I would like to know what is the average to pay a carpenter/electrician/plumber. I just finished a job for a friend which included const. a 400 sf. screened in porch under a camp. Not a easy task, working around steel I beams, hardie planking the top and bottom, installing ceiling fans, outlets, etc... and other various tasks. The cost of materials is around 1700.00. I do not want to ask too much, but do want to get compensated properly. Thanks for any help...