Practice burns are allowed under section NR 502.11(2)(c), Wis. Adm. Code. Prior to a planned burn, building contents and building components containing hazardous materials (such as asbestos) must be removed. After the burn, the resulting ash should be disposed in a landfill approved by the Department. This applies to ash from any structure, including a single family home.
Remaining brick, stone, concrete, reinforced concrete, and broken pavement may be disposed on-site, in accordance with section NR 500.08(2)(a), Wis. Adm. Code. These materials can usually be pushed into the old basement or crawlspace after the ash and other charred remains have been removed. Waste disposal is prohibited in wetlands, surface waters, and floodplains.