The heart is very misleading

Standard concrete patio slab, would be 4 inches thick.
How much site preparation is necc.?
Is it on shifting soil & thus needs a type of footing or some post hole supports, to help prevent shifting, cracking & thus a shorter life for the concrete.

Personally I think you should get 5-6 bids. Talk to all biders & ask what they would do at their house; what will last the longest with the least amount of cost. I would also bet you know someone, that knows someone in construction, get their opinion of the bids & the project.

I did a 16 x 20 concrete slab, last year. Put 12, 3 ft. deep post holes filled with concrete, at time of pouring, to support it; as it is on shifting soil. We used "fiber concrete" due to it's added strength & didn't want to use reinforcement wire mesh. Be sure to have the installer, "strike" the slab into 4 sections, so that if it does crack, it should crack in the strikes.

"striking" is the lines made into the concrete, while it is wet.

Edit: To tell if the size is big enough, take 4 coat hangers or markers of some type; mark the cornors & put what you want on the slab, inside the marks. arrange how you will & see if YOU are happy.
Will cost much less to bigger NOW; rather than later.
If you have a good installer, this is a standard action.

Hope all this helps, please feel free to contact me direct if you feel I might help further.

How deep is the patio because to do a good estimate you need to know the volume of concrete that you are being qouted. its not a bad price but a little online research and you can find out what kinda of profit you are allowing him to make off you.

No she didn't it says foot.

Good, cause that size would definitely NOT be big enough for tables and a grill

Do you mean 16 feet by 16 feet? Cause you put 16 x 16 inches

She doesn't snort cocaine. She just likes the way it smells!

I have a ocean side property in Nebraska to sell to ya also! What a crock! Obama is only out for Obama!