So many good points to consider from you all. I'm still teetering on the fence about it.
XR250: yes, I'm trying to figure out what my fee would be. Starting by identifying a possible lateral system, column locations, etc. It's a pretty straight forward design in that sense but what to base the fee on? 1 or 2% of total construction costs which, just googling I found a cost for elementary schools of $300/ft2.
AVSCORREIA: you mention liability coverage, I was under the impression I would only need to up it above the 1 mill policy I have if the client required it.
Kootk: I'm still hesitant to hire directly mainly because I have no room in my "home office" for an employee. This question was bound to come up sooner or later but so far I've been steering clear of all the complications and overhead of expanding. Part of my strength and peace of mind is that I do all the design and drafting so I know each job intimately however, on a bigger job like this it seems necessary to have a second set of eyes on it. I do have another engineer who I'm starting to collaborate with so your idea is a good option.
Archie264: True, I probably would regret not at least going after this job given how much time I spend on getting, setting up and managing all the small jobs.
Badger: So right about the scope creep. I can define a clear scope for a particular design but how do you estimate a fee for the preliminary phase which has to go through community approval and likely will require changes? Should I just provide lump sums for each phase with any changes to each phase being additional? How do you proportion the fee for each phase?
Kipfoot: Good point. I have worked with the architect on several smaller jobs and feel relatively comfortable but can't say we have a working relationship. I cannot tell if he's interested in bringing me in because he likes my work or because he thinks I'll be cheap.