The advertised rent may not be your monthly payment
Net effective rent is an average after a concession is spread across the lease term. Gross rent is the base rent before that concession. A listing can look affordable on an averaged basis while requiring larger payments in most months. Before comparing apartments, ask for the base rent, lease length, written concession, and exact payment schedule. Do not assume you can pay the advertised average each month.
Calculate the concession yourself
For a simple free-month offer, multiply the gross monthly rent by the number of paid months, then divide by the full lease length. For example, a hypothetical $6,000 apartment with one free month on a 12-month lease costs $66,000 in base rent for the term, or $5,500 per month on average. That calculation does not include utilities, insurance, amenity charges, or moving expenses. A flat-dollar credit can instead be subtracted from total base rent before dividing by the term.
Separate average affordability from cash flow
In that example, eleven $6,000 payments and one free month produce the same average as twelve $5,500 payments, but the cash-flow demands differ. Ask when the concession applies: at move-in, at the end, or across each payment. Create a month-by-month schedule and retain enough cash for the largest payment. Ask which rent figure the landlord uses for qualification; an average price is not a promise that you meet the screening criteria.
Compare the complete lease cost
For each candidate, record gross rent, total concession, lease length, total base rent, required recurring fees, optional services, and one-time expenses. Compare apartments over equivalent periods. StreetEasy describes total monthly price as base rent plus required fixed monthly fees; separately budget expenses that remain variable or outside that figure. A lower net-effective rent does not automatically make a longer lease or a building with higher fees the better choice.
Read the concession terms before signing
Check whether the offer requires a particular move date, lease term, payment record, or other condition. Ask whether any credit must be repaid after early termination and have unclear clauses reviewed before relying on the savings. Save the advertisement and obtain the concession in the signed lease or rider. A verbal offer is a weak basis for planning a year of housing expenses.
Budget for a renewal without the incentive
Model a second year without assuming the introductory concession repeats. Even if base rent stayed unchanged in the example, losing the free month would add $6,000 to annual base-rent spending. Actual renewal terms depend on the lease and applicable rules. Rent-stabilized apartments require separate review of regulated rent and preferential-rent treatment; a simple concession calculation does not establish the lawful renewal rent.
Questions to send before you apply
Ask: What is the gross rent? What is the total concession? Which months receive it? What will I actually pay each month? Which charges are mandatory? What conditions could remove the credit? Is the unit rent stabilized? Where are these terms documented? Use the Apartment Scorecard to keep answers next to your viewing notes and the Upfront-Cost Estimator to plan the cash needed before arrival.
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Primary sources
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