@Michael KennedyI made no down payment on my first property. I only paid closing costs and rolled my VA funding fee in with the loan.
I don't know all the appraisal requirements, but on my second use of the VA loan which is my current primary residence the issue that held our closing up was chipped paint which is not allowed by the VA. This chipped paint was on a shed in the backyard not even on the house. As the appraiser put it, "it just says chipped paint it doesn't say where or on what". Any and all issues like this that are found must be fixed prior to occupancy according to the VA. We were able to delay the fixing of this because we purchased in winter and a very heavy snow winter at that and were not going to be able to paint it for over 30 days so we were allowed to put the sellers money in an escrow account and have a contract with a painter to remedy it as soon as possible.
On that note, don't think that you're going to be able to buy a multi family that needs work and rehab it, the VA won't allow that. If there are items to be fixed like my paint story you will not be allowed to do it yourself, the VA requires the seller to take care of all these issues, whether they do it themselves or hire a contractor.