Transparent by design

How the property screen works

The report intersects one County parcel boundary with current public government GIS layers. It is an early-question finder, not a final development determination.

Screening sequence

An address, APN, or map point is resolved to a Maricopa County parcel.
The parcel polygon is requested from the County Assessor layer.
USGS public-land and terrain records, FEMA, Flood Control District, and Arizona constraint layers are queried concurrently.
Each response is translated into cautious, source-specific language.
The County jurisdiction label is matched to that government's official planning and zoning resources.
Source failures remain visibly different from negative results.

Current sources

Maricopa County Assessor parcel layer

Maricopa County Assessor's Office

Parcel boundary, physical address, area, jurisdiction, zoning field, and valuation context.

Open source service

Protected Areas Database of the United States 4.1

U.S. Geological Survey

Public, tribal, nonprofit, and other protected-land records, including mapped fee interests, easements, designations, and proclamation boundaries.

Open source service

3DEP bare-earth elevation

U.S. Geological Survey

Parcel-wide elevation and modeled percent-rise slope statistics from the current 3DEP elevation service.

Open source service

National Flood Hazard Layer — Flood Hazard Zones

Federal Emergency Management Agency

Effective mapped flood zones and Special Flood Hazard Area flag.

Open source service

FLO-2D model boundaries

Flood Control District of Maricopa County

Published local drainage-model coverage, kept separate from effective FEMA flood zones.

Open source service

Arizona AMA and INA boundaries

Arizona Department of Water Resources

Active Management Area and Irrigation Non-expansion Area context.

Open source service

Land Subsidence

Arizona Department of Water Resources

Published statewide land-subsidence feature boundaries.

Open source service

Mapped Arizona earth fissures

Arizona Geological Survey via ADWR

Mapped fissure traces used for a one-mile proximity screen.

Open source service

Download behavior

A PDF download is generated on the server from a validated parcel number and includes its generation time, report reference, screening language, notices, and source directory. It is a current-source download, not a permanently stored or independently verified report snapshot. Re-running the parcel later can produce different results as government data changes.

What the report cannot establish

It does not establish buildability, title, legal access, water availability, public access, protected status, zoning approval, engineering suitability, survey-grade elevations or slopes, grading feasibility, drainage design, environmental clearance, or insurance requirements. Confirm material decisions with the responsible agencies and qualified professionals.