General Contractor New York State

Is there a general yardstick for costing improvements, such as patio and entrance?
I realize that every situation will be different, but even if there is a standard costing, perhaps per square foot, it would help. My contractor has come up with a plan and estimate to rebuild our front entrance and patio, and I would have no idea if his price is in line with similar work to a different property. The property is in the state of New York, between NYC and Albany.
get a couple quotes. Ask your neighbors if they recommend anyone. My dad does concrete, and there is no sure cost, cause there are way too many variables.
good luck chief
Tri State General Contracting Corp. Farmingdale, NY
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