Land purchase to build: Custom or prefab

[Chris Morgan]

I recently purchased a duplex to house hack with an empty double lot next to it. After living here during the renovations I realized that I have to walk through the empty lot to bring my trash can to the front for pickup and lawn mower for yard maintenance. I was wondering what route I should take on building on the land, prefab or custom. I'm going to buy and hold, put a sidewalk between the two so whoever rents my first purchase can get trash and appliances and the such through. Trying to get a good estimate on costs with both... Property is in Northside, OH and I talked to the owner of the land. Motivated seller that wants to get rid of it. Please help!