You can use this property to hedge any others that you add that may only cover themselves, or require supplement until they are paid off.HOWEVER, if you have decided that your goal is to use Real Estate as a stepping stone to build wealth by upgrading the property you hold each time (condo to house, house to 4-plex, 4-plex to 8 unit, etc) then I think you are right to sell now while you think the property is at the top of it's appreciation.It will be hard for anyone on BP to tell you what to do as we don't know your goal.You are right. 

Does he want to use the house?

Or once I finish building the house and get the C.O.?

would like to buy the secondary house from myself through my llc, and rent it out, and use the money that I made personally to pay off my primary residence.

The Yale Law Journal article, "Zoned Out: How Zoning Law Undermines Family Law’s Functional Turn," highlights this issue, noting that while family law has evolved to recognize diverse family structures, zoning laws have lagged behind, potentially hindering innovative housing solutions like co-living.Challenges for Co-Living InvestorsFor real estate investors interested in co-living, these restrictive definitions can lead to:Legal Barriers: Difficulty obtaining permits or approvals for co-living spaces due to non-compliance with traditional family definitions in zoning codes.Operational Challenges: Potential fines or legal disputes arising from housing arrangements that don't conform to local zoning definitions of a household.Market Limitations: Reduced ability to meet the growing demand for affordable, shared housing solutions.Advocacy for ReformThe Bloomberg article, "Why Are Zoning Laws Defining What Constitutes a Family?"

We also paid for an inspection on the house & 2 appraisal fees.I called Nick to ask questions and he didn’t like the questions I was asking so called my partner and told him I needed to back off or they’d cancel the deal!

There may be a couple of houses on the block that do not have driveways so this may not be the only one.

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

Detached HousesWhen in doubt, consider the tried-and-true detached single-family house.

Currently, I live in Hawaii, house hacking my own property, and am looking to expand into out-of-state long-term rentals.My goals now are to master the art of wholesaling, continue raising private money, and build a strong portfolio of long-term rentals.