Main reason is the buyer, nor I as the lender have an opportunity to view/vet the property prior to purchase. 

So current job, and prior job and then the one before that.

@William Coet - Agreed, at face value it is not a red flag, however being unable to raise all of the capital prior to closing is indicative of it not being a killer deal.

You don't have to test the house prior to placing a tenant, but it's a lot easier to test and remediate a house while it's vacant.2.

. - Tenants are incentivized to not damage the property (can lose their voucher if they are found liable)- In my experience, tenants tend to stay for longer periods of time rather than non-section 8 tenantsCons- The unit is required to meet a certain standard and pass an inspection prior to tenant occupying the unit - Tenants tend to have a lower credit score than most landlords were prefer Happy to connect and share my experiences as an out of state investor and share some additional tips. 

Considering they quoted you $200-$250 but are billing you $550, first inform them you did not agree to that amount and any change orders need to be discussed with you prior to approval.

Work with them and try to work with your prior sellers.

Like @Carlos Valencia mentioned, its good to consult with your lender to see what else is needed prior to reaching clear to close or CTC on your file.

Hi BP members, I have a building in San Francisco that is classified as a 2 unit building, in reality it is x3 apartments, the ground floor work was done prior to acquisition and not permitted.

Even in this case I would still know that prior to putting in an offer.