Because after purchasing the new rental for $700K that leaves them $300K initially, so take $260K to pay off their mortgage, and still enough left to cover a good chunk of the taxes owed. 

I have a one page lease addendum to cover this, that is executed with every tenant and every lease.

A platform that updates their data daily or weekly is covering a staggering cost in order to provide that to the end user.

For me as well as the seller.First, you have to define Sub to financing.Do you mean the reckless kind where you overpay for a property, take over the financing and borrow from others to cover closing costs and holding costs when you have no money, no credit, no income, no reserves and can't tell a warranty deed from a deed of trust and you close on the kitchen counteror do you meanbuying below market value, already having a nice income, having reserves, using escrow and title, already understanding the due on sale clause, have done a lot of creative purchases and know when to use and when not to use creative finance and how to recover if something goes amiss?

As long as the rents can cover both the current PITI and proposed P&I payment, credit is at least 680. you should be able to qualify. 

If you are looking for more appreciation and can afford to cover a few hundred dollars a month of negative cash flow then I'd recommend looking at Gilbert.

I just saw that Antonella Parra Gonzalez, a third-grader at Harris Elementary School in Gilbert Public Schools, recently received the Arizona English Learner Students Success Story Award.Here in Austin, many investors are asking me to set up searches in Eanes ISD, Round Rock ISD (that also cover some homes within the Austin city limits), and then of course Leander and Lake Travis ISD.

It usually doesn't cover for full replacement of your property.

You'll want the rents to at least cover the monthly principal, interest, taxes and insurance (and HOA if there is one).

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.