Dead or Diseased Significant Vegetation: Dead or diseased significant vegetation as designated by a certified arborist may be removed.

I want to do this full time to achieve financial independence, despite living with Lyme Disease.

Especially if you have any family history of Brain degenerative diseases like Alzheimer's.

Oddly, or not, the neighbor has no responsibility or liability.....unless this was an obviously diseased/damaged tree that they previously were put on notice about, which is likely not the case here.  

i think permits for tree removal came about because of concerns regarding spreading of disease.

It is a health issue, flys for instance carry Dysentery, and other diseases.[3] Renters want remodel modifications.

:Health-Related MoveYou meet the requirements for a partial exclusion if any of the following health-related events occurred during your time of ownership and residence in the home.You moved to obtain, provide, or facilitate diagnosis, cure, mitigation, or treatment of disease, illness, or injury for yourself or a family member.You moved to obtain or provide medical or personal care for a family member suffering from a disease, illness, or injury.

One chomp death.Rats are mean and fierce fighters (and DO NOT belong in your home).They carry diseases:https://www.orkin.com/pests/rodents/rats/diseases-that-are-spread-or-carried-by-ratsLet the rodent experts do their job and follow their directions.For instance if they say use covered metal cans do so, and etc...If the rats are stuck outdoors due to being sealed out, they will just be out there in the wild like squirrels.Just my 2 cents.

Are there mini-split installers in your area that can work up high on your buildings top floors.What about heat and hot water, how will that be handled.Can the buildings existing plumbing and the line(s) to the main street waste line handle the bathrooms  and kitchen sinks (1952 lines might be cloggy and an endless source of complaint) have sewer scopes been done to see what they look like.Will you be required to put in fire escapes (as well as other modern fire equipment)--has that been budgeted for.Have you talked about tax abatments yet with the governing authority.Does the area show a shortage of apartments, or will it take a long time to fill units when they turn over.Hows the roof (and the real roof underneath--the wooden one), how many layers of roofing are on it, how many can be on it and still get financing.Does it have some unique history, ie. did Frank Sinatra always stay there, people think its haunted, once owned by the Beatles, etc..Who was the last Hotel Chain to Flag it and why did they shut it down (Legionaries Disease, poor economy, expensive structural issues, etc...)Just my 2 cents. 

An example would be having an arborist look at all the large trees on your properties to ensure they're in good shape, not diseased, and well maintained (pruned back).