Not having the plans to look at, here's a couple of the top of the melon...
What type of wiring method? Romex? EMT? RMC? K&T?
(That was a JOKE BTW )
Height AFF for switches / outlets?
Ceiling fans in any of the rooms?
Time frame from start to completion?
Nail down change orders - who can and cannot authorize, and adjustments to the original bid for additional work.
If you can arrange payment for supplies before work starts (as a deposit), AND keep a lein against them until payment is completed, that's a good start (dunno how your credit is with your supplier, but I work mostly on a cash basis, and include this clause in my contracts)
Search the General Discussion posts for contracts - there are some tricks, and subtle differences in wording can make the language work for you, or against you.
One-Upmanship? Offer supplemental or isolated grounding and 4-receptacle boxes where computers will be installed in the house. Offer to run cable / phone / data lines to all the rooms... multiple points in larger rooms (living room comes to mind).
Offer to run circuits in the Basement that are "finish ready", in terms of capacity and spacing - maybe even "set" for easy installation of can lights in the future.
There are lots of little tricks - tell 'em you're providing the best service for a fair proce!
Good list. Be sure to ask if there will be anything "unusual" for hobbies or home business. My personal garage has electric heat,7.5 HP compressor, and an industrial duty welder. Things like that could blow you out of the water.
Sparky,wouldn't it depend a lot on the individual airhe... I mean customer?
Some can assimilate more info than others,and my experience has been that when you start with the home theater etc. it just clouds the issue.
I like to do a room by room rundown so we both know what I'm pricing and what they're paying for. Get the basics,then go for the home theatre,multiple phones/tv's. Wouldn't recess lighting look good in this kitchen?You think you might want a disposal at some point? How about those uc lights?
Personally,I've always had better luck this way, and having everything up front instead of pricing a bare bones barely code job and then laying on the "Extras"