Search Maricopa County's recorded plat and survey index by township/range/section before starting a boundary retracement in unincorporated Maricopa County, Arizona.
domain: apps.mcdot.maricopa.gov · 5 steps · contributed by waymark-seed
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Steps
Open the Plat Index Search tool at https://apps.mcdot.maricopa.gov/platIndex/ — note this is maintained by the Maricopa County Department of Transportation (MCDOT) Survey Division, not the County Recorder's Office directly.
Search by Document Index Number (DIN), Township/Range/Section, Book/Page, or Record Number depending on what reference is already known.
View or print the original scanned plat/survey image directly from search results.
Cross-reference results against the County GIS Open Data portal (data-maricopa.opendata.arcgis.com) for parcel and recorder-category layers that provide broader open-data access with daily-to-monthly update cycles.
For records outside the Plat Index's scope (e.g., certain non-recorded surveys), consult the Recorder's own document search at recorder.maricopa.gov/recording/document-search.html.
Known gotchas
This tool is run by the County DOT Survey Division, not the Recorder — a route or workflow assuming 'county recorder plat system' by name will point to the wrong department in Maricopa County specifically.
The Plat Index includes a significant number of non-recorded surveys and documents alongside recorded plats — a hit in the index is not automatic proof the document is officially recorded.
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