Was it financials, physical, or environmental that you found.

From an operations stand point, make sure the quote from the contractor includes — full containment and HEPA filtered negative air movers that ideally can exhaust to the exterior, manometer with print out logs documenting the containment’s negative pressure throughout the mitigation, full removal of affected materials (drywall, baseboard), (wood framing can sometimes be sanded and then sprayed with a spor/fungicide), and finally an *inspection by a third party environmental hygienist for air clearance*.

But a few more years of the current governments so called environmental policies and the US will not look much better!

The EPA has so many environmental regulations that is very expensive to get around.

They will list the required environmental/home set up. 

You'd still be able to get a Letter of Environmental Protection to rent to families, but it basically says that you did illegal work, got caught, then had to hire a professional to fix it.

There’s also entitlement risk – the chance that government agencies with jurisdiction over a project won’t issue the required approvals to allow the project to proceed; environmental risks that range from soil contamination to pollution; budget overruns and more, such as political and workforce risks.Location is another idiosyncratic risk factor.

You should be able to get it through, but the lender will probably require some environmental "stuff" because of the cleaners.

Great realtor to back into values2. builders to get idea of vertical sq ft costs3. land planner/ engineer for the city county state permitting process.So I find out the big rocks.. then hone in a property that seems good.put it into contract .. then I hire a consulting engineer land planner to do a feasablity study.. if your an existing bigger client they usually do them for free .. in exchange to get your work.but most likely you will have to pay for it.. 5 to 10k is what you can expect.this will include what needs to be done for regulatory approvals.will include environmental hurdles IE who you have to hire / do yo need a wetlands study etc.basic take off on infrastructure costs..

Comparing the NY & FL markets you also have other elements like heating and snow removal which usually fall on the landlord.