.- In my experience Best case scenario at least 30 days of listing and 45 days of underwriting...Unless you are in a hot market or discount the price well below market. 

@Jimmy Danblaus the down payment is based on purchase price, no matter the discount you are getting.

For this certainty, I demand a discount to market value and I, almost always, receive it.

The issue is, you're not a contractor, and most large companies wont give you a discount and they will treat you as a walk-in client or they will give minimal discount, most of these wholesalers need you to have an account with them, the more you buy the greater the discount.

I'm surprised though that Homepath discounts properties that much.

So, they may occasionally be able to bring a target purchase but more often be able to help find buyers – or even take the parcel themselves at at a reasonable discount to FMV and build a house on the land.It feels a bit like setting up an entity per deal might be the right way to go – albeit might be inefficient; maybe take too much time and has more costs involved.

I should have added that with the tax advance + mod option, your advance is included in the UPB of the modified loan, so when you sell your will be compensated for the tax advance (minus whatever discount % you are offering).

So would it be better to list the property at a lower price of $65k or at $75k and give them a 'repair allowance' or discount of $10k, effectively bringing their price to $65k.  

Owners would sometimes rather sell the property at a discount than fix the issues themselves. 

You are either trying to buy equity or cash flow (at a discount).