Building a “Duplex” / SFH with MIL

[Ian Martinez]

I’m purchasing a small property (50’x150’)

And want to build a “duplex” without having to rezone the property.

I have a couple of ideas but I’d like your all’s advice on it. I want to build a main home (1200 sqft) and behind it, I’d like to build a MIL suite or maids quarters whatever you’d like to call it. That second unit would be around 1000 sq ft as well. It would have its own meter and own parking spaces as well. 

Would this be a way to build a duplex under the radar? I’m assuming as long as the city approves of the plans I’d be good to go. But what about any legal issues?