U.S. Territories · Guam · October 24, 2026

Guam Property Map: How to Find a Lot Number Free

How to find a Guam property and its lot number free on the official Guam Property map, how Guam land is described, and where legal records are kept.

Guam keeps its land records at the territorial level, and the government publishes a free, territory-wide property map. Whether you're stationed on Guam, have family land there or are looking at buying, this guide explains how to use the map, how Guam land is described and where to go for the legal records.

The official map

The Guam Property map is published by the Bureau of Statistics and Plans (BSP) on the Government of Guam's ArcGIS site. It shows property parcels across the island along with administrative boundaries and development constraints.

Guam Property map (Bureau of Statistics and Plans) ↗

The map opened with no login when we checked on October 24, 2026. The "Sign In" link in ArcGIS is optional.

Step by step

1. Open the map with the button above.
2. Zoom to the area. Use the search or pan to the village you want.
3. Click a parcel to see its attributes, including the lot designation.
4. Turn layers on and off in the layer list. Administrative boundaries show municipalities; development constraint layers can include environmental and hazard information.
5. Switch the basemap to imagery to compare parcels with buildings and roads.

How Guam land is described

Guam's Department of Land Management (DLM) identifies land by municipality and lot. Guam has 19 municipalities (villages), each with a code, and DLM's land records system uses municipality codes running up to M19 (M19 is Tamuning), plus a historical code for Machanao. A lot designation can include tract, block and unit parts.

For example, DLM's guide shows "M05 L5072-1-1" as a search for Lot 5072-1-1 in Dededo (municipality code M05). The hyphenated numbers show how a lot has been subdivided: Lot 5072 was divided, and 5072-1 was divided again into 5072-1-1.

When you note a Guam lot, always record the municipality with the lot number. The same lot number can exist in different municipalities.

Where the legal records are

• Department of Land Management. Records deeds, maps and other land documents, and keeps the land records indices. DLM has online land records tools; check the DLM website for current access.
• Department of Revenue and Taxation. Handles real property tax.
• Chamorro Land Trust Commission. Administers Chamorro Land Trust land, which is leased to native Chamorros under the trust's rules rather than sold on the open market.
• Guam Ancestral Lands Commission. Deals with the return of ancestral lands that were taken for federal use.

Things to know before buying

• Chamorro Land Trust land is different. It's leased under the trust's rules. Make sure a property isn't trust land, or that any transaction follows the trust's rules.
• Military land. A large share of Guam is used by the U.S. military. Parcels next to bases may have restrictions.
• Typhoons and flooding. Check flood and hazard information and build to Guam's standards.
• Survey. The online map is for reference. Licensed land surveyors and DLM's recorded maps define boundaries.
• Hire local professionals. A Guam attorney and title company can search DLM records.

A worked example

Say a relative has left you land described as "Lot 1234-5, Yigo" (an example).

1. Open the Guam Property map and zoom to Yigo.
2. Click parcels until you find Lot 1234-5, or search if the tool allows.
3. Note the parcel's outline and check the imagery for access roads.
4. Ask DLM (or an attorney) for the deed history using the municipality code and lot number.
5. Check property tax status with the Department of Revenue and Taxation.

Common questions

Is the Guam Property map free? Yes. It opened with no login when we checked.

Who keeps legal land records on Guam? The Department of Land Management.

What does M05 mean? The DLM code for the municipality of Dededo.

Can non-Chamorros buy land on Guam? Private land on Guam can generally be bought on the open market; Chamorro Land Trust land is leased under the trust's own rules. Check with a Guam attorney for your situation.

Related guides

• Parcel maps for the U.S. territories
• CNMI land rules and parcel map
• Guam parcel map page

Sources

• Guam Property map opened and checked October 24, 2026.
• Guam Department of Land Management: Land Records History user guide and municipality codes (dlm.guam.gov).