The house is on peer and beam, not a concrete slab. 

I pressure washed off the black moss on the brick in the back of the house and back patio along with all other concrete surfaces which made it look new.

But if the law is already on the books, I'd rather go ahead and become fully compliant now, as soon as I start my first STR in Atlanta.

It is sturdy, with steel beams siting on top of the concrete blocks.

On a larger park, I would recommend a formal cost segregation study for this, but an 8 unit park is too small for that to make sense, so you can also assign a value in the bill of sale to include:Landscaping shrubbery & trees: 35 mature trees approx. 20’ tall each, pool equipment, roads: XXX square yards of asphalt paving, sidewalk and curbing, electrical pedestals, concrete pads, underground utilities for electric, sewer or septic, pool, clubhouse, etc. 

Best way - Jackhammer it out and replace it, this time with adequate rebar and high pressure concrete.....Cheaper way - fill the cracks and paint it with deck paintCompromise - Lay tile on top (if you feel it's done moving)

@Peter MorganI am confused - you have a concrete balcony? 

You’ll need some code compliant (architect) plans before you can get any kind of accurate pricing. 

An area of concern is the front concrete steps.

You can let them know your house rules but if someone throws a fit or is non-compliant it may be best to endure it if it is not too bad and look at replacing them when the lease is up.