You’re basically running a hospitality biz with guests, cleaners, constant turnover.

My opinion (as someone who has done it) is NO. 1) You gain nothing...a) Realtors will tell you that you get access to the MLS...but that has little value in todays world of Zillow/Realtor/Redfin/Trulia/Etc, b) people think that they will save 3% buyers agent fee, but you can do that without a license 2) You'll need to find a Broker to hang your license with. 3) It will cost you a lot of $$ on a yearly basis.

If someone represents themselves as private lenders, check them on NMLS consumer access to see if they are licensed.

I was wondering whether anyone has any experience or advice as to whether it is feasible to get involved in BRRRR from such a situation, as I am not prepared to make constant flights in and out of America, as it simply would not be compatible with the rest of my life.

They were very accessible and answered all the questions we had.

Florida scares me with insurance issues and constant threat of hurricane damage.

With $400K in equity, a HELOC could definitely give you flexibility, especially if you want to move quickly and have access to rehab funds.

With these factors always being a constant in the realm of lending, particularly short-term investments such as fix & flips and ground up construction. 

What I was able to do with the help of the title company is negotiate a LICENSE agreement to cross and that was good enough for the title company to insure the access..

Quote from @JD Martin: Best idea is just a hardwired on/off switch for controlling anything you want the guests to have access to.