A concession changes the average, not every payment
“One month free” has an economic value, but the lease may still require the full stated rent in most months. Effective rent spreads that value across the exact lease term, creating a comparison number rather than a new payment schedule.
Free weeks need their own conversion. Four weeks are valued using annualized weekly rent, so they are not automatically identical to one calendar month.
- Check whether the concession is applied upfront, later, or across payments.
- Use the full lease length instead of assuming a 12-month denominator.
- Keep the stated rent visible alongside the normalized result.
Recurring fees can outlast the headline discount
Required parking, internet, trash, pet rent, service packages, and estimated utilities can add to every month. A one-time move-in fee behaves differently: it affects total lease cost and can be spread across the lease for monthly comparison.
Consistent boundaries matter. If utilities are included for one apartment, either estimate them for the other or clearly leave them outside both sides of the comparison.
Refundable and nonrefundable are different accounting views
A nonrefundable application or move-in fee increases economic lease cost. A security deposit can increase move-in cash without automatically becoming a permanent expense.
Refundable does not mean guaranteed. Lease terms, property condition, deductions, timing, and applicable rules can affect how much is returned. The calculator therefore displays the entered deposit separately instead of promising a future refund.
Worked comparison
The lower advertised rent can cost the same
- Apartment A advertises $2,400, gives one free month on a 12-month lease, and charges $200 per month in required fees.
- Its net base rent averages $2,200 per month. Adding $200 in fees brings the all-in estimate back to $2,400.
- Apartment B advertises $2,300 with no concession and charges $100 per month in required fees. Its all-in estimate is also $2,400.
The housing estimates tie before commute and nonfinancial factors. The ads alone would not reveal that.