Surveying Division - Development Services

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Surveying Division

This site provides information of interest relating to activities and information in the office of the Ada County Surveyor, Surveying Division, a division of Ada County Development Services, in the Administration Building located at 200 W. Front Street, Boise, Idaho 83702. The County Surveyor’s Office is found on the 2nd Floor on the west side (Toward the wall and left down the hall, after you get off the elevator or climb the stairs). The room number is 2125. Our phone number for the department is (208) 287-7900 and the Fax number is (208) 287-7909.

This page is a list of items and information available on this site. The items may be updated periodically and the last date the information was updated is usually listed at the bottom of the individual pages. The data shown at this site is for informational purposes only. For the official records please check the County Assessor’s or County Recorder’s Office. (This Department shall not be held liable for the accuracy of the information shown on this page.)

Effective March 1, 2018 – The web address for the Corner Perpetuation Filing map has changed!  Please update your desktop links to

Effective January 1, 2015 – A completed and signed Final Plat Review Submittal Form is required for all subdivision and condominium plats submitted to the Ada County Engineering & Surveying Division for final plat review and approval.

The Concurrent Plat Review Process for Subdivision AND Condominium Plats

Check on the status of the plat review from the Ada County Surveyor’s office. As the information is updated, it is immediately available. Use it to check on the progress of a subdivision plat in the County Surveyors review process.