Purchase price: $178,000 Cash invested: $2,500 We knew we'd be in the area for at least four years, so we bought this property that has a lot of room for improvement to gain appreciation instead of sinking money into high rents.

Creating an US business entity to purchase the properties. 

In Florida, you get grandfathered on property taxes based on when the value you paid when you purchased each property.  

Let's do a quick (I hope) and dirty look at it:1 - 100k SFH bought with a standard NOO Mortgage at 5% which rents for $1k, and lets assume; that unicorns exist and fart rainbows, you have 100% Lease Up, and $0 for repairs for the first, lets say, 5 years on all of your properties, and that we buy everything on the first day of the year.Year 1: You Spend 30k to purchase house, you owe 70k your payments are: 376 a month giving you a free cash flow of 1000 - 376 = $627!

Be sure to do your due diligence when looking to make a purchase. 

I just purchased a 4-plex for 550,000$ cash flow after all expenses is 700$/month.

If you didn't do soils testing when you purchased lots, now would be a good time to understand any other hidden costs.

I have family that is moving to Philadelphia and purchasing their first house.

I am looking to purchase my first multifamily investment property via seller financing and wanted to see if there is anyone who purchases deals creatively like this often or has done so in the past and wouldn't mind helping me get started in the right direction?

You want to have the numbers looked at in advance to be proactive and avoid issues in underwriting or on the next purchase.