The most successful strategy land developers use is operating under the radar of public knowledge and consent. If the public isn't informed about plans to tear old buildings down or develop tracts of land then they never have the opportunity to object.
Anyone having or knowing of a building being acquired against the owner's will, to be demolished for purposes other than true "public use" can submit the information for posting at Developer Alert. Check the website, or send an email message to firstname.lastname@example.org. The location can be anywhere in the US.
Developer Alert: http://www.developeralert.org