What a concession is, in one line
Free rent, given once, spread across a whole lease term — which means the monthly number it produces is never the number on the sign.
Take the most common Houston offer right now: two months free on a 15-month lease at $1,450 advertised. You pay 13 months of rent across 15 months of occupancy. That’s $18,850 total, or $1,257 a month. Not $1,450, and not the “$1,208” you’d get if you mentally applied it to twelve months.
That gap — between the sign, the naive math, and the actual figure — is where renters lose the comparison. Everything below is how to close it.
The formula
Three steps, and you can do it on a phone:
- Months you actually pay = lease term − free months
- Total paid = advertised rent × months you pay
- Effective monthly rate = total paid ÷ lease term
That’s it. The only trap is dividing by the months you paid instead of by the lease term — which produces a number that’s simply the rent again.
Worked example: two offers that look identical
Both units advertise $1,450.
Offer A: two months free on a 15-month lease. 13 months paid × $1,450 = $18,850. Divided by 15 = $1,257 per month effective.
Offer B: one month free on a 12-month lease. 11 months paid × $1,450 = $15,950. Divided by 12 = $1,329 per month effective.
| Offer A | Offer B | |
|---|---|---|
| Advertised rent | $1,450 | $1,450 |
| Free months | 2 | 1 |
| Lease term | 15 months | 12 months |
| Months paid | 13 | 11 |
| Total paid | $18,850 | $15,950 |
| Effective monthly rate | $1,257 | $1,329 |
Offer A is better by about $72 a month. It’s also a three-month-longer commitment, and “two months free” made it sound like a much larger gap than $72.
Why 15 months?
Because a longer term dilutes the free months across more months, so the effective figure looks lower while the advertised rent — the number that drives next year’s renewal and the number reported to the market — stays untouched.
There’s a secondary effect worth noticing: a 15-month lease signed in June expires in September. Lease expiry season matters. Landing your renewal decision in a high-demand month is worth less to you than landing it in a soft one.
Neither of these makes the offer bad. They make it a structure with a shape, and the shape is knowable.
The two questions the effective rate doesn’t answer
What does it reset to? Your concession applies to the first term only. At renewal, the community calculates from the gross $1,450, not from your $1,257, then applies whatever increase they’re applying that year. That’s covered in what happens to your rent at renewal, and it’s the single most expensive thing renters skip.
What if you leave early? Many concession leases include a clawback clause recovering the granted free rent on early termination, usually on top of a reletting fee. On Offer A that’s up to $2,900. It normally sits in the concession addendum rather than the lease body, which is why it gets missed.
Three questions, every time
What’s the effective monthly rate? What does it reset to at renewal? What happens to the concession if I leave early? If a leasing office can’t answer all three, that’s information too.
Add the fees before you compare
An effective rate that ignores recurring fees isn’t comparable to anything. Houston leases routinely carry garage or parking charges, valet trash, an amenity fee, pest control, RUBS water billing, and sometimes mandatory bulk internet. Together those can add $100–$250 a month.
A $1,450 unit with a $1,257 effective rate and $180 of monthly fees costs $1,437. A $1,520 unit with no concession and $40 of fees costs $1,560. The gap is $123, not the $70 the advertised rents suggest — and it moves again if one of them has a garage you’d otherwise pay for.
Where the heavy offers are right now
Houston softened modestly through 2026, with occupancy declining slightly and rents easing (Greater Houston Partnership / CoStar, Q1 2026; metro average $1,349, RentCafe July 2026). Class A product leans on concessions when absorption slows, so the heaviest offers sit in the high-rise segment around Galleria/Uptown and Downtown, plus newer suburban lease-ups along the Grand Parkway.
Those figures are arithmetic on terms advertised as of a date. They’re not price quotes — communities set their own rates and change offers regularly. If you’re shopping that segment specifically, see how we handle luxury and high-rise searches, where the fee stack usually matters as much as the concession.
The short version
Do the three-step math. Add the recurring fees. Ask for the renewal number in writing. Read the clawback clause. Then compare.
Or send us the two offers you’re weighing and we’ll run all of it, on every option worth comparing, free — the property pays our fee after you sign, so the answer isn’t tied to which one is more expensive.