$50K in holding costs for this project is a better estimate.Closing costs are often closer to 10% and you calculated your 7% on the buy price of 600K.

For example, they charge a start-up fee to get the new property into their system, photographed, inspected, etc.

How much does it cost for inspection on a 4 unit apartment.. this is total or cost per unit

Regular inspections. 

Hey BP, I’m going to look at property this evening and I was curious if it would be frowned upon to bring a ladder to crawl up in the attic space? There is no pull down ladder and I have reason to believe there may be...

The inspections can be pretty frustrating, but guaranteed rent for that asset class is valuable.

Were you coming to attend inspections?

I'm going with my contractor tomorrow to inspect prior to considering placing an offer.

The way that I understand the process is:wholesaler drafts contract with contingencies such as inspection, title searchI review and sign - with a lawyer? 

(e.g. all cash, quick close, 20% down, no inspection, etc.)Then when they counter with a higher price, I raise my price to meet them half way, but I change the terms so they are more favorable to what I want.