Flood risk, local cost data, climate factors, and insurance context for your ZIP code.
Flood Risk
medium-high
Cost Range
$3,200–$17,000
Avg Response
44 min
NFIP
State participates
Yonkers sits on the Hudson River just north of NYC. Saw Mill River flows through the city, historically causing flash flooding in Nepperhan Valley and Ludlow Park. Hurricane Ida (2021) dropped 3+ inches of rain in one hour, causing catastrophic basement flooding throughout Westchester — Yonkers saw hundreds of flooded basements. Dense older housing stock (pre-1940 brick and brownstone) has aging plumbing and inadequate basement waterproofing. Nor'easter storms bring heavy snow loads causing roof damage. Winter freeze events affect older water mains throughout the city.
Flood-prone areas: Nepperhan Valley and Ludlow Park have highest Saw Mill River flood risk. Dunwoodie and Crestwood are higher-elevation with lower flood risk. Southwest Yonkers near the Hudson has riverfront flood exposure.
Extraction & drying cost per square foot by IICRC water category
| Water Category | $/sq ft |
|---|---|
| Category 1 — Clean Burst supply line, clean appliance overflow | $5.44–$13.49 |
| Category 2 — Gray Dishwasher, washing machine, toilet bowl (no feces) | $13.49–$16.33 |
| Category 3 — Black Sewage backup, floodwater, toilet overflow with feces | $19.17–$24.2 |
Estimates exclude reconstruction (drywall, flooring replacement). National benchmarks: Cat 1 $3.75–$4.25, Cat 2 $4.10–$6.50, Cat 3 $7–$7.50/sq ft — adjusted for Yonkers market (6.4–22/sq ft range).
