The 2026 property tax bill for 237 Walnut St was $12,321, up 8.6% from the year before.
Source: Suffolk County and Chelsea City assessment roll, as of April 14, 2026
Property Jurisdictions
Type
Name
State
Massachusetts
County
Suffolk County
Municipality
Chelsea City
Unified School District
Chelsea School District (PK - 12)
Tax Bill & Assessment History
Year
Tax Bill
Assessed Value
2026
$12,321.00 (+8.63%)
$1,073,300 (+8.92%)Land $139,100Building $934,200
2025
$11,342.00 (+17.46%)
$985,400 (+21.44%)Land $132,500Building $852,900
2024
$9,656.00 (+15.53%)
$811,400 (+20.19%)Land $132,500Building $678,900
2023
$8,358.00
$675,100Land $120,500Building $554,600
Assessed value is set for property tax purposes and is not a market price estimate.
Flood
FEMA maps place 237 Walnut St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective January 21, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
FEMA Flood Zone
Zone X minimal risk
Nearest Special Flood Hazard Area
Zone AE, within 500 ft
Flood Insurance Requirement
Not required lenders may require it
Flood Insurance Cost
Premium on File median of 26 individual policies
Nearby Flood Policies
88 units insured incl. 62 condo units
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire
The area around 237 Walnut St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
Wildfire Risk
Not rated no burnable land within ember reach
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Drinking Water
Source: EPA Safe Drinking Water Information System, as of September 2026
Water System
CHELSEA WATER DEPT. (MWRA) serves 40,787 people · EPA ID MA3057000
Water Source
Purchased surface water from MWRA
Last State Inspection
Apr 2024
Lead
2 ppb (2025) action level 15 ppb
Violations Reported to EPA
Water Quality
None last 10 years
Treatment and Procedure
None last 10 years
Monitoring and Reporting
None last 3 years
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Internet Providers
Source: FCC Broadband Data Collection, based on 1,041 locations within half a mile, as of December 31, 2025
Provider
Max Down / Up (Mbps)
Xfinity Cable · Fiber in parts of the area
2,000 / 2,000
Netafy Fixed Wireless
500 / 150
May also be available: AT&T, Starry, T-Mobile, Verizon.