Upon notice from the Enforcement Officer that any subdivision is being constructed contrary to the provisions of these regulations or contrary to any approved plans, being maintained contrary to the provisions of these regulations, such violation shall be stopped immediately. Notice shall be in writing and shall be given to the owner of the property or his or her agent, or to the person so developing the property, and shall state specifically the regulation or approved plan being violated. Said notice may be given by registered mail to the person so developing the property after two reasonable efforts personally to serve the notice have failed.
(LDC § 7.10(C))