Is it useful to visit completed buildings before evaluating a new project · for a young family?

I am opening this topic to collect practical questions and experiences from the community. I want to compare verifiable information, read the contract carefully and separate personal expectations from guaranteed conditions. What would you review, and which document or data point would you request before moving forward? The goal is to leave useful answers for local and international buyers researching apartments, off-plan projects or financed options in Asuncion.