All plans must have section explaining how materials will be removed from the building for reuse prior to demolition.
You must allow sufficient time to allow reuse activities to take place. Most reuse/deconstruction places should be contacted at minimum two weeks before demolition is set to begin to allow them time to gather staff and perform their work and reclaim usable materials.
Most contractors choose to work with Dane County Habitat for Humanity to remove and reuse materials. Items like doors, cabinets, and many other items are often able to be salvaged. Even if a project appears to have few reusable items, contacting Habitat for Humanity is wise. Too often people undervalue reusable items and furnishings.
Deconstruction, INC. is a local for-profit company that also works with architectural salvage and similar materials.
Other donation options for usable items may exist locally, too.
In your plan, you must state who you are working with and what items are being reclaimed for reuse.