The owner can designate a host who shall be responsible, and authorized, to act on the owner's behalf to promptly remedy any violation of these standards or the permit.

There are a few different avenues that my clients have been exploring, including getting unpermitted units actually permitted.

If it helps, I've inserted a link to Cape Coral's permitting site below where you can check the status of work progress and inspections. 

Duplex have different zoning that may permit additional units.

You may could give them a license to use the land, provide a temporary or revocable easement or otherwise permit the use in some way.

As an example, we decided to replace the windows in a house we were renovating and ended up costing us $50,000 extra because we got into issues with permitting and suddenly found ourselves having to hire an architect, speciality contractors, etc.  

NYC DOB considers a shelter a 'community facility with sleeping quarters' and may require a special permit for this use.Thanks Abel, You provided me with the right search terms to dig deeper. 

I think he calls it "pre-development" & goes over subdividing, entitlements, permits, etc.  

This stuff will hit you if the things were done without permits..

Applications were being lost, or the website wasn't permitting tenants to fill them out.