Chiefuserodd

This question will be like a potential client asking how much to build a house without knowing any details.  

I've always done drawings for free as part of the process of getting a job.  Whether it be a deck, addition, or whole house to build.  Probably why I'm still poor and never made anything of myself.  Now I've been asked to do a set of construction drawings for an addition.  I have no idea what to charge to do the drawings.  I know I'm going to do all the typical views and details.  Some of the details can be generated easily due to saved elevations and details from previous drawings.  I've started putting together an excel spreadsheet to get a feeling of the total time I'm going to put into it.  Any suggestions of how to figure a fee for this?  I suppose even if it takes me twice or three times as long as I figure, It'll still be better than not having the job.

Thanks ahead of time for any suggestions.

Cheers,

Odd