Is the cash flow enough to warrant such a purchase. 

If you look at the paperwork with your HELOC you will find that the bank can close out the HELOC if they find conditions warrant such.

However be for warned BP is an incubation site for the industry so most very experienced folks already have their financing in order. your reply's from Marketplace will be dominated by the newer rehabber or the one's that have had no ability to get funding.. so due diligence is warranted .. that being said you may pull out some gems. 

Your two properties are eight units and that adds up to enough interactions with the renting public to warrant some professional management as a matter of risk management IMO.

In either case, I believe transparency is warranted and maintence receipts would help in understanding what is being done to the building to keep it staying maintained and healthy. 

We're hoping we've been good enough tenants to warrant negotiation.

I was told that years ago, and 2% is warranted because of the scarcity of money.

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I had a number of buyers have problems with warranted items post-closing, and they told me First American was very easy to deal with, and fixed the problems right away. 

First the no trouble discount ,  this is  a tenant who rarely if ever complains, when they do it is warranted and when you need to get in their apartment there is no issue to do so.