1. 1. The boundaries of any district organized under the provisions of this law may be changed in the manner prescribed in this section and in section 235.220, but any change of boundaries of the district shall not impair or affect its organization or its rights in or to property, or any of its rights or privileges whatsoever; or shall it affect or impair or discharge any contract, obligation, lien or charge for or upon which it might be liable or chargeable had the change of boundaries not been made.
2. 2. Two-thirds of the owners of real property in an area contiguous with a street light maintenance district organized under this law and not located within any municipality or another street light maintenance district may file with the board a petition in writing praying that the real property be included within the district. The petition shall describe the property to be annexed and shall be deemed to give assent of the petitioners to the inclusion in the district of the property described in the petition.
3. 3. The secretary of the board shall cause notice of the filing of the petition to be given and published in the county in which the property is located, which notice shall recite the filing of the petition, the names of the petitioners, the descriptions of the lands sought to be included and the prayer of the petitioners, giving notice to all persons interested to appear at the office of the board at the time named in the notice and show cause in writing, if any they have, why the petition should not be granted.
4. 4. The board shall at the time and place mentioned, or at such time or times to which the hearing may be adjourned, proceed to hear the petition and all objections thereto presented in writing by any person showing cause why the petition should not be granted. The failure of any person interested to show cause in writing why the petition shall not be granted shall be deemed and held and taken as an assent on his part to the inclusion of the lands in the district as prayed for in the petition.
5. 5. If the petition is granted, the board shall make an order to that effect and file the same with the county clerk; and upon the order of the county commission, the property shall be included in the district, and thereafter a copy of the order of the board and the order of the commission shall be filed with the recorder. The county commission shall proceed to make the order including such additional property within the district as is provided in the order of the board, unless the commission shall find that the order of the board was not authorized by law or that the order of the board was not supported by competent and substantial evidence.

(L. 1947 V. I p. 452 § 21, A.L. 1967 p. 353)