Preheat your oven to 3500F.
In a large bowl, whisk together the flour, baking powder, baking soda, salt, ginger, cinnamon, and cloves.
In a separate bowl, cream the butter and brown sugar until light and fluffy. Beat in the egg and molasses until well combined.
Gradually stir in the dry ingredients until a dough forms. Divide the dough into two equal parts.
Roll each part of the dough out to a thickness of about 1/4 inch. Use a gingerbread house template to cut out the front and back walls, side walls, and roof pieces.
Place the pieces on a parchment-lined baking sheet and bake for 20-25 minutes, or until firm to the touch. Let cool completely on the baking sheet.
To assemble the gingerbread house, use royal icing to glue the pieces together. Allow the icing to dry completely before decorating.
Use the candy decorations and more royal icing to decorate the gingerbread house as desired.
