Why use hard money in the Brrrr strategy vs starting with a loan?

[Jeremy Karja]

I know this is a basic question but my wife asked me and I did not have a solid answer other than I know it is the process in everything I have seen. And by hard money I also include other cash methods such as personal cash/HELOC to buy the home then get another loan on it later VS just taking that loan out up front? Just to get you cash back from fixing it up right?