No person, firm or corporation, either as contractor or sub-contractor, shall construct, alter, remove, demolish, or commence the construction, alteration, removal or demolition of any building or structure or shall install any equipment for the operation of a building or structure without first filing with the Building Inspector, an application in writing and obtaining a formal license in conformity with this chapter. An exception to this license requirement shall be a homeowner and/or a landlord performing their own labor on property owned and/or occupied by said owner. (Ord. 14, 1994. Passed 4-4-94.)