Gov. Code, § 56157

When mailed notice is required to be given to:

(a) A county, city, or district, it shall be addressed to the clerk of the county, city, or district.

(b) A commission, it shall be addressed to the executive officer.

(c) Proponents, it shall be addressed to the persons so designated in the petition at the address specified in the petition.

(d) Landowners within the affected territory, it shall be addressed to each person to whom land is assessed, as shown upon the most recent assessment roll being prepared by the county at the time the proponent adopts a resolution of application pursuant to Section 56654 or files a notice of intention to circulate a petition with the executive officer pursuant to subdivision (a) of Section 56700.4, at the address shown upon the assessment roll and, in the case of commission proceedings as defined in Section 56028, to all landowners within 300 feet of the exterior boundary of the property that is the subject of the hearing, at least 21 days prior to the hearing. This requirement may be waived if proof satisfactory to the commission is presented that shows that individual notices to landowners have already been provided by the initiating agency. Notice also shall be either posted or published in accordance with Section 56153 in a newspaper of general circulation that is circulated within the affected territory 21 days prior to the hearing.

(e) Persons requesting special notice, it shall be addressed to each person who has filed a written request for special notice with the executive officer or clerk at the mailing address specified in the request.

(f) Registered voters within the affected territory, to the address as shown on the most recent index of affidavits prepared by the county elections official at the time the proponent adopts a resolution of application pursuant to Section 56654 or files a notice of intention to circulate a petition with the executive officer pursuant to subdivision (a) of Section 56700.4 and, in the case of commission proceedings as defined in Section 56028, to all registered voters within 300 feet of the exterior boundary of the property that is the subject of the hearing, at least 21 days prior to the hearing. This requirement may be waived if proof satisfactory to the commission is presented that shows that individual notices to registered voters have already been provided by the initiating agency. Notice shall also either be posted or published in accordance with Section 56153 in a newspaper of general circulation that is circulated within the affected territory 21 days prior to the hearing.

(g) Pursuant to subdivisions (d) and (f), if a landowner or landowners and registered voter or voters are the same individual or individuals, only one notice is required to be mailed.

(h) If the total number of notices required to be mailed in accordance with subdivisions (d) and (f) exceeds 1,000, then notice may instead be provided by publishing a display advertisement of at least one-eighth page in a newspaper, as specified in Section 56153, at least 21 days prior to the hearing.