This is an age-old question. Some day I like to write a book about it. Let me start by saying that I hate it when some asks me how much does it cost to engineer this. Folks, pick the most qualified engineer to do the job. Cost, while important, is secondary. You wan an experienced, competent and well-qualified engineer to do your design. Otherwise, you are left wide open for poor design, incomplete design, design performed by junior engineers and you the client will be left out to deal with the short comings of such designs.
Having got that out of my chest and without divulging my trade secret of how much to charge (result of being in the business over 23 years) I would refer you to the ASCE publication titled "How to work effectively with consulting engineers, getting the best project at the right price. This publication can be purchased directly from the ASCE at
Your question cannot be simply answered by saying $1500 per sheet. There are so many factors that impact the design fee. You also may price your self out of a project.
Her are some factors to consider:
1. The complexity of the project
2. Are there many details to generate?
3. How complicated the details are there
4. How many design reviews are you going to hold with the client
5. Is the client easy to deal with?
6. Do you have to meet with regulators?
7. Do you have to acquire outside help (i.e. Geotechnical consulting, building envelope consultant, etc.)
8. Are you going to support during construction
9. Are you going to be asked to design within normal relaxed schedule?
10. How much printing do you have to do?
11. What is your overhead?
12. Is there any travel to be done and how and what si the duration
13. Do you have support the bidding process?
14. Do you have to answer to several reviewers within the client organization?
There has been long standing percentage numbers that the federal government uses such as 6%. This percentage drives me up the wall because it has no strong rational any more plus it is very old.
I think I will stop here. I think this will give you an idea that there is not one set figure to price engineering work.
Good luck