So you can buy a four flat, live in one unit and rent the other three, but you have to live in one unit on the site. 

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. 

Also, I'm not sure how you're paying attention to it on the tax side, but the unit that you are living in's profit at sale is calculated differently than the other unit that you're renting out.Once you move out, that unit is officially available for rent so from that point forward, any profit gained at future sale will be calculated starting from that point and will be taxable.

Often the unit looks terrible when you’re showing it and is a waste of time.Most owners expect a property manager to work 24 seven but are only willing to pay them six cents to ten cents on the dollar.

Do NOT set up 1 account for multiple units. 

On the upside, this is the United States, and it's only money.

My unit is located by Rose Medical.

Investment Info:Small multi-family (2-4 units) buy & hold investment in Bronx.

If you have a 20 year timeline, I'd probably recommend B areas closer to the city or in the better school districts in the suburbs for the highest combined ROI over that time period.Right now you can expect to find decently turnkey multis for about $60-$125k/unit usually all at least hitting the 1% rule in that range.

I am 67 and retired as one of the top Business Development entrepreneurs in the United States so this is a fun way to give back to the industry while changing it at the same time it needs it.. and it is that simple. .