Am I too slow or am I doing more due diligence?

[Brandon Wood]

I recently missed out on a deal after spending 3 days calculating, calling contractors, and trying to schedule a time to look at a property. It was a two-house deal under one deed. One was partially renovated, but the renovations looked sketchy (20-inch wide shower, rippling siding, exposed lam beam in the living room hanging down about 10 inches, etc.). I calculated my maximum allowable offer at $71,000 because I have to use hard-money or private money at 12% as it’s my first deal. They were asking $85,000. I was finally able to look at the property only to be told as soon as I left that they just assigned the contract that day. I asked him how much it went for and he said $81,000.

Does 3 days seem unreasonable for due diligence on a first deal?