Why your home insurance policy might not cover water in the basement

Water in a basement is the claim I denied most often, and it was never because the damage was not real. It was because of which direction the water came from.

Sixteen years adjusting property claims across Idaho and eastern Oregon taught me that homeowners think of water as one thing and policies think of it as at least four.

The one thing that is covered

Sudden and accidental discharge from a plumbing system inside the house. A pipe bursts, a water heater fails, a supply line to the washing machine lets go while you are at work.

That is covered under a standard policy, and it is covered well. The water damage is paid, and usually the cost of tearing out to access the failed pipe, though the failed pipe itself often is not.

If that is what happened to you, you are in good shape.

The ones that are not

Groundwater. Water that rises through the floor or seeps through the foundation wall because the water table came up after a wet spring. Excluded under standard policies, and this is the exclusion that surprises people most because it feels exactly like a flood in the ordinary sense of the word.

Surface water. Rain running across the ground and in through a window well or a door. Also excluded, and legally this counts as flood.

Sewer and drain backup. Water coming back up through a floor drain or a toilet when the municipal line or your own lateral blocks. Excluded under the base policy, and this one is genuinely common.

Slow leaks. A drip that has been going on for weeks or months behind a wall. Excluded as a maintenance issue, on the reasoning that a reasonable homeowner should have noticed. Whether that is fair depends entirely on where the pipe was.

Sump pump failure. The pump stops, the pit overflows. Excluded unless you have specifically added coverage for it.

What you can add

Sewer and water backup coverage is an endorsement, usually cheap, often in the range of a few dozen dollars a year for a modest limit. It typically covers sump pump failure too.

Pay attention to the limit. A lot of policies come with five or ten thousand dollars of backup coverage, and a finished basement with a furnace in it goes well past that. Higher limits are available and the extra premium is small.

Flood is separate entirely. It is not sold as part of a homeowners policy. It comes through the National Flood Insurance Program or a private flood insurer, and it covers exactly the groundwater and surface water situations your homeowners policy excludes.

There is normally a thirty day waiting period before a new flood policy takes effect, which means buying it when the forecast turns bad does not work. It has to be in place before.

How to find out what you have

Get the declarations page, which is the summary at the front of your policy, and read the list of endorsements. Look for anything mentioning water backup, sump overflow or service line.

If you cannot tell, ring your agent and ask two direct questions. Am I covered if the sewer backs up into the basement. Am I covered if the sump pump fails. Make them answer yes or no, and ask for the limit.

Then ask what it costs to add or to raise the limit. In my experience most people are quoted a figure that is smaller than they expected.

If you are already standing in it

Photograph everything before you move anything. Wide shots and close shots, and include something showing the water line on the wall.

Then stop the water and get the water out, because delay turns a water claim into a mould problem and mould coverage is capped hard in most policies. Acting quickly is your obligation under the policy anyway.

Keep every receipt, including for fans, pumps and a hotel if the house is unlivable.

And call it in even if you think it might not be covered. An adjuster looking at the scene can sometimes identify a covered cause you did not consider, a supply line that failed and then flooded the drain, for instance. I found covered causes in claims the homeowner had almost not reported more than once.

What I would do if I owned the house

Put a battery backup on the sump pump. Add the backup endorsement with a limit that reflects what is actually down there. And check where your ground slopes, because a surprising share of what I saw was rainwater running toward a foundation that had settled over twenty years.