Cell Tower Lease Renegotiation and Extension Calculator
Is the offer you received actually a good deal?
Cell tower carriers routinely approach landowners with lease renegotiation offers that are structured to benefit the carrier — not you. A signing bonus can look attractive up front while quietly locking you into a lower rent and weaker escalation for the next 10 to 20 years.
Before you sign anything, run the numbers. This free calculator compares your current lease against any proposed offer so you can see exactly what you would gain or lose over the full life of the new term — in today's dollars.
Why this matters: A 5% rent reduction plus a $10,000 signing bonus can still cost you $80,000 or more over a 10-year extension once you account for lost escalations. The calculator shows you the real picture — not just the headline number the carrier wants you to focus on.
How to use the calculator
1
Enter your current lease terms. You'll need your annual rent, whether your escalation is a fixed percentage or tied to CPI, the escalation rate, and how often it adjusts (typically every 1 or 5 years).
2
Enter the proposed offer. Fill in the new rent being offered, the escalation terms, any signing bonus included, and how many years the proposed extension would run.
3
Click "Calculate Comparison." You'll see total income under each scenario side by side, a year-by-year breakdown, and what the proposed deal is actually worth in today's dollars using a standard 6% discount rate.
Calculating...
Comparison Results
| Year | Current Lease | Proposed Offer | Difference |
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