Any development, building or structure or accessory building or structure constructed, altered, added to, modified, rebuilt or replaced or any use or accessory use established after the effective date hereof in violation of the provisions of this title, by any person, firm, association, corporation (including building contractors or their agents) shall be deemed a violation. The building inspector shall refer violations to the municipal planning agency and the city attorney who shall expeditiously prosecute such violations. Any person, firm, association, or corporation who violates or refuses to comply with any of the provisions of this title shall be subject to a forfeiture of not less than twenty five dollars ($25.00) nor more than one hundred dollars ($100.00) per offense, together with the taxable costs of such action. Each day of continued violation shall constitute a separate offense. Every violation of this title is a public nuisance and the creation thereof may be enjoined and the maintenance thereof may be abated by action at suit of the city, the state, or any citizen thereof pursuant to section 87.30(2), Wisconsin statutes. (1975 Code Ch. 23 § VII)