Assuming it is not permitted, to me there isn't that much value in the addition.

Was it an addition, remodeling or something else?

Does the survey reflect the new addition? 

I was quoted an up front fee (~$2000) to retitle everything into the trust including eligible investment accounts in addition to my real estate and then a $500/yr maintenance fee (not sure what the purpose of this fee is).  

Things to look for are low rents, kitchen remodel, addition of a bathroom/bedroom, amenities that tenants want.

Something to be aware of though is depending on the flat fee service provider you're using, they may require additional documentation.

and the duplex has an additional lot next to it with an RV on that extra land? 

Additionally, review your lease.

I’m working with a property in Brown County, Indiana that is fully approved for STR use under current regulations and has a documented operating history ($70k–$110k gross; ~$450 ADR).Zoning restrictions prevent adding additional rental units on the parcel, so this is a single-asset STR where value is driven by privacy, acreage, and guest experience rather than scale.Curious how other STR owners think about long-term value and defensibility in markets where zoning has tightened significantly.Appreciate any operator insight.

The numbers check is simple if 340 a door prevents even one deductible hit across the property over a couple years it pencils, but only if install and ongoing monitoring are tight and you can show fewer claims or fewer incidents.