A second home spends most of the year empty. That changes the hazard calculation: nobody moves the furniture, nobody clears the drain, and nobody notices for weeks. Here is what to screen before you buy one.
A rest house is bought for the good days. It spends most of the year empty, which is exactly the thing that changes the risk calculation compared to a house you live in.
In a house you occupy, somebody notices. Somebody moves things off the floor, clears the drain before the rain, spots the leak in week one, and calls someone. A vacation property has none of that.
The same flood does more damage to an empty house. The same blocked drain runs for months. The same small roof failure becomes a rotted ceiling. So the hazards worth screening are not different, but your tolerance for them should be.
Read the usual lines at the exact coordinates: mapped flood exposure, storm surge and elevation if coastal, slope and landslide susceptibility if on rising ground, distance to the nearest mapped waterway, and distance to the nearest mapped active fault.
Vacation properties concentrate in exactly the places where those lines are interesting. Beachfront, riverside, and hillside are the three classic rest-house settings, and each one is a hazard conversation:
Many rest houses pay for part of themselves as short-term rentals. That changes the calculation again, and mostly in the direction of needing to know more, not less.
A guest has no idea where the shut-off valve is, which parking level floods, or that the creek behind the property rises quickly. You do, or you should. Three practical consequences:
The instinct is to find the property first and worry about hazards later, because the property is the exciting part. For a second home this is exactly backwards, and the reason is money.
A rest house is discretionary spending. When it becomes expensive and stressful, people stop using it and it turns into an asset they cannot easily sell, because the next buyer runs the same screening and sees the same thing. That is the pattern described in hazard risk and resale value.
Screening first costs about a minute per candidate property. It lets you compare five locations honestly before you fall in love with one of them, and it means the place you eventually choose is a place you will still enjoy owning after a bad season.
A hazard screening reads public national datasets at your coordinates and tells you what the mapped layers say. It cannot tell you whether anyone will be there when something happens, which for a second home is half the problem. Use it to choose the location wisely, then solve the empty-house part with people and design.
CheckHazard does not replace a professional geotechnical or engineering survey.