When water has damaged your Darien property, every hour without professional intervention expands the loss. Our IICRC-certified Water Damage Restoration team arrives fast, assesses completely, and restores systematically — from initial extraction through final reconstruction.
Locally based for fast, reliable response.
WRT & ASD certified on every Darien job.
Xactimate estimate reviewed with you before work begins.
Your adjuster hears from us, not you.
Four reasons Darien 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 Darien, WI — credentials available on request before work begins.
Locally staged equipment and crews mean our Darien response time beats out-of-area contractors every time.
We quote in writing before we start. What you approve is what you pay.
Our reputation in Darien is one job at a time. We stand behind every single one.
COS Water Damage Restoration's Water Damage Restoration service in Darien covers the complete recovery process — from the first emergency response through mold prevention, structural drying, and full rebuild.
The moment your call connects, our Darien restoration dispatcher starts building your response. Extraction crews arrive with truck-mounted systems capable of removing high volumes of water rapidly — limiting saturation time and reducing the overall restoration scope.
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.
Antimicrobial treatment is applied to all moisture-exposed structural surfaces as a standard preventive step in every Darien Water Damage Restoration job. Where mold growth is identified, IICRC S520-compliant remediation — with HEPA containment, negative air pressure, and clearance testing — is performed before reconstruction begins.
Our Darien claim coordinators build your documentation file from day one: structured photo evidence, moisture data logs, equipment placement records, and an Xactimate scope of work that matches your carrier's estimating platform. We file, communicate with your adjuster, and follow the claim through to settlement so you don't have to.
One company, start to finish.


Real person, real dispatch. Call +1-844-499-0972 and your Darien crew is moving before you hang up.
Local crews mean local speed — we know Darien'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 Darien job.



"Our Darien business had a roof-to-slab water event on a Thursday night. By Friday morning COS Water Damage Restoration had extracted everything, staged drying equipment, and given me a documented scope I could hand directly to my adjuster. We were operational again the following week. Truly professional."
"I was terrified the hardwood floors in our Darien 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 Darien 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."
COS Water Damage Restoration provides Water Damage Restoration in Darien and surrounding communities throughout WI. Call +1-844-499-0972 to confirm coverage at your specific address.
Water damage in Darien gets worse every hour. Our local crew is on standby and can be at your door in under 60 minutes — call now.
📞 Call +1-844-499-0972 — Darien Emergency Response24/7 Live Dispatch · Licensed & Insured · Free On-Site Assessment · Darien, WI