The entire project took around 3 months with EVERY square in minus the electrical( some added) being gutted and renewed.

Does price per square ft factor or is it just ARV.

It’s all about finding a balance between purchase price, financing terms, and smart rental management so you’re not forced into the red.

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

Also, real builders/experienced developers will often have a true technician, i.e. a civil engineer, architect, real estate attorney et al at least glance at the property info to make sure there are no major red flags.

I'm seeking opinions and examples of per-square-foot costs for constructing new multi-family developments in NYC. 

Qualify the contractor and highlight the benefits of working together which would include consistent work for them and regular paycheck.Personally, I'd buy the materials and never pay any money upfront, a "red flag" on its own.

The labor it takes to renovate 1000 square-foot property is typically the same depending on the finishes whether the house is going to be worth 500 K or 200 K.

I think most hosts give 5 stars unless there is a serious issue so even a 4 star is a red flag for me that I would check into. 

When I sell it I will be back at square one, no harm no foul.And I do mean WHEN I sell it.