With new construction and renovations going on, on almost every block.

Because until you understand the specific niche of investing you want to get into, you won't understand what concrete steps you need to take. 

If you are trying to do this in Newark, you need to know the market of that particular set of blocks so you don't overdevelop for the farm area.

It wouldn’t even be listed on Airbnb during this period so I wouldn’t get dinged by them for blocking the calendar.

Detroit is a great city to invest in one just has to be aware that is is a block by block city and to be careful

At yet another sale there was a brick row house/town house for sale that looked good from the street, but since it was in the middle of the row, to see the back of the house, you had to walk around the block and see the house from the alley, where the entire 3 story brick back wall of the house was laying in the back yard, and there was no back wall standing. 

In my basements tenants have access to they totally disregard the access required and block the pathways needed for access.

Try to talk to a lender or two to get a real concrete idea of what you can do.

For Airbnb, do i allow STR stays for the next three months and then block out the calendar beyond 3 months for MTR stays?  

The City of Detroit is block-by-block in many Class B & C areas.In our opinion, zip codes cover too large an area.We use Detroit Neighborhoods, which are much smaller than zip codes.