Also if the house needs rehab, how are you going to fund that.Is it deeded separately?   

You may want to get a GoogleVoice number to separate from your personal number.

I am a former NASA robotics scientist... trust me when I say, it IS better because I designed it to be better!

Are there separate mechanicals for each unit?

Quote from @David Contreras: How difficult is dividing land that used to be separate, but is now a large lot as a result of a voluntary merger by the previous owner ? 

HI Henry,You would want to make sure your county allows you to condomize it so that you can two separate parcel numbers for the main house and the newly built DADU/ADU so that you can get appraised separately.

Actually here in Texas we can separate the surface rights from the minerals. 

Using a lower-cost skip tracing service and then a call/mail/sms campaign service separately may reduce your costs.

Is ongoing management charges separated out from pre-ownership services - finding, renovating and furnishing? 

So, they should be accounted for separately.