Suffolk County and Boston City property record for 9 Union St, Charlestown, MA 02129
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 3.5 ba · 2,840 sqft · built 1880 |
| Lot Size | 0.065 acres (2,842 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $19,948 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | CHAR W:02 P:03808 S:000 |
| Primary APN | CHAR W:02 P:03808 S:000 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 3 Stories |
| Building Area | 2,840 sqft Living Area |
| Gross Area | 3,968 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1880 |
|---|---|
| Effective Year Built | Effective 1880 |
| Architectural Style | Other |
| Exterior Material | Brick |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 2,842 sqft (0.065 acres) |
| Parking Spaces | 1 Parking Space |
| Deck Area | Deck Area |
| Heating System | Hot Water |
|---|
| Street Address | 9 UNION ST |
|---|---|
| City | CHARLESTOWN |
| State | MA |
| Zip | 02129-3505 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Jurisdiction | BOSTON MA |
| Township / Civil Division | BOSTON |
| Census Block Group | 2 |
| Census Block | 2019 |
| Census Tract | 40401 |
9 Union St is owned and occupied by an individual.
Source: Suffolk County and Boston City records, as of July 20, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 9 UNION ST, CHARLESTOWN, MA 02129-3505 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 9 Union St was $19,948, down 3.4% from the year before.
Source: Suffolk County and Boston City assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Suffolk County |
| Municipality | Boston City |
| Unified School District | Boston School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $19,948.00 (-3.39%) | $1,722,600 (-9.06%) Land $581,400 Building $1,141,200 | $2,274,870 (+1.53%) |
| 2024 | $20,647.00 (+9.61%) | $1,894,200 (+8%) Land $538,500 Building $1,355,700 | $2,240,670 |
| 2023 | $18,837.00 | $1,753,900 Land $498,600 Building $1,255,300 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 9 Union St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2018.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (2018) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jan 2018 · tidal / storm surge |
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.
The area around 9 Union 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.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | BOSTON WATER AND SEWER COMMISSION (MWRA) serves 675,647 people · EPA ID MA3035000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Mar 2026 |
| Lead | 6 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Lead service line replacement currently in violation since Nov 2020 |
| 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.
Source: FCC Broadband Data Collection, based on 1,310 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 |
| Verizon Fiber · Fixed Wireless in parts of the area | 980 / 880 |
| Netafy Fixed Wireless | 641 / 143 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Starry.
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