If you own a building constructed prior to 1986 or have never been inspected, it may contain asbestos.  The OSHA regulation 29 CFR 1910.1001 requires owners to know the condition of asbestos in their buildings and notify their tenants, vendors and/or employees about presence of asbestos in the building and their locations.  If you are planning a renovation or demolition, EPA regulations under National Emission Standards for Hazardous Air Pollutants (NESHAP), 40 CFR 61, Part M require you to inspect the building for presence of asbestos before any renovation or demolition is performed.  Also, all asbestos must be removed prior to demolition of any building.  For renovation, if asbestos is affected, they must be removed as per the regulations.  Know the extent of asbestos in your building prior to the start of work.