Investors must understand the direction of the market before investing, which is a mistake a lot of new investors make.

And, then, to give themselves an excuse for their mistake, they said: "But nobody saw this one coming".

Many make the mistake of focusing solely on the acquisition and think that is the key to success but the post-acquisition part of being an investor is equally as important and it is NOT intuitive, especially in Philly.

Quote from @Abass Aden: What are the most common mistakes new house flippers make, and how can they avoid them? 

There is a battery component but this eliminates about 90% of the battery need. 

I don't have any pending legal issues at the moment, but I've been thinking I should find a lawyer that I can go to for questions, to review documents, leases, etc so that I can have confidence that I'm not making any silly mistakes that will get me into trouble later on.

It may be worth the investment if you decide to do out of state to eliminate any potential mishaps when it comes to timely repairs if needed. 

There could also be a change to the HOA by-laws eliminating the right to lease and alternatively if too many units are tenant occupied it could impact the warrantability of the financing which would be problematic if you wanted to sell the unit.

That is much easier.I made a mistake in tenant screening process by placing too much trust on Zillow since I used it for tenant's applicatiion and screening process.

One of the biggest mistakes is to focus on solely cash flow and achieving a BRRRR.