Editable terrain during the game

hi, we are developing the game which have free building system. I want edit terrain during the game.For instance , make higher part of terrain or lower and flatten ground because player should able to build houses free. Is that possible ? if yes, what steps i must follow

Unfortunatelly, you can’t edit terrain in runtime. Please visit https://forums.unrealengine.com/showthread.php?10457-Editable-terrain-in-game. There you can find some information about voxel terrain, which should be suitable for you.