Speaking of books, I’ve gotten good mileage out of this book for Property Condition Assessments, it’s an interesting read and probably would change your thinking a bit.
Commercial inspections are being marketed here as “easy / anyone can do”, and to an extent that may be true, depending on the building and what your client wants. You should also be asking how much risk they (the buyer/client) want to bear vs. the inspection costs, to help build a menu such as Ancillary inspections, engineering services, third parties and so on. It’s really up to you and the client to come to an agreement… but not always so easy to change hats on a switch.
When you inspect a home, deferred maintenance equals comments such as those for painting trim, noting some dilapidated fixtures or installations, but IMO, that should equal statements that can help guide your customer, that you wouldn’t (and shouldn’t) make in a home inspection report.
Another facet that often comes up is “how much is that going to cost to fix?”, while most shy away from this, many commercial buyers will want Probable costs or maybe even an estimate over the next 3 or 5 years… what would you do? Do you have experience to draw on? Purchase RS Means etc… (By the way, I can create Work Scopes for this in HG, not that I’m in the software business… other folks seem to have that covered)
Just my two cents, good luck.