The Consecrated pet house is built by upgrading an existing Mahogany house with 4 Mahogany planks, 1 Magic stone, and level 70 Construction. This is done by using the right-click "Upgrade" option while in Building mode. Thus, the total materials to make this pet house are 4 Oak planks, 4 Teak planks, 8 Mahogany planks, and 1 Magic stone if building it from scratch.