The rent you will actually collect in year ten.

The small number that becomes most of the upside

An escalation is the clause that raises the rent over time, and on the page it looks minor. Two percent here, ten percent every five years there. Over a single year it is a rounding note. Over a ten-year hold it is most of the growth in the deal, and on a long net lease it is often the only growth there is. The year-one rent is where the income starts. The escalation is where it goes.

Four shapes the increase takes

• Fixed annual: the rent steps up a set percent every year, commonly around 2 percent. Smooth and predictable.
• Fixed periodic: a larger step on a schedule, such as 10 percent every five years. Same idea, fewer and bigger jumps.
• CPI-linked: the rent tracks inflation, sometimes with a cap, sometimes without. Protects your real income, within the cap.
• Fair market value: the rent resets to market at set points. The most upside and the most uncertainty, since it can move either way.

Same starting rent. A spread of more than 100,000 dollars in year ten, decided entirely by which clause the lease carries. That is why the escalation is not a detail. It is the growth engine of the deal, written in small type.

What inflation does underneath

Nominal rent is only half the story. A flat lease that pays 6 percent going in is quietly paying less every year, because the dollars buy less. If inflation runs 1.5 percent, that flat 6 percent is closer to 4.5 percent in real terms by year ten. A CPI-linked lease holds its real value because it moves with prices. A flat lease does not, and the strongest credit in the world does not fix that. It only guarantees the shrinking number arrives on time.

Escalations also follow you to the exit. A buyer prices your building off the rent in place, so a lease that has climbed for ten years sells off a higher number than a flat lease that never moved. The increase you collected along the way is the same increase that lifts the sale price at the end. A flat lease pays you the same dollar in year ten and hands the next buyer the same flat problem. A growing lease pays you more and sells for more.

The year-one rent is where the income starts. The escalation is where it goes.

Do the walk by hand

When you read a memorandum, do not stop at the going-in rent. Walk the rent forward, year by year, to the end of your hold. The fully escalated ladder tells you what the building pays you a decade out, which is the number that actually funds your return. Today rent gets you in the door. The escalation is what is waiting on the other side of it.