Build second home on multi-family lot that already has one house?

[John Einarsen]

Hi All,

I am brand new to real estate and am looking to house hack instead of rent. I want to buy a single family on a lot zoned for multi-family (e.g. up to 2 units) and live in one portion while renting out the other. Is this a good idea? Here is an example of a property that might work:

https://www.redfin.com/CA/Los-Angeles/8342-Reading...

The city told me that the imaginary second unit can be 32'x27' and up to 33 feet in height. I'm thinking of doing a pre-fab home to minimize the cost to carry the property before it can be rented out. Can anyone help me analyze this scenario?

Thank you in advance!