So here's my scenario and question...The seller made an insurance claim to have his roof replaced after a recent bad hail storm.

You could be in a good spot with those Tonhomes if there seems to be a great demand that you can fulfill.  

Hi @Vishal Patel, since I just started to learn about real estate I too felt weird at first of the "subject to" but after reading up on it, it could make perfect sense for the seller in a tough position as most seller are not trying to ruing their credit. 

If there are thousands of brand new, rental units down the street, will supply outpace demand? 

The seller was renting it out previously and the renters completely destroyed the home.

If they own several they are obviously investors.Once you get a response from the seller of the vacant house, negotiate a deal to buy it for all cash and get it under contract.

If I'm working directly with a seller/owner I never use an agent.

Clinton this just does not happen these days.. seller financing could work.. or partner with a cash partner .. you will just waste an inordinate amount of your time if you have no cash to work with.

Second @Dylan Tanaka comments.We also have found that a great technique is a pre-recorded message the seller can listen to when responding to your marketing.

They may be willing to seller finance.Or you can find a partner through networking that might have great credit and money to help you get started!