First Multi-Family Investment Advice

[John DiMaio]

I am looking to expand my rental portfolio and buy land to build a quadplex in northern Delaware. I was looking for any advice from past/current multifamily investors on the best path to take. 

Would it be better to buy sizable land to build additional buildings?

Are there contingencies you can input in a contract if zoning is an issue with land?

Would you suggest prefab or stick built buildings? Pros/cons of each?

What hardships have you faced?

Thank you!