It burned to the ground a week after purchasing.

Since you’re assuming this debt as part of the purchase, understanding the exact amount is critical.

I'm looking at purchasing a small multi-family rental property in the Allentown or Philadelphia area, and I plan to use the BRRRR strategy.I'm struggling with the best way to analyze potential properties to ensure a solid ARV and would love any advice on effective tools or methods you use.

The property that you sell and then purchase through a 1031 Exchange must be held for rental, investment (capital appreciation), or used in a business. 

The primary thing you're going to run into is whether or not a lender, at purchase of the property, will allow there to be a secondary lien on the property.

Quote from @Rene Hosman: @Austin Wolff recently went through this process of identifying markets to purchase in and he goes over his thought process in this episode on the Rookie podcast about how he used the MarketFinder here on BiggerPockets to find markets that met his criteria Podcast: https://www.biggerpockets.com/blog/rookie-473MarketFinder: https://www.biggerpockets.com/marketsI specifically only focused on 2 markets (Indianapolis and Fayetteville, AR) before I found a deal using the BP "deal finder."

The plan is to purchase a new home & keep current as a long term rental.

Our primary objective as coaches is to help clients ask the right questions, develop the right criteria, and identify potential red flags. 

They also didn't get hit with capital gains on the entire purchase price, which enables them to keep more of their money. 

I have met and spoke to several people that have joined Brads group and purchased and sold several deals because of it.