best strategy for cash flow or flipping properties? finance or buy cash?

[David Taylor]

Hi everyone i have been reading here for a long time, thank you for this forum.  

if i buy a house all cash that needs repairs and is not mortgageable i should be able to get it at a lower price point and then if i do repairs like putting in new floors that should raise the value.  my main concern is that after i do all this work what happens if i go to sell it later the buyer cannot get a mortgage because maybe there is something wrong with the foundation.  is this a big concern for flippers?  how common a problem is this?

is the best solution to contact the city and find out building regulations and codes?

So what is generally considered the best strategy for buying houses in the following situation? i am looking to buy cash flow properties under 100,000 to hold and rent and possibly sell later.

A)  l heard that if you finance a property with 20 percent down you get a lower interest rate than if you do a reverse mortgage or a home equity loan. so would it be better to buy as many houses putting 20 percent down as i can?  I qualify for about 4 mortgages worth 75k each and we have more than enough savings to cover the down payments.

Or

B)  I guess the advantage of buying cash is you are not competing against buyers who are getting financing if the house is not mortgageable, but you just have to make sure you are able to get the house up to code before you sell it.  another factor to consider when getting a home equity loan is maybe the interest rate would be higher?

would a heloc be better?

so are there any rules of thumb of which option is generally  better?

Thank you.