I would say the best thing you could do is just stop in at the bank/credit union you regularly bank with (our regular credit union didn’t have the Absolute lowest rate but the convenience of having money available in the same institution made it worth it for us) - just walk in and say “I would like to talk to someone about a heloc”.

They will help you monitor your credit and provide you with suggestions on how to improve the score.

With BRRRR, we´ve regularly replenished our HELOC so that we can continue investing.

What are general added costs compared to a regular closing?

It is regularly ranked as one of the safest countries in Europe and the world.https://listovative.com/top-12-safest-countries-in-the-world-today/https://www.numbeo.com/crime/in/Tbilisi5.

Because we're frequently on the go, we eat out regularly at fast-food and family restaurants such as Chili's, Panera Bread, and Chick-fil-A.

I mean, on what you are trying to do, I can only imagine you only need a 4-5 regular crew for 70-90 working days. 1-2 might change once in a while but surely 3 will stay the same for the duration of the build.

You must regularly clean the bathtub grout and caulk seams to mitigate the growth of mildrew.

I find that this is binary situation; if they have access, their stuff will eventually find it's way there unless you are on top of this on a regular basis, which is inefficient.   

I do have experience with regular long term renting and it was a horrible experience but that was to be expected with section 8 tenants who tried their best to destroy my former property.