Our utility has been cutting power every time there is a red flag fire danger her now because of that, and they are also rapidly replacing old poles and requiring new lines to be buried etc. to avoid getting sued like PG&E did.

I'm an American but I own 2 properties in Porto.

I think most hosts give 5 stars unless there is a serious issue so even a 4 star is a red flag for me that I would check into. 

It would be a big red flag to me if they are doing a lot of volume in this market. https://www.biggerpockets.com/member-blogs/10145/83067-limited-partner-s-guide-to-investing-in-the-right-deal

The red flag here for me would be the willingness to overpay when they’re not bidding against anyone.

Bonus depreciation is just a special part of the US tax code.It allows you to take accelerated depreciation on portions of your property depending on when an asset is put into service.At the time of this writing, you can write off a huge portion (60% in 2024) of many qualified components that have a useful lifespan of 15 years or less.That means a certain percentage of things like landscaping, sidewalks, latches, appliances, fences, certain flooring, etc is depreciable in year 1.The bonus depreciation rate percentage changes yearly depending on the administration and the tax code.For years 2015 through 2017 first-year depreciation for all the items on a 15-year schedule or less was set to 50%.It was scheduled to go down to 40% in 2018 and 30% in 2019 and then 0% in 2020.But then Trump got elected, and he enacted the Tax Cuts and Jobs Act.That moved the bonus depreciation percentage to 100% from 2017 to 2022.In 2023 it went down to 80% and it’s currently at 60%.Depending on who gets elected again, 100% may be back on the table.Only time will tell.We know that the US government wants to incentivize more development and ownership of RE.They want Americans to continue to build and maintain our physical world.That’s why real estate is one of the most tax-advantaged assets in the US.Depreciation and bonus depreciation for RE are very positive and will likely continue in the years ahead.

I definitely ended up passing on this "deal" based on the red flags.

Also, real builders/experienced developers will often have a true technician, i.e. a civil engineer, architect, real estate attorney et al at least glance at the property info to make sure there are no major red flags.

I'm a 77-year old widow on fixed income, an Asian-American with a special need son. 

American Housing Survey 2.