The Fire Marshal, his deputies or assistants, upon the complaint in writing of any citizen, or whenever he or they shall deem it necessary, shall inspect at all reasonable hours any and all buildings or premises within their jurisdiction. When any such officer shall find any building or other structure which, for want of repairs, lack of sufficient fire escapes, automatic or other fire alarm apparatus or fire extinguishing equipment or by reason of age or dilapidated condition or from any other cause, is especially liable to fire and is situated so as to endanger life or property, and whenever any such officer shall find in any building combustible or explosive matter or inflammable conditions dangerous to the safety of such building, he or they shall order the same removed or remedied, and such order shall be immediately complied with by the owner or occupant of such premises or buildings.