Disposing of asbestos siding varies from state to state, so you’ll have to check your local regulations. In some states, asbestos siding can legally be disposed in any landfill, just like any normal construction waste.
In other states, asbestos siding must be disposed of in only certain designated waste disposal facilities, and they must be notified to come pick up the asbestos siding, which itself must be properly prepared according to state guidelines.
Long story short, check your state and local guidelines. Don’t assume that disposing of asbestos siding will be extremely expensive and require tons of permits, but also don’t assume that you’ll be able to crat it off to the local landfill, either.