In case you missed it, Detroit' Mayor Duggan announced that the value of houses in the city increased 23% in 2024.In the last 7 years, Detroit housing is up over 300%!

I suspect that is unlikely with the increased need for housing.  

The average increased from $326,908 in 2023 to $352,257 in 2024.

Interested in any services to apply for an appeal on property tax increases as well.

Possibly; but there's nothing out there from recent years associating it with any actual increased risk. 

He usually buys in C neighborhoods and has to do heavy rehab, but he's a construction guy that also runs his own property management company, so it's 2nd nature for him.

Your not correct under many different circumstances.First property tax is 1.1% (fairly safe) with 2% annual increase (prop 13).Next expenses include a lot more than property tax and interest. 

The city is working on getting a a ferry to NYC which should increase rent / appreciation.

It's completely off-the-grid home, very funky in a nice way... everyone that's been there loves it and I think it would appeal to outdoorsy/environmentalist/nature lover kinda folks.

Increase earnings, decrease expenses, save up, and then you can invest.