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Sink leak · InsuranceDoes Homeowners Insurance Cover a Sink Leak in Michigan?
A homeowners policy commonly covers sudden and accidental water damage. The carrier decides. A sink leak raises that question because the water often sits inside a closed cabinet for a long time before anyone opens the door.
Why the cabinet door changes the claim
A burst supply line under a sink puts out water fast and the evidence is easy to read: a wet floor the same day, a clear start date, a fixture you can point to.
A slow weep at the same supply line, a loose slip-nut on the P-trap, or a cracked faucet gasket behaves differently. The cabinet door hides it, so the water can run for weeks before a soft cabinet floor or a smell gives it away.
Insurers look at how the water got there, not just how much damage it did. A fast, one-time failure and a drip that ran for weeks are two different questions on the same claim form. Your policy wording and your adjuster decide which one applies to your loss.
What to Document for This Claim
These are the questions a claim file for a sink leak usually has to answer.
| Evidence | Why the adjuster asks for it |
|---|---|
| A dated photo of the cabinet floor and the supply lines, taken before anything is moved | Shows the adjuster the water source and the condition of the cabinet the day you found it |
| A moisture meter reading of the cabinet floor, the subfloor, and the ceiling below if the sink is upstairs | Tells the adjuster how far the water traveled, not just what is visible |
| The date you first noticed the leak and the date you shut the water off | Supports whether the loss reads as sudden or as a leak that ran for a while |
| A plumber's note on what failed and when it likely started | A second, independent read on the timeline that the adjuster can weigh |
What the Clock Looks Like on This Claim
A sink leak claim runs on the same Michigan clock as any other water loss.
- Call your agent or insurer the day you find the leak, not after the cabinet dries out.
- Take reasonable steps to stop the loss from getting worse, such as shutting the valve and clearing the cabinet.
- Get the cabinet floor and subfloor dry within 24 to 48 hours wherever that is safe to do.
- Expect your insurer's written list of what it needs from you within 30 days of your claim.
Sources: DIFS Consumer Counselor FIS-PUB 0216 · DIFS Consumer Counselor FIS-PUB 0216 · EPA, A Brief Guide to Mold, Moisture and Your Home · MCL 500.2006(3), Michigan Legislature
Appraisal, payment interest, and depreciation rules for a sink leak claim are the same as any Michigan water claim. Read the full Michigan claim deadline guide for the full table.
Sink leak Insurance Questions
Is a burst supply line under the sink covered?
Your policy and your insurer decide that. A homeowners policy commonly covers sudden and accidental water damage. Photograph the cabinet floor and the supply line before you clean up, and call your insurer the same day. DIFS tells homeowners to take reasonable action to minimize the loss. DIFS Consumer Counselor FIS-PUB 0216
What if the leak ran for weeks before I found it?
A long-running drip is the kind of loss insurers look at more closely. Get a moisture reading of the cabinet floor and the subfloor right away so there is a record of exactly what is wet, and tell your insurer when you first noticed it.
Do I need to keep the old cabinet or supply line?
Keep anything removed until your insurer or adjuster says you can discard it, and photograph it first. The National Flood Insurance Program tells policyholders to photograph damaged property before removing it, and the same practice protects a non-flood claim too.
Should I call a plumber or a drying company first?
Shut the water off yourself if you can reach the valve safely. A plumber fixes the supply line or the trap. A drying company measures and removes what the water soaked. Both matter for the claim file, and neither replaces the other.
How fast does my insurer have to respond?
Under Michigan law, your insurer must tell you in writing within 30 days what proof of loss it needs. MCL 500.2006(3), Michigan Legislature See the full Michigan claim deadline guide for the full deadline table.
What if the leak came from a dishwasher line next to the sink?
Document which fixture the water came from. A dishwasher supply line, a disposal seal, and a sink faucet are three different sources that can all show up as water under the same cabinet, and the adjuster will ask which one it was.
Water Damage From This Cause Right Now?
Cabinet floors and the subfloor under them need a moisture reading before anyone decides what comes out.