Depending on the application, first, last, security, and another month or two.

Whey are you looking into a HELOC a month before closing on your first property? 

Now that the unit is finished, it's going to be listed for $2,450/month and the same model on similar lots are appraising for $410k.

I did one a few months ago and I’m pretty sure it was under $1,000, $7-800?

I listed my South Austin property for room rental six months ago.

No one knows:(It could take a week, a month or more than a year of constant followup until an owner is motivated to sell. 

If your budget is so tight that you can't handle a small leak, what will happen when a tenant fails to pay the last month of rent and abandons the property with $6,000 in cleaning and repairs?

Another thing to consider, most single family bedrooms rent for 800-1200 monthly depending on the area.

Loopnet any deal older than 12 months, Tax GIS consistently late or 6 months past due, any property that changed hands thru probate after 12 months, Texas property tax sales land only not at auction just offlist properties, etc7.  

How much do they charge?