Down Payment Assistance

[Tommy Jech]

I recently have been looking at purchasing a duplex or SFH in which i can live in half and rent out the other. I talked with my realtor he mentioned there is such thing as down payment assistance where you get a loan that helps cover the down payment and closing costs. This can either be paid off through monthly payments similar to PMI or else it can be held in an account and paid off in full when I sell the house in the future. Just curious if anyone has done this/used this and how it affected your numbers when trying to cash flow on the property.

Thanks!