Where this answer comes from.
Each of these has its own page naming the office that publishes it, how often it updates, and what it cannot answer. Rebuilt from the ParcelOps source directory on September 9, 2026.
DoD Military Installations and Ranges
Where a property sits relative to military installation, range, and training area boundaries, and whether foreign buyer rules attach to the site.
USGS Protected Areas & Public Lands
Nationwide protected-area and public-land ownership, management, access, and conservation context.
Where this stops.
The part a search result will not tell you, and the part worth reading before this answer goes into a decision.
- Noise contours and accident potential zones come from separate installation level studies. Neither is in this data, and neither can be inferred from a distance.
- Some sites exist only as a point with no boundary polygon, so a boundary query cannot see them.
- Nothing operational is in this record. An outline, a name, a service branch, and a status flag is the whole of it, and nothing of that shape should be expected here.
- Coverage is the United States and its territories. Installations elsewhere are not in this data at all.
What people ask next.
Does the foreign investment flag mean a sale needs federal approval?
No. The flag is the Defense Department marking a site whose surroundings matter under the foreign investment rules. Whether a specific transaction falls inside that jurisdiction depends on the parties, the property, the applicable distance rule, and the regulation as it currently reads. It is a trigger to ask counsel the question, and counsel answers it.
Will I hear aircraft from this property?
This data cannot tell you. Noise exposure is modeled per installation in studies that account for flight tracks, aircraft type, and operating hours, and none of that is in a boundary layer. Distance to a fence line is a weak proxy for noise and a worse one for overflight, since flight paths extend well beyond any boundary.
Questions people ask alongside this one.
What census tract is this address in?
Federal program designations are published by census tract, not by address. How to resolve an address to its state, county, tract, and block codes, and why the vintage matters.
Is this property in a flood zone?
A flood zone answer is a letter read off a specific FEMA map panel with an effective date. What each zone means, and why outside a zone is not the same as safe.
Are there wetlands on this property?
The national wetlands inventory is a map layer compiled from imagery, not a jurisdictional determination. What the classification codes mean and where the layer stops.
Is this property in a wildfire risk area?
There is no national wildfire zone the way there is a flood zone. What the modeled risk metrics at a point actually describe, and what decides one house.
Is there a dam near this property?
Listed dams near a point with hazard class and condition rating. Hazard class describes consequence, not likelihood, and proximity to a dam is not inundation risk.
Have earthquakes been recorded near this site?
The published earthquake catalog around a coordinate, with magnitude, depth, and date. Why a quiet catalog is a statement about the instrument record, not about hazard.
The lanes this question belongs to.
A lane page lists every source that kind of work reads, not only the ones behind this question, and states where the whole lane stops.
Run it on a property you already know.
The free plan includes 50 tool calls for the life of the account. They never expire and never refill, and there is no credit card. Ask this question about an address whose answer you can check.