Guam
Territory-wide maps, data, and agencies.
Guam territory-wide property map
Taxes, deeds, permits and other Guam services on GovDir
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Where to find things
- Guam territory-wide property mapTerritory GIS map · Property lines · Parcel number
Guam's territory-wide map of property lines. Search an address or parcel to see its boundaries.
- Guam land recordsProperty records · Plats
Deeds, mortgages, surveys and maps for the whole island are recorded at the Department of Land Management. There is no separate county recorder.
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- BLM General Land Office RecordsSearch original federal land patents and survey plats by name or legal description to find the first private owner of a parcel.
- Guam GIS data downloadsAerial imagery · GIS data downloads · Elevation · Land cover · Addresses and 911 numbers
Guam's GIS hub from the Bureau of Statistics and Plans: web maps and data for property boundaries with tax and ownership information, roads, addresses, imagery and hazards. The parcel inventory is for information and planning, not a legal boundary.
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- Sanborn Fire Insurance MapsDigitized Sanborn fire insurance maps showing building footprints, materials and uses for American towns and cities, widely used in property history and environmental research.
- USDA NAIP Imagery HubFind and download USDA's leaf-on aerial photography for the contiguous United States. Check coverage and acquisition dates for the area you need.
- USGS National Map ViewerNational base map with elevation, hydrography, imagery, boundaries and PLSS layers.
- State Plane Coordinate System zonesThe official State Plane Coordinate System from the National Geodetic Survey: which zone covers each state and county, zone definitions and conversion tools.
- FEMA National Flood Hazard Layer ViewerInteractive nationwide map of current flood zones, base flood elevations and map panels.
- NCES School District BoundariesNational school district boundary maps and downloadable GIS files, with an address lookup for the district serving a location.
- USGS topoViewBrowse and download every historical USGS topographic map for a location, useful for seeing old roads, buildings and shorelines.
- MRLC NLCD Land Cover ViewerNational land cover map for every year since 1985: forest, cropland, developed, wetland, water and change over time.
- National Land Cover Database (NLCD) DownloadsFilter and download National Land Cover Database products including Annual NLCD land cover for the contiguous United States. Provides downloadable raster products and links to the viewer for spatial selection.
- US Census GeocoderFree service that converts a street address into map coordinates and census geography. No account needed.
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Land Management runs Guam's zoning, land planning, surveys and government land. Start here for a zone change, a lot subdivision or a question about public land.
- FEMA Flood Map Service CenterFlood zones
Official source for flood insurance rate maps. Enter an address to see the current flood zone and download the FIRM panel and letters of map change.
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- FEMA Disaster DeclarationsSearch federal disaster and emergency declarations by state, county and incident to see whether an area was declared and what assistance was authorized.
- FEMA Increased Cost of ComplianceFlood insurance coverage that helps pay to elevate, relocate, demolish or floodproof a substantially damaged building.
- Guam Environmental Protection AgencyWetlands · Lakes and water
Guam's environmental agency: water, wastewater, land clearing, solid waste and the permits that go with them.
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- NRCS wetland determinations and conservation complianceFarm wetland rules for USDA program participants. Before you drain, fill or clear a wet area in a farm field, ask NRCS at your local USDA Service Center for a wetland determination.
- Conservation Reserve Program (CRP) sign-up, USDA Farm Service AgencyHow the Conservation Reserve Program works, which sign-ups are open and what it pays. You enroll land in CRP at your county Farm Service Agency office at the local USDA Service Center.
- NRCS highly erodible land determinationsHow NRCS decides whether a farm field is highly erodible land, which affects USDA program eligibility and conservation plans. Requests go to NRCS at your local USDA Service Center.
- U.S. Drought MonitorWeekly national drought map by county, with historical conditions and state summaries.
- USDA Web Soil SurveySoils
Draw an area on the map to get soil types, drainage, septic suitability, building limitations and farmland ratings.
- USGS map of public and protected landPublic land
National map of federal, state, local and other public and protected land from the U.S. Geological Survey Protected Areas Database (PAD-US).
- Guam licensed land surveyor rosterSurveys and section corners
The official list of land surveyors licensed by the Guam Board of Registration for Professional Engineers, Architects and Land Surveyors. Only a licensed surveyor can mark a legal property line on the ground, so check a surveyor's license before you hire one. Board phone 671-646-3113.
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- NGS survey mark and benchmark mapMap of National Geodetic Survey benchmarks and survey control marks. Zoom to a place, click a mark and open its datasheet with the mark's position, elevation and how to find it on the ground.
- NGS Survey Mark DatasheetsFederal survey mark datasheets and control monument records, searchable by county or coordinates.
- 811 Before You DigRoads
Call 811 or use your state 811 center's website a few business days before any digging, including fence posts, decks, trees and mailboxes. The service is free, and the utilities mark their buried lines with paint or flags. This page lists every state's 811 center.
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- National Pipeline Mapping SystemPublic map viewer of transmission pipelines and operator contacts by county, for excavation planning and emergency response.
- U.S. wildfire risk mapHazards and emergency information
Type a community, county or state to see its wildfire likelihood, risk to homes and exposure, with maps and charts. It shows long-term risk, not current fires, and is a screening tool, not an official hazard designation for a property.
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- U.S. hurricane storm surge risk mapsInteractive map of how deep storm surge flooding could get near the coast in a worst-case hurricane of each category. It does not replace your local hurricane evacuation zone; check the state or county zone lookup for that.
- U.S. landslide mapInteractive national map of known landslides and how susceptible the ground is to landslides. It is a broad screening map, not a site-specific assessment.
- Southern wildfire risk mapOpen the Southern Wildfire Risk Explorer map to see wildfire risk for a place in Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, Puerto Rico and the U.S. Virgin Islands. It is a screening tool for planning, not an official hazard determination.
Other Guam resources
- Guam property taxThe Real Property Tax Division values every parcel on Guam and sends the bill. Look up an assessment, a tax bill or a payment here.