Norfolk County and Wellesley Town property record for 55 William St, Wellesley Hills, MA 02481
| Property Type | Office Building |
|---|---|
| Lot Size | 2.39 acres (104,213 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $135,281 (2026) |
| Flood Zone | Zone AE (high risk) |
| APN | WELL M:003 R:003 S |
| Primary APN | WELL M:003 R:003 S |
|---|
| Units | 5 Units |
|---|
| Lot Area | 104,213 sqft (2.39 acres) |
|---|
| Street Address | 55 WILLIAM ST |
|---|---|
| City | WELLESLEY HILLS |
| State | MA |
| Zip | 02481-4003 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Office Building |
| Jurisdiction | WELLESLEY MA |
| Township / Civil Division | WELLESLEY |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 404100 |
55 William St, a commercial property, is owned by a company.
Source: Norfolk County and Wellesley Town records, as of October 20, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 197 CLARENDON ST, BOSTON, MA 02116-5010 |
| Owner Type | Company |
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 | 2 Names on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 55 William St was $135,281, down 30.2% from the year before.
Source: Norfolk County and Wellesley Town assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Norfolk County |
| County Subdivision | Wellesley Town |
| Unified School District | Wellesley School District (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $135,281.00 (-30.17%) | $13,302,000 (-29.41%) Building $13,302,000 |
| 2025 | $193,716.00 (-7.21%) | $18,844,000 (-6.04%) Building $18,844,000 |
| 2024 | $208,773.00 (-20.72%) | $20,055,000 (-12.8%) Building $20,055,000 |
| 2023 | $263,350.00 | $23,000,000 Building $23,000,000 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 55 William St in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.
Source: FEMA National Flood Hazard Layer, effective May 26, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Nearby Flood Policies | 7 in force |
| Nearby Flood Claims | 4 (2013–2021) |
| Claims Outside the SFHA | 4 of 4 |
| Most Recent Claim | Sep 2021 · Tropical Storm Henri |
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 risk around 55 William St is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 96% of Massachusetts |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 | WELLESLEY WATER DIVISION serves 29,550 people · EPA ID MA3317000 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Jun 2025 |
| Lead | 4 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 170 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber | 2,300 / 2,300 |
| Xfinity Cable | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
| T-Mobile Fixed Wireless | 100 / 20 |
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