My property is still under-performing."

Thank you for you time and help I would connect with a few local real estate agents and property managers in Cambridge that can pull accurate comps and tell you can compare your cost to build vs sale price. 

Lenders are now recognizing ADUs more accurately, especially as national programs like Fannie Mae and Freddie Mac incorporate them into their guidelines.

So we can't see the list but I will say that AirDNA can be accurate or not depending on the area.Like any algorithm, the more data points, the more accurate it will be (relatively).I find it to be quite optimistic.

Is this accurate?

Anyone have any advice on how I can accurately value RV Parks and Mobile Home Parks?

Is there one place to locate the accurate information by County within the State and by city within the County??

This should simplify your approach and help you avoid legal issues for failure to perform under the contract.

Also, what other platforms are people using for rental price comparisons and have you found them useful/accurate to help you rent your home in a reasonable amount of time?

Now proper accounting is still important because bookkeeping is the first and best tax strategy for most people but there was a huge time difference in the services performed.