2-4 -6unit out of ground in washington dc N.e cost

[Ahmed Porter]

I have a two lots of family property and I want to put a four-unit on the property the area thinking a  4 unit a 20x 80  each unit 20 x 40 not sure what cost will run me so I can get funding. I am thinking 2 unit with the bottom being commercial and top rental are a four-unit are a six-unit if I can get the funding. I have no ideas what it will cost maybe two bedrooms two baths with deck for each unit thank you . the lot is clear with no unity  ran to the area.