Can anyone recommend a good experienced builder that does icf.
Go to the distributors of the block and ask them who is their most reliable, long term contractor customer and start there. Start wth 3. Interview them and talk to their references.
You can do the utilities yourself, but I highly recommend the assistance of a plumber, electrician, etc., that has experience on ICF. In advance, before you make the mistakes that take so much needless effort to correct. Once you find the ICF contractor, he will know subs that he likes to have work on his jobs.