Yes, people from the US always say concrete is expensive and wood is cheap. And unless you are designing a tent (by the way, zinc is way cheaper than wood for a tent), only people from the US say that.

There's something distorting your economy. Concrete is incredibly cheap as a material, extremely prone to use in a large supply chain, and requires way less labor than wood.

You make houses siting over finely built wood lattices... how much do you pay to the people building those? Because I can't imagine it being justifiable with Brazilian salaries.