Whenever any officer or member finds in any building, or upon any premises or other place, combustible or explosive matter or dangerous accumulation of rubbish or unnecessary accumulation of waste paper, boxes, shavings, or any other highly flammable materials especially liable to fire, and which is so situated as to endanger property, or finds obstructions to or on fire escapes, stairs, passageways, doors or windows, liable to interfere with the operations of the fire department, or egress of occupants, in case of fire, he shall order the same to be removed or remedied, and such order shall forthwith be complied with by the owner or occupant of the premises or buildings, subject to appeal within twenty-four hours to the mayor, who shall within ten days review the order and file his decision thereon, and unless the order is revoked or modified it shall remain in full force and be obeyed by the owner or occupant.