To address this I took detailed pictures from beginning to end of my most recent flip, documenting that we did a thorough job using quality materials.   

I know it's over your budget, but is this the kind of property that would interest you: https://www.realtor.com/realestateandhomes-detail/194-Joliet...?

The biggest detail is look for a nationwide bank that is full delegated with little to No overlays.

The key is a great contractor and a clear, detailed, well-thought-out scope of work. 

Maybe you saw this from the Tico Times already, but it lays out mostly depressing details on getting a mortgage in Costa Rica: http://www.ticotimes.net/realestate/25-mortgage-ti...Please post back here if you find anything!

An investor who is buying the duplex next to mine wants to trade a duplex he owns in a neighborhood nearby so he can have 2 duplexes next to each other (long story no need for those details). 

@Brice Alef-Torrisi To manage finances for multiple properties, maintain separate bank accounts for each property if held under different LLCs to avoid commingling, which could jeopardize liability protection and complicate tax deductions.If properties are under one LLC, using a single account is fine but requires detailed record-keeping for each property.

Read the full report here.https://lao.ca.gov/LAOEconTax/Article/Detail/265California may have had a $9 billion surplus.

Also David Green's book Long Distance Real Estate Investing or BRRR talk about this in detail. 

The best advice I can give you for seeking counsel in online forums is learn how to ask specific questions and provide as much detail as you can.