While daunting, your experiences engineering firm and attorney will be able to guide you through the project.  

Based on the information that you shared, if you haven’t already done so, I recommend connecting with a local expert.

Say my neighbor wants to buy a 1 millimeter strip of land along our shared property line for 450k. 

I’ve had a great experience with Brian Hartsell at key properties for my vegas properties. 

Multi-family properties often take longer to sell in my experience. 

@Sean GammonsConsider adding a partner for the second deal to share the down payment and mortgage responsibility, keeping DTI manageable.

Chances are this is NO deal property as the X will want their fair share and a fair market appraisal will need to be done and the equity split equally.   

From leaving my home friends and family I met some really good people and I hoped to share that experience and learn more about realestate in the process How did you find this deal and how did you negotiate it?

A new ADU will cost over 120k to build and will not be appraised close to that from my experience and many other investors I’ve spoken with.

How can I strike a deal where they can still receive some income from the property, but I can purchase the home and make my share and eventually (1-2 years away) own the home and eventually get full profit from this 8-unit property.