Gas explosion: House destroyed, you still own the land, you can rebuild on the land. Even if you move to a new home, you can sell the land for the going rate in the are (which will likely drop because more land is coming on the market, but perhaps not too much).

Nuclear incident: You own irradiated land. Good luck, maybe the government will buy it off you, or the power company if stipulated as some penalty.

One destroys some of your local property, the other destroys the value of all your local property.