Some web site sellers do not allow you to do this, so be careful when selecting who you buy your domain from. 

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The duplex I found I did some research on for the property (taxes, etc) and previous owner deed and mortgage records (public records) and there is a statement in the mortgage papers:THIS IS COMMERICAL PROPERTY AND IS NOT INTENDED TO BE THE HOMESTEAD OF THE MORTGAGOR HEREIN.I'm focusing on the "COMMERICAL PROPERTY"......Up to now I was not thinking that duplexes were considered commercial property....There are triplex units and quads and of course jumping into the 10-20 units and those I though were considered commercial.I guess if I step back and look at the fact that the dwelling houses multiple tenants, then yes I can see it being classified as commercial.I can't find anything on the county appraisers web site for the records of this property that indicate "commercial".

@Traci PickettBP is full of useful resources such as forums and blogs.

Welcome to the Bigger Pockets community-be sure to check out all the awesome BP blogs under “Learn.”

@Brian Slater Here is some info on cash out financing....http://www.biggerpockets.com/blogs/5110/blog_posts/42766-all-about-conventional-cashing-out-on-those-properties-1-10If you will have negative cash flow, why wouldn't you increase the rent?

Read more… http://www.worldwidecommercialfunding.com/blog/blog-no-upfront-fees/

Make sure to view the BP blogs under "Learn."

I think I found the answer in the comments on one of Seth's blog post where he says"I generally don’t hit it again until about 1 year later (though you could probably hit it as early as 6 months later if you had the capacity to do so)."

http://www.slate.com/blogs/the_slatest/2015/05/22/...Imagine knocking on this door and bring invited in.