Pier-and-Beam Foundation Costs

[austinbirdman]

Hey, just wondering if anyone can help me with this. I am using a local small-job contractor to put a pier-and-beam foundation under a 504 s.f. addition we're building ourselves. Anyone know what the rough costs for this ought to be? It's on normal soil with a very moderate grade. The piers will be about 2' tall each sitting on 2'x2'x1' footings that are 2' below grade. There are 13 piers-on-footings in all.

Any estimate even very rough will be appreciated. - J.B. Bird, Austin, Texas

[glenn-k]

There are lots of variables - cost could range widely but known things are 4 cubic feet concrete x 13 footings+ 2 feet piers at 12x12 = 2cu ft ea so 13 x 6 cu ft =78 cu ft /27 =  2.88 yards or 3 yds at $110 = $330 concrete

Short load fee - concrete - $100- $200

Form materials could run $100 or more

Machine or hand dig could run $200 to $500

Hardware - anchors - rebar - stakes - $200 to $400

Misc costs - profit - overhead - $200 - $400

My guess would be $1130 to $1930 for the footings with piers.  

There can be lots of things to affect price -- regional differences - doing it yourself - mixing your own concrete etc.