COS Water Damage Restoration delivers end-to-end Water Damage Restoration in Sag Harbor — from the emergency call through the final walkthrough, with one certified team, one point of contact, and one transparent price.
Locally based for fast, reliable response.
WRT & ASD certified on every Sag Harbor job.
No surprises — flat rate, in writing.
Your adjuster hears from us, not you.
Four reasons Sag Harbor homeowners and businesses call COS Water Damage Restoration first when water damage strikes — and give us five stars when we're done.
Fully licensed for restoration and reconstruction work in Sag Harbor, NY — credentials available on request before work begins.
Our Sag Harbor-based crews target 60-minute on-site response. We don't route your emergency through a regional call center — local dispatch means faster arrival and better outcome.
Xactimate-based scope of work reviewed with you before any equipment is placed. The estimate you approve is the invoice you receive — no hidden line items, no after-the-fact surprises.
Every Water Damage Restoration job in Sag Harbor carries our written satisfaction guarantee. If the result doesn't meet the documented standard, we return and make it right at zero additional cost.
Our Sag Harbor Water Damage Restoration team handles every phase of recovery in-house: no subcontracting, no coordination gaps, no handoff problems.
Speed at this phase directly determines how much is salvageable. Our Sag Harbor crews don't slow down on the way to your property.
Every affected assembly is documented with instrument readings before drying begins.
Drying isn't complete until the numbers confirm it — not when a certain number of days have passed.
We don't rebuild over hidden mold risk.
Supplement filing for underpaid Sag Harbor claims is part of the service.
One company, start to finish.


Real person, real dispatch. Call +1-844-499-0972 and your Sag Harbor crew is moving before you hang up.
Local crews mean local speed — we know Sag Harbor's roads and we move fast.
A thorough walk-through with moisture instruments and thermal imaging establishes the full scope of loss. You receive a written, itemized Xactimate estimate before any work begins — signed off by you before the first tool is placed.
Written satisfaction guarantee on every Sag Harbor job.



"After a supply line failure soaked our kitchen and part of the living room, COS Water Damage Restoration was at our Sag Harbor home in under an hour. The crew's moisture mapping caught wet wall cavity areas I never would have known about. Five days of drying, a perfectly documented insurance file, and zero mold issues. Exactly what you want from a restoration company."
"I was terrified the hardwood floors in our Sag Harbor home were gone after the flooding. The COS Water Damage Restoration crew brought in mat drying systems and dried them in place — saved us thousands versus replacement. The project manager called every morning with readings. Outstanding."
"Mold discovered during our Sag Harbor renovation led us to COS Water Damage Restoration. The remediation was thorough, the clearance report was accepted by our contractor and insurer on the first submission, and we were back on schedule within the week."
Our Sag Harbor-based crew serves the surrounding area — if you're not sure whether we cover your location, call +1-844-499-0972 for instant confirmation.
Don't let moisture work deeper into your Sag Harbor property's structure. One call starts the entire restoration process.
📞 Call +1-844-499-0972 — Sag Harbor Emergency Response24/7 Live Dispatch · Licensed & Insured · Free On-Site Assessment · Sag Harbor, NY