With a new build, the depreciation on everything is in sync and just starting. So you do not have to start with as large capital reserves.
Homes built now can more closely reflect current trends and demands than homes built in the past.
The lack of new housing in the American market compared to what the demand was for the last decade has created a demand for new housing that will take quite some time to fully fill.
This can be attributed to lower competition as a majority of the rental inventory out there is not housing stock.
Build to rent is a scalable investment. You could build a single family residence on a single infil lot, or develop an entire subdivision for build to rent.