Greetings @Daria B. and @Mike Cumbie;  I really appreciate your taking the time to reply. 

Plant some rocks and native species and call it good. 

Dan Kennedy rocks for Direct Marketing Secrets.Hand written yellow letters on lined legal pads with small non business envelopes, hand written, cute stamps, like kitten stamps, work the best to get opened.Message needs to be short and sweet, like "I noticed that you own a property located at [Property’s Address] that appears to be vacant.If you are interested in selling this property, I can make you an all cash offer or work with you on some other terms that we both can agree on.

@Daria B. and @Chris Mason - rental comps is not required as far as I know.

I'm applying for a cash-out refi for a SFR in Round Rock.

BP Rocks!!!

I feel that another benefit of building my own list is that my leads are as rock solid  as the administration documents.Ok, enough of the back story. 

Rock on Steve!

I'm more likely to use wood or some kind of cheaper flooring with give on an upstairs apt with subfloors that give and tile on a 1st floor apt with concrete subfloor that is rock solid.  

I have always been one to prefer to do thing right from the beginning rather than using temporary band aid solutions.