How many stories? Below Grade? Are floors Similar? I'd guess about 3 sheets of notes, as many sheets as floor plans, 2 sheets for building sections and large section details, 1 or 2 sheets for details and 1 or 2 sheets for schedules... Figure roughly 12-16 hours for notes drawings (engineering time) and say 40 to 50 hours for the other sheets with approx 15 hours per sheet for engineering time and the balance drafting. That will give you a rough fee.
Find out what the budget is and use 1.0 to 1.1% (parkades tend to be a little more work due to corrosion issues, expansion/contraction, etc.)
See how the above numbers compare... if you're hungry go for the lower one, if you're turning work away go for the higher one... or in that ballpark.
Are you providing construction review, specifications, shop drawing review... limited of these, then the % is a better indicator.
Dik