I am going to be selling off a few of my buy and holds and buying a new home so I figured I’d ask because I couldn’t find any concrete answers.

I worked for State of XXXX reviewed design and issue permits if they are compliant. 

The internet is made of 0s and 1s whereas real estate is made of concrete, glass, metal, wood or other tangible materiel.

If you have concrete proof that the tenant has or had other people living there at your property that are not part of the rental agreement, you should do your diligence and find out how much longer the tenant has on the lease.There are options that you can use, like, eviction process or not renewing the lease.

Its reflected in Dodd-Frank, ADA, Fair Housing, local eviction laws, Etc - all of these came about because of a small group of people abused others to such an extreme level that the gov't swoops in and decides protections are needed and they go to the opposite extreme in their policies.

There are several types of fall back positions that you can use in a pinch as well including - pocket listings, fractional 1031 compliant properties, and also the option of simply not completing the 1031 and eating the tax. 

Even if the building is newer and everything is in great shape, if you plan to hold it for any length of time you'll need to set aside CapEx reserves for expenses such as furnace and/or A/C replacement, roof replacement, driveway and other concrete replacement, etc.  

Congratulations. not sure on the floors we have been using real bamboo  and in our other high end home it will be heart of pine.. not familiar with Houzzcabinets were ordered  counter tops were custom concrete though.. house is 4 stories and what makes it special is it will be the last one built that can be that tall in that area they changed the code right after we were permitted Charleston is challenging you need the height to get the sq ft in the house that house is still only 1700 sq ft.. you have to build up out of flood zone in that area so you cant go under and first level has to be parking so now you can only do two floors above garage.. and because the lots were created back when the US was created basically they are all tiny 20 to 30 feet wide 50 to 80 feet deep.. so it going to be interesting going forward.. basically going to be pretty tough to have anything over about 1500 sq ft.

Since it has no basement will need some concrete excavation but probably no more than a few feet where each bathroom is.  

@Andy RouschThere are so many factors involved, that it'd be tough to answer this question concretely.