You remediate the exact problem - mold comes from water leaks/intrusion - and forget about the rest of it.

The specific units I'm looking at are 1 BR/1 BA with a water view and poolsCan sleep anywhere from 2-6 with the addition of a pull out couch and a small bunk area for families$220K (Unrenovated) - $250K (Renovated) Similar units in the same building rented for $29K (this year) but "Closer to $36K in a stable year" (per management) My guesstimated costs will be $1500-2000 monthly using a 10% down vacation home loan, I'm considering using this management company at 26%The location is Tybee Island, Georgia.

If you can put mobile homes on your land, then you'll have to start figuring in costs to acquire the homes, pay for the move, and hook ups (i.e. water, electrical, gas, etc). 

My wife has stories of washing dishes using a large tub, and taking cold showers with water borrowed from our neighbor's hose, during the time our water was off to redo the plumbing!

Hiring tenants to do work has potential to muddy the water when things do work out according to plan. 

Ian Waters

I have the option to put solar and hot water on the roof of my new build.

One month is too long to wait for repairs to a refrigerator. 

What might be concerning is that labor, appliances and systems e.g. furnace, water heater, etc. probably cost about the same for a $50k prop as they do for a $350k prop.

I looked at a bunch of crumbling row-houses in Baltimore today, and many of them had crumbling and cracked brick, rotted foundation, water damage and squishy floors about to give in, and signs at the door saying the place needs to be rehabbed or boarded within 30 days because of code violation.For a typical row-house that's 12 feet wide and 3 floors in Baltimore city, how would it typically cost1A.