Pressure treated lumber

Generally for the most common deck are made off 100% pressure treated lumber and are $25. a square foot. Larger sizes generally are $22. per square foot.

10x12 = 120 sq.ft = $3,000

12x14 = 168 sq.ft = $4,200

14x16 = 224 sq.ft = $4,928 is @ $25.sq.ft.

So just to give you a idea and of course your size may be different. All above pricing includes, Permits, Footings, Stairs, Railings, Copper flashing (new code , Clean up of job site and Blue Prints.

Yes you can add a composite decking and composite railings if you like. These prices change more then the weather it self so I really can't say here on the Internet what they are. These prices would have to be figured out at the time of the estimate.