A fully paid off property which now should be worth at least $300K with appreciation, I can access 75% of that with a cash out refi so roughly $225K - refi costs.To me, its a no brainer to do bi-weekly IF you plan to keep the house for that long AND you do not plan to refinance (rate or cash out).

It really is a no brainer as you begin to scale.

A yes for the strong ambitious investor, a no for me.

Plus, it's business and a no is okay.

This is a separate method besides using my WiFi router to monitor how many people may be in the house since we have a "no parties" rule.

It is true that does not apply to investment property, but what happened was that first time home buyers that did not qualify for a home loan were trying to circumvent that Dodd Frank rule by saying "oh, this is a rental property" (wink wink) and then move into it...basically creating a no-income verification loan.

It seemed like the most logical way to get into real estate, and my partner was more experienced in business than I was at the time so it was a no-brainer.

It is a no-win situation for the landlord.

:-) Outside the US I use the Corelogic calculator because our local insurance companies provide a no-frill version for free. 

Thank you @Zach Wain for your explanation when you think it's best to jump on a refinance. if rates trend another 50 to 100 basis points lower I'll look at a refi for surehow do you do a no cost refi?