The rapper was at LAX Wednesday when we asked what he thought about the owner of the property saying he's planning to demolish the crib. Chainz has a personal connection because last year he rented the place -- known as the Eiffel Tower of ATL.

To be clear, it's no longer a trap house and Chainz says that's why it needs to be spared the wrecking ball. He gave us the lowdown on all the good that happened there while he leased it ... including church services and free HIV testing.

Tity Boi says the charitable efforts, as well as countless photos and his own music video being shot there ... make the pink trap house a true landmark.