I agree with Scott E-2018 is the way to go as a baseline.
As far as licensing I suggest you check with your State regs. Your HI license probably won't cover it but also won't need to. There may not be a commercial insp license required. Often times in commercial transactions parties are deemed to know what they are doing.
If you aren't experienced in commercial, that's OK. Don't give the job away. Collaborate with someone who has experience and learn from it, split the fee.

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Accurate Inspections & Consulting, Inc.
773/844-4AIC
Markus Keller