Ground Lease Escalation Calculator

Ground rent compounds. This calculator projects escalations across a long hold.

Starting annual ground rent

CPI escalator %

CPI cap %

Reset interval years

Reset multiplier (x prior rent)

Hold years

Final year rent

$1,328,306

Total rent paid

$26,803,591

Average annual rent

$670,090

How the math works

Each year rent grows by CPI (capped). At reset years it resets to a multiplier of the prior rent. Total = sum of all annual rents; final = last year's rent.

$240k start × 3% CPI × 1.8 reset every 20 years over 40 years: year-40 rent ~$780k, total ~$19M, average ~$475k. Resets dominate total burden.

How to Use

Enter starting annual ground rent.
Enter CPI escalator %.
Enter CPI cap %.
Enter reset interval years.
Enter hold years.
Read final rent and total paid.

Frequently Asked Questions

How do ground rent escalators work?

Most modern ground leases tie annual escalation to CPI or a fixed index, usually with a cap (3-5%) and sometimes a floor (1-2%). Periodic market resets — every 10, 20, or 30 years — re-mark rent to a percentage of land fair market value, producing step changes that can dwarf the annual drift.

What caps are typical?

Retail/industrial ground leases: 2-4% annual cap is common. Trophy urban sites: 3-5% or uncapped CPI. Reset provisions often calibrate to 6-10% of appraised land value, which in a hot land market can double rent overnight — lenders typically require modeling the worst-case reset.

Why does this matter?

Ground rent is senior to fee mortgage debt and can reshape economics mid-hold. A 3% escalator over 40 years lifts rent 3.3x; a mid-hold reset can 2x it again. Value-add buyers must underwrite escalation plus the next reset, not just current rent, to avoid buying into rent shock.