What is effective rent and how do I calculate it?
Effective rent is your average real cost per year after concessions and escalations: total base rent, minus free rent and TI, divided by the lease years.
Effective rent is the true average rent you pay over the full term, after concessions like free rent and tenant improvement allowances and after escalations are counted.
To calculate it, add up the base rent for every year of the term (applying the escalation schedule), subtract the value of any free rent and the TI allowance, then divide by the number of years. For the most accurate comparison, discount those figures to present value. Effective rent matters because the headline rate hides both concessions and future increases: a higher quoted rate with strong concessions can have a lower effective rent than a low flat rate. It is the only number that compares two proposals honestly.
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