Corner Perpetuation Filings (CPF’s)

Compliance with Idaho Code Title 55 Chapter 16 is required on all plats and Records of Surveys.  All CPF’s are recorded and given instrument numbers by the Ada County Recorder.  The actual documents are filed and kept by the Ada County surveyor.

The Ada County surveyor maintains a web site with free updates of images and a searchable database of corner records, available to the public for the most current CPF’s filed in Ada County.  For additional information, check out the Ada County Survey Web.

Review

·        Is the CPF instrument number shown on the plat the most recently filed instrument and are the instrument numbers shown correct?  While we do at times accept an older CPF instrument number to be shown on the plat, as opposed to the latest, the ties shown on the two instruments will more than likely be the same.  If the ties are substantially different, then the newer CPF will be required if it is still valid.  Otherwise, a new CPF will have to be filed.

·        Are the CPF instrument numbers labeled on all of the Public Land Survey corners?  While the CPF’s are not required on 1/16^th corners that are shown on a plat, if all of the elements of a Record of Survey are to be included in a plat, why would you not show it anyway?

·        Does the monument that is described in the CPF match what is shown on the drawing?  If the CPF describes an Aluminum Cap, and the plat shows a Brass Cap, which is correct?

·        Do the conditions and ties shown on the CPF look different from any details shown on the plat?  If the CPF describes ties to a corner that do not appear to be shown the same way in a detail on the plat map, file a new CPF.

 

References: I.C. 50-1303, I.C. 50-1304

Last Revised: 11/30/2006 11:13 AM

 

Figure 1 - Ada County CPF and GCDB Index Grid

Corner Perpetuation Filings (CPF’s)

Compliance with Idaho Code Title 55 Chapter 16 is required on all plats and Records of Surveys.  All CPF’s are recorded and given instrument numbers by the Ada County Recorder.  The actual documents are filed and kept by the Ada County surveyor.

The Ada County surveyor maintains a web site with free updates of images and a searchable database of corner records, available to the public for the most current CPF’s filed in Ada County.  For additional information, check out the Ada County Survey Web.

Review

·        Is the CPF instrument number shown on the plat the most recently filed instrument and are the instrument numbers shown correct?  While we do at times accept an older CPF instrument number to be shown on the plat, as opposed to the latest, the ties shown on the two instruments will more than likely be the same.  If the ties are substantially different, then the newer CPF will be required if it is still valid.  Otherwise, a new CPF will have to be filed.

·        Are the CPF instrument numbers labeled on all of the Public Land Survey corners?  While the CPF’s are not required on 1/16^th corners that are shown on a plat, if all of the elements of a Record of Survey are to be included in a plat, why would you not show it anyway?

·        Does the monument that is described in the CPF match what is shown on the drawing?  If the CPF describes an Aluminum Cap, and the plat shows a Brass Cap, which is correct?

·        Do the conditions and ties shown on the CPF look different from any details shown on the plat?  If the CPF describes ties to a corner that do not appear to be shown the same way in a detail on the plat map, file a new CPF.

 

References: I.C. 50-1303, I.C. 50-1304

Last Revised: 11/30/2006 11:13 AM

 

Figure 1 - Ada County CPF and GCDB Index Grid