I followed the video instructions above and it took a while to figure out the technique to apply the mortar, but once I got that down it went smoothly.

This means evictions and other complications tend to rule in favor of the investor if you do all the right things.Understand property taxes in your target market. 

Loan applicants may lose their job and the underwriting process may experience delays to further complicate transactions.Real estate attorneys should be prepared for unforeseen circumstances.

I understand (by you saying it's an algorithm) that its more complicated than a simple "max 20% income" or something. 

It taught me everything from construction techniques, to how to manage a SFR, dealing with tenants, how to contest a tax assessment, and much more.

They could be shorter, but often are longer, depending on the complications of the transaction such as; How many liens are on title, how cooperate are the seller/borrower(s), and what does the banks value come back at, etc.

if too complicated, i will hire an agent, but hope to save some money (one-month rent) because I already bled a lot by doing rehab...

@Jonathon N.I pretty much do all the same techniques that most wholesalers that you read about use.

On top of the usual challenges of working on a historic project such as this, the previous owners of the building had done a large amount of unpermitted work over the years, complicating things further. 

@Steven Jones also, have you found/learned of any useful techniques for finding properties that aren’t on the MLS?