Here's a bit more in detail about how rates are calculated for DSCR loans:1.

How much detail are you wanting:In Renovations, this can be anywhere from $30k to $500k, depending on properties needs, scope of work, scale of finishes, access to labor, etc.

Until you learn to estimate yourself, based on your local costs, any estimate will probably be off.

Added to the items I put which is more detailed and arcuate!  

I would recommend flying out there, getting to know the area on a detailed level  and talking to local investors (someone not trying to sell you anything).

I think the estimates are crazy low.A $3200 rental is going to be a nice place, not something with garbage paint on the walls.

The rehab estimate seems very low and the ARV seems really high in my opinion, just based on a tiny bit of research looking at what this property was listed for recently (it hasn’t sold), and what the surrounding similar properties are worth (~$250k).

My realtor found the city building inspection report which details that the unit needs to be de converted as it cannot be brought up to code.

You just really need to know the street by street details.

Once you get the deal under contract, your RE attorney will also run a detailed title search to uncover anything else of importance.