Tellycoleman said:
I'm thinking 4-6 inches at the least. But I'm no expert. Let others respond.
Those areas will eventually become uneven and bumpy. You will have to level in about a year.
I have areas along the driveway, foundation, and back patio, where the pour got a little wild and sticks out from the structure up to a few inches in width, a few inches underneath the sod. The sod was installed last year and has had problems rooting obviously.
Do most people just suck it up and let it yellow, water it more often, or try to cut it in line with the foundation or driveway using a cut-off wheel?