Full Description from the city package (City of Rancho Santa Margarita):
Notification Map and Mailing List Instructions
Listed below are the requirements for public notification of nearby property owners in connection with planning applications for public hearings as determined by the city:
Preparation of the “Notification Map.”
Obtain the Assessor’s Parcel (APN) number(s) from the County Assessor or tax bill for the property concerned. Locate the subject parcel on the proper page of the Assessor’s map books. With the scale shown on the APN map, measure 300’ line on all APN pages. DO NOT INCLUDE STREETS IN THE 300’ RADIUS.
If the maps are the same scale, the most convenient method of determining the notification areas is to “cut and paste” the maps together so that the subject parcel is in the center and all parcels and their numbers within 300’ are clearly shown. Some adjustments may be required when maps are of different scales
Compilation of the “Mailing List.”
A “Parcel List” is then prepared by noting the APN numbers of all parcels which are within the 300’ notification area. The numbers are to be listed in ascending numerical order with the subject parcel number at the beginning of the list.
The “Mailing List” may be properly prepared in two ways: Type the APN number, owner’s name and address for each parcel as obtained from the Assessor numerical parcel list. A copy of the list is required.
You must certify the accuracy and completeness of the list through owner or agent signature in the appropriate box. An incomplete list, discovered after a project is approved, may negate such approval. Add name and address of Agent (if any) to the end of the list.
*NOTE - stamped envelopes are NOT INCLUDED. If you would like Express Mapping to prepare those for you, please email for a custom quote based on the exact count for your job.
Submittal to the city
The notification map, mailing list and envelopes (included in custom quotes) shall be submitted to the City by the applicant at the time of filing.