Buy an existing home period. There are a jillion and though I agree with the codes and skimping etc, one thing is for sure, you can have an existing home Inspected, you have an agent and attorney helping you-you know the end result, you can begin your Costa Rica dream, and, you won't be 3/4 the way in and get hit with this and that and these and those. I've bought and sold many homes over the years, there is always risk but in the states, could get a home built in 90 days, Costa Rica more like years and a lot can happen in years. However, if you insist on building one thing I can say over all my research and experience is when it looks feels and seems too good to be true it most definitely is. After going all over Guanacaste and seeing different developments, talking to people and reading about “failures” if one fails to launch and they advertise years of success instead of just being genuine and transparent, you can pretty much assume you're not the exception customer and are heading into dicey territory. The company we dealt with advertised world class homes, luxuries, hundreds of homes sold, nine “phases”, world renowned architect, number one development in Costa Rica and on and on and one tour could tell you that 14 years only brought lots of sales and few homes, which are occupied by staff, investors and friends. They are now building in the “backs” of lost dreams; sound like a community you'd want to live in? You won't even know what it will be like for many years- not worth the risk unless you just want to rent your place to them for discovery tours. Good luck!