If your building from ground up realize that unlike conventional multi family every bedroom has a bathroom. So if your building 20 4 bedroom units your putting in 80 bathrooms.
four bedroom units make you the most most money per sf. In Atlanta I renovated a student housing property and they were getting $850 per room a month.
Do you plan on managing the property once it’s built? Also realize every year you have to turn all the units and these kids are hard on these apartments.
The big thing is also to rent fully furnished units. kids nowadays just want to move in, mattress have to be legally changed out within every five years.
The new thing that’s getting popular especially in expensive markets are call micro units. Each unit is about 200sqft, just a small bath and not a full kitchen. Something else to look into.
Most of my business is student housing renovations lmk big you have anymore questions. I can send you my number if you’d like to connect more and pick my brain.
Good luck