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Explainers, methodology deep-dives, and practical guides on Philippine property hazards. Written for the decisions that matter.
130 articles published
A clean title proves who owns the land and what is annotated against it. It says nothing about whether the ground floods, shakes, or slides. Here is what each property document actually covers, and where hazard screening fits in the paper trail.
Kalibo floods, Boracay is a small island with big drainage limits, and northern Panay sits on a typhoon track. What to check before you buy property in Aklan, and how to screen one exact address.
Flood hazard maps are colour-coded, which makes them look simpler than they are. Here is what the colours mean, why a boundary is not a fence, and the three mistakes buyers make when they read one.
Dumaguete, Bais, Bayawan, Dauin: what to check before you buy in Negros Oriental. Coastal exposure, the 2012 earthquake lesson about slopes, Kanlaon distance, and how to screen one exact address.
Landslide susceptibility is not a prediction that your lot will collapse. It is a rating of what the ground around it can do under heavy rain. Here is how the Low, Medium, and High levels are set, why a flat lot can still be exposed, and what to check before you buy on or below a slope.
Bought or inherited the lot already? A hazard screening still changes your build: floor level, drainage, earthworks, where the house sits, and what your engineer designs for. A practical guide to run before you pay for plans.
PAGASA rainfall warnings tell you how hard it will rain across a whole province. They cannot tell you what that rain does at your address. Here is what yellow, orange, and red actually mean in millimeters, why two houses on the same street can flood differently under the same warning, and how to pair a live weather warning with a permanent hazard profile of your lot.
Aurora faces the Philippine Sea, so for storms crossing from the east it is often the first land they touch. A sample point in Baler falls inside both a high flood zone and a high storm surge zone, though both at their rarest scenarios. Here is what to check on this coast, why the access road matters as much as the lot, and what changes if you are buying for tourism.
On farmland the first question is not whether it floods, but whether the flooding matches the use. Rice expects standing water and alluvial soil is fertile because it floods. The buildings, though, follow house rules. Here is how to screen an agricultural parcel, including erosion, irrigation reliability, and the easement widths that differ from urban land.
Isabela sits in the largest river basin in the country, which means flooding here is frequently not local. Rain falling a province away arrives days later as a rising river. Here is how to separate basin-scale flooding from local rainfall, why Magat Dam releases matter, and what changes if you are buying farmland instead of a house lot.
A High rating is information, not a verdict. It is set by the worst single layer, so the first job is finding out which one, and the second is checking how often that hazard actually arrives. Here are the five steps from result to decision, the four responses available to you, and which professional to call for each kind of driver.
Occidental and Oriental Mindoro face different seas, catch different storms, and fail in different ways. Storm surge dominates both coasts but at different advisory levels, while the steep interior produces flash flooding rather than slow inundation. Here is what to check, especially if you are buying the island remotely, as many Mindoro buyers do.
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.
