I would reinvest in a another property and use a 1031 exchange to detour taxes.   

Is this property in TN?

I don't know what his properties rent for yet but lets assume equal rent to my property.

I recently purchased a property in Fulton County.

@Andreas Mathews admirable, but make sure you do some research so you understand what a PM can make.Starting your own PMC business will require 75-150 doors to make a decent living, depending on gross rents and your fee structre.Working for a SFR PMC as a PM, will require a RE license and you usually get paid a percentage of the gross rents the portfolio of owners/properties you manage generates.

BP has built a great selection, all of them worth reading and that will help you build foundational knowledge.To answer this one: the words from old school investor Dolf De Roos "seldom sell" and you will find a lot of post on BP from people who regret selling properties in the past.

However; two new pieces of legislation were proposed in 2023 to help expand these credits to more areas and extend the timeline of the credits.

Have a frank conversation with the property manager. 

There is an area in San Diego (city Heights) where almost every property has an unpermitted unit.

@Angelo Llamas If your cousin rents out the property, it becomes a rental once it's "placed in service," meaning available for rent, and he must report rental income and expenses on Schedule E.