The notice of intention shall be published in the official newspaper of the municipality in three (3) consecutive issues if a daily newspaper, or in two (2) issues if a weekly newspaper or in case no newspaper is published in such municipality then by posting for five (5) days in three (3) public places within the proposed improvement district. A copy of such notice shall be mailed to each owner of property if known or his agent if known, within the limits of the proposed improvement district, addressed to such person at his post office address if known, or if unknown, to a post office in the municipality where the improvement is to be made. Ownership of property shall be determined as of the date of the adoption of the resolution of intent to create. The hearing shall take place not less than ten (10) days from the date of the first of said publications or postings or the date of said mailing, whichever is later.