small storage facility
Gross potential rent of six hundred thousand a year. Operating expenses of two hundred forty thousand. Annual debt service of one hundred eighty thousand. Add the two costs to four hundred twenty thousand and divide by six hundred thousand: seventy percent. If the facility runs at eighty-eight percent economic occupancy, there are eighteen points of cushion. If it runs at seventy-four, there are four, and a soft quarter is a crisis.
Break-even is the floor. Everything you do operationally is either lowering the floor or raising yourself above it.
Why storage has a low one
A self-storage facility can break even at fifty-five to seventy percent occupancy on typical leverage, because operating costs are low relative to revenue: no tenant improvements, minimal turnover cost, no kitchens. That is the structural reason the asset class survives downturns that hurt apartments and retail. A property that pays its bills at sixty percent has a lot of room to be run badly before it fails, which is also why so many are run badly.
The discipline
Buy for the gap. A deal with a wide margin between break-even and reality forgives a bad quarter, a slow lease-up, a competitor opening down the road. A deal with a thin margin requires everything to go right, and in this business everything never does.
The takeover where the gap saved me
On one facility the seller’s numbers showed ninety-one percent physical occupancy. My verification put economic occupancy at seventy-six: delinquent tenants, legacy rates, and the owner’s own equipment in three units. Break-even on my debt came out at sixty-eight. Eight points of cushion instead of the twenty-three the brochure implied, and the first quarter after takeover, when I enforced collections and lost the non-payers, occupancy dropped to seventy-one for two months. Three points above the floor. It held, barely, and only because I had priced the debt to the real number rather than the advertised one.
Had I underwritten the seller’s ninety-one, I would have taken more debt, the floor would have been seventy-four, and that quarter would have been a capital call instead of an uncomfortable stretch. The gap is not a formality. It is the difference between a hard month and losing the building.
Compute it on everything
Every deal, before the offer, at today’s rate and a point higher. Compare it to economic occupancy, not physical. If the gap is under ten points, change the price or the debt until it is not. And after closing, recompute it every time you raise rates, because a rising GPR lowers the floor and that is the compounding that makes storage work.
Economic, never physical, in the numerator
The most common way this number gets faked is by measuring actual occupancy the way the brochure does. Break-even is a cash test, so the occupancy you compare it to has to be a cash number: units that are full and paying, at the rate they actually pay. A facility that is ninety percent physical and seventy-six percent economic is seventy-six percent for this purpose, and the fourteen-point difference is exactly where takeovers go wrong. I now refuse to compute the gap until I have reconciled the rent roll against bank deposits.
What happens to it after a rate reset
Every takeover I run includes a rate correction in the first ninety days, and every rate correction costs some occupancy in the short run. Tenants on legacy rates leave, delinquent accounts get cleared out, and for a quarter the number dips before the higher rates and cleaner roll push it back up. That dip is predictable, so I model it: the break-even at closing has to survive the trough, not the pro forma. If the floor is sixty-eight and the trough is seventy-one, the deal works. If the floor is seventy-four, the same deal is a capital call in month three.
What the lender sees in it
Lenders do not usually call it break-even, but DSCR is the same idea from the other side. A DSCR of 1.25 means income covers debt with a quarter to spare; a low break-even means the same thing expressed as occupancy. When I present a deal, I show both, because the occupancy version is the one a lender can check against the rent roll without a spreadsheet, and it tells them how far the property can fall before their payment is at risk. A wide gap is the fastest way I know to make a credit committee relax.
