Cost to replace a flat roof in Chicago about 1350sqft?

[Byron W.]

I had a roofer come by in December to fix a leak and it appears the leak is back. They gave me a 1 year warranty but when I spoke with the guy on the phone, he was making it seems like he did all he can do and my only options are a replacement. I'm going to see if I can still get him to fix it since it's supposedly covered under a one year warranty and it's leaking in the same exact spot as before.

My question is, what's a reasonable cost for replacing a flat roof of this size? It's a 3 unit building, about 1350sqft. I was told somewhere in the realm of $10k. Any help is appreciated, thanks!

[John Warren]

@Byron W. 10k is a common quote, and I just had one of my roofers quote a three unit flat roof job in Berwyn and he came in at 10k as well. You should ask a lot of follow up questions though to make sure you are getting an accurate bid. Which roofing material is the roofer going to use? A lot of them use either modified bitumin or TPO. Also, make sure they are planning on doing a full tear off. I know this seems obvious, but with flat roofs a lot of the roofers will put another layer over the top if it is currently modified bitumin. This is ok, but you should be paying a lot less if this is the case. Lastly, make sure they are budgeting for any repairs to the parapet wall. A lot of time the parapet walls need some additional tuck pointing work to be done when you do the full tear off.