Any person, firm, company or corporation owning, controlling or managing any building, structure or premises therein or whereon there shall be placed, or there exists, anything in violation of any of the provisions of this chapter, and any person, firm, company or corporation who shall assist in the commission of any violation of this chapter or any conditions imposed by the Planning Commission, or who shall build contrary to the plans or specifications submitted to the Planning Commission and certified as complying with this chapter shall be guilty of an offense and subject to a fine of not more than $500 or imprisonment for a term of not more than 15 days, or both such fine and imprisonment. Every such person, firm, company or corporation shall be deemed guilty of a separate offense for each day such a violation, omission, neglect or refusal shall continue.