Experiences with ADUs: manufacturers, budgeting, str vs ltr, etc

[John Hurley]

Howdy folks. 

Looking to cash-buy an ADU and put it behind a home my family owns in Ft. Lauderdale. I'm looking for a turn-key company that can handle the paperwork and put it in the ground for a flat price. I was wondering if anyone has any suggestions re: companies to work with? With the uncertainty in the economy right now I want to do this with cash (let me know if I have that wrong), and would like to do this for around 45k and under. If you have an ADU, how has it performed compared to your financial projections? I'm looking at properties on Airbnb and using sites like AirDNA's rentalizer, and then low balling those numbers.

Any thoughts are appreciated- thanks!