strutaeng
Well-known member
I researched doing underground when I was doing my 2-story addition.
I had to dig a trench 3' deep and use 3" conduit. It was going to cost me about $3000 just to do that.
It's only 24" here from grade to top of conduit. Conduit is 2" diameter. My trench guy dug 27-30" deep. Electric company here charges around $1500. I'm told on new construction they give you option for overhead or underground at not cost up to a "budget."
Trench guy was like $600, but had gotten another bid for twice as much! Conduit was less than $200. Total horizontal run was about 80' from power pole.
The problem that I had was that I live very shallow to limestone. Trench guy had to use demolition hammer to get to the required depth in some locations.
Clearly, the cost of the conduit is minimal considering all other expenses. This builder thought he was rollin', LOL.
