It is unlawful for any person to obstruct, impede, or interfere with any person lawfully engaged in:
A. The work of repairing, vacating, warehousing, or demolishing any structure pursuant to the provisions of this Title;
B. The abatement of a nuisance pursuant to the provisions of this Title; or
C. The performance of any necessary act preliminary to or incidental to such work as authorized by this Title or directed pursuant to it.