First Development Project

[Jordan Elijah]

Hello all, 

I am working on my concept for my first development project for an apartment complex on the outskirts of Phoenix,AZ, I have a background in fix and flips I was also a licensed realtor few years back. I need some insight on the steps from concept to the financial proposal to a lender, I understand that I need to compile together a complete cost of construction analysis etc. but what about visual concepts? Do I need to hire a designer to get a "rough draft" for the banks to see or do they just need numbers along with a detailed description on what it is and the cost of it? 

Thanks in advance!