This figure includes the construction of the building but excludes land acquisition, permits, and other associated costs.Cost per Door (Unit)The cost per door, or per unit, in affordable housing projects can also vary widely based on the specifics of the project.Average Cost per Unit: Recent affordable apartment buildings built using public funds, such as Metro housing bond dollars, have cost between $412,000 and $522,000 per unit.

We really can't tell you anything based on the information offered, it depends on local laws, costs, rents, materials, permits, etc.....

There is money in buying raw land and getting it permitted for build with plans and flipping it shovel ready 

I will look into permits etc.

How were the prints approved without permits?

He said contacting the lender is critical because the sale can only go through if they permit it  And they may have additional fees. 

That permits you to easily transfer the bills if the unit becomes vacant and monitor that each tenant is actually paying the bills and keeping the property in working order so to speak.  

Rehab permit required2.

I've got a 2nd floor detached garage build i'm in the planning/permitting stages of here and looking for advice to see if any key features need added.It will have its separate entrance from main garage which will be utilized by main house STR for a game room eventually.

For example, a job with a builder will expose you to lots of things: land acquisition, new construction, renovation, trade experience and contracts, financing, permitting, etc.