Disclaimer

What CheckHazard is

A structured screening tool that combines public Philippine hazard datasets with a transparent scoring system to flag exposure at a given address. It's designed to give you a fast, plain-English read on flood risk, fault proximity, landslide susceptibility, storm surge zones, and related factors — the kind of context an engineer would usually charge ₱5,000–₱15,000 to compile from public sources.

What it isn't

• Not an engineering or geotechnical survey. No one visited your site. No borings were drilled. No soil samples were tested. If you're buying a house, building one, or filing a permit, you still need a licensed civil or geotechnical engineer.
• Not an insurance certification. Carriers may use the report as a starting point but won't underwrite from it. A formal underwriting assessment is a separate process.
• Not a real-time alert. CheckHazard is built on published hazard maps; it does not warn you about an active typhoon, earthquake, or flood. For real-time emergencies, call 911 or your local DRRMO, and follow PAGASA, PHIVOLCS, and NDRRMC channels.

Known limits of the underlying data

Source datasets and licenses are listed on the Data Licensing page. The notes below are about how that data behaves in practice.

• Coverage isn't uniform. NOAH hazard polygons exist for most of the country but not every barangay; older municipalities have older studies. The report tells you where data is missing for the address you queried.
• Hazard polygons are modeled, not measured. Flood and storm surge layers come from hydrodynamic models with their own assumptions about return periods, elevation, and rainfall. Reality on a specific lot can diverge from the model.
• Liquefaction is estimated. CheckHazard infers liquefaction susceptibility from elevation, slope, and proximity to waterways — not from soil tests. The report flags the field as estimated and excludes it from the overall risk rating.
• Address geocoding can drift. Google's Geocoding API places a pin at its best guess for the address. Always check the map on the report — if the pin is on the wrong block, the surrounding analysis will be too.
• Hazards change over time. New construction, drainage projects, river straightening, and land use changes can shift exposure between when a hazard map was published and when you read this. Treat older data as one input among many.

How to use the report well

1. Read the address pin on the map. Make sure it's actually your property.
2. Treat the score as a triage signal. "High" is a flag to investigate further, not a verdict.
3. For binding decisions — purchases, permits, insurance — bring the report to a licensed engineer or surveyor and ask them to verify on site.
4. If the report disagrees with what you can see standing on the property, trust your eyes and tell us.

No warranty

CheckHazard is provided "as is." We make no warranties — express or implied — that the data is complete, current, error-free, or fit for a particular purpose. Using the report is at your own risk. The full liability framework is in the Terms of Service.

In an emergency

Don't open a CheckHazard report. Call 911, contact your local DRRMO, and follow PAGASA, PHIVOLCS, and NDRRMC for live guidance.