Even a contractor with 30+ years of experience only knows what they know - so, they may not know the most cost-effective solution:(5) Political trends that may lead to more controls on landlords - being forced to accept S8, not being able to deny for evictions, rent control, etc.

A smarter approach would involve thorough market research, realistic projections on occupancy rates, and understanding that not every location is still a goldmine for STRs.

I also know that if I manage the project well, it will come in near the original estimate and at worst between the original and the high estimate.

This takes perhaps a few projects to get the hang of. 

Where are these treehouse projects located?

I see this a lot, and I think there's been so many bad projection tools on the market that the "what did this house earn" is a valid question.For investment properties there is a true number and buyers want to know how that compares to the projections. 

I’ve used Asana for managing day-to-day tasks and projects, and it’s been a huge help in keeping everything organized.

The next issue I think is we want this property for us since we just got the LLC started once the project is finalized we don’t have enough track record on the LLC or as a business owner to get a mortage or refinance the property under a mortage.

A solid financial backing demonstrates reliability, making sellers more likely to accept offers from these investors over others.As fix-and-flip investors build a reputation for professionalism and success, they can expand their operations and take on more significant projects.

We were set-back but able to fix the issues once we returned home and get the project complete.