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Explainers, methodology deep-dives, and practical guides on Philippine property hazards. Written for the decisions that matter.
130 articles published
Surigao del Norte is one of the most seismically active provinces in the Philippines. Before you buy, check the fault, liquefaction, storm surge, and landslide layers for your specific address.
Tarlac looks like the easiest place in Central Luzon to build: flat, dry most of the year, and cheaper than Pampanga or Bulacan. Here is what a hazard screening actually checks for a Tarlac address, from river flooding to the channels Pinatubo left behind.
Zambales sits in Mt. Pinatubo's shadow, and the rivers that lahar carved in 1991 still carry that sediment today. A guide to flood, debris flow, storm surge, fault, and landslide risk for homebuyers in Olongapo, Subic, Iba, and the Zambales highlands.
Mandaluyong is central and convenient, but the Pasig River, the West Valley Fault, and liquefaction-prone soil are three things to check before you commit.
Caloocan City's two non-contiguous sections carry very different hazard profiles. South Caloocan sits low and flood-prone near Manila Bay; North Caloocan varies by barangay. Here is what to check before you commit.
Valenzuela City sits on a low, flat river plain just north of Metro Manila, and large parts of it flood every rainy season. Here is what the hazard maps show, and what to check before you buy.
A hazard map screens for area-wide risk. A geotechnical survey tests the specific soil under your lot. Here is what each one tells you, when banks require a geotech investigation, and how to use both tools in the right order.
Naga City sits on the Bicol River flood plain and typhoon corridor. Before buying a house or lot in Camarines Sur, check flood zones, landslide risk, and waterways first.
Cagayan Province and Tuguegarao City sit on the Cagayan River in a typhoon-heavy corridor. Here is what homebuyers need to check about flood risk, waterways, and elevation before committing.
Quezon Province is not Quezon City. The province's Pacific coast, river lowlands, and Sierra Madre foothills each carry a different hazard profile. Here is what to check before you buy.
Parañaque sits along Manila Bay and a network of rivers, giving it flood, storm surge, and liquefaction exposure that a dry-season visit will not reveal. Check these hazards before you commit to a purchase.
Tacloban sits at the head of San Pedro Bay. Before buying property here, understand the storm surge, flood, landslide, and fault hazards that shape this city.
Registered with the Bureau of Internal Revenue (BIR). RSN 045RC20220000005083.
© 2026 CheckHazard. Hazard data: UP NOAH Center/DOST, PHIVOLCS/GEM, OpenStreetMap contributors, PSA NAMRIA. CheckHazard does not replace a professional geotechnical or engineering survey.
