The Natural house is built by upgrading an existing Desecrated house with 1 mahogany plank, 2 buckets of water, 3 supercompost, and level 92 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, 10 Mahogany planks, 1 limestone brick, 2 buckets of water, 3 supercompost, and 1 Magic stone if building it from scratch.