In case any building or structure is erected, constructed, reconstructed, altered, repaired, converted or maintained, or any building, structure or land is used in violation of this chapter or of any regulations made pursuant hereto, the Board of Supervisors, in addition to other remedies provided by law, may institute any appropriate action or proceedings, whether by legal process or otherwise, to prevent such unlawful erection, construction, reconstruction, alteration, repair, conversion, maintenance or use, to restrain, correct or abate such violation, to prevent the occupancy of said building, structure or land or to prevent any illegal act, conduct, business or use in or about such premises.