Norfolk County and Dedham Town property record for 858 Washington St, Dedham, MA 02026
| Property Type | Office Building |
|---|---|
| Details | 9 ba · 46,700 sqft · built 1959 |
| Lot Size | 2.08 acres (90,605 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $236,471 (2025) |
| Deeds & Mortgages | May 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | DEDH M:0148 L:0030 |
| Primary APN | DEDH M:0148 L:0030 |
|---|
| Full Baths | 9 Baths |
|---|---|
| Units | 32 Units |
| Stories | 2 Stories |
| Building Area | 46,700 sqft Total Area |
| Gross Area | 64,795 sqft |
| 1st Floor Area | 18,610 sqft |
| Basement Area | 8,960 sqft |
| Unfinished Basement | 8,960 sqft |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1959 |
| Architectural Style | High Rise |
| Exterior Material | Brick |
| Construction Type | Steel Frame |
| Roof Type | Flat |
| Roof Material | Tar & Gravel |
| Lot Area | 90,605 sqft (2.08 acres) |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Street Address | 858 WASHINGTON ST |
|---|---|
| City | DEDHAM |
| State | MA |
| Zip | 02026-6099 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Office Building |
| Local Zoning Code | LM |
| Legal Lot Number | 30 |
| Jurisdiction | DEDHAM MA |
| Township / Civil Division | DEDHAM |
| Census Block Group | 1 |
| Census Block | 1039 |
| Census Tract | 402500 |
858 Washington St, a commercial property, is owned by a company.
Source: Norfolk County and Dedham Town records, as of April 14, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 858 WASHINGTON ST, 309, DEDHAM, MA 02026-6021 |
| Owner Type | Company |
| Vesting | 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 | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DEDHAM MA |
| Property Address | 858 WASHINGTON ST, DEDHAM, MA 02026-6099 |
| Transaction Type | Mortgage |
| Record Updated | Jun 4, 2021 |
| Name | Verified Name |
|---|
| Document Number | 39407-363 |
|---|---|
| Date | May 17, 2021 |
| Book Page | 39407/363 |
| Instrument | 64903 |
| Name | DEDHAM INSTITUTION FOR SAVINGS |
|---|---|
| Type | Funding / Finance Company |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
The 2025 property tax bill for 858 Washington St was $236,471, up 6.5% from the year before.
Source: Norfolk County and Dedham Town assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Norfolk County |
| County Subdivision | Dedham Town |
| Unified School District | Dedham School District (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $236,471.00 (+6.46%) | $9,025,600 (+5.16%) Land $2,999,900 Building $6,025,700 |
| 2024 | $222,131.00 (+3.52%) | $8,583,100 (+6.2%) Land $2,861,300 Building $5,721,800 |
| 2023 | $214,580.00 | $8,082,100 Land $2,601,300 Building $5,480,800 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 858 Washington St in Zone X, an area of minimal flood risk, though there have been 7 flood claims nearby since 1978.
Source: FEMA National Flood Hazard Layer, effective May 26, 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 Policies | 7 in force |
| Nearby Flood Claims | 7 (1978–2018) |
| Claims Outside the SFHA | 2 of 7 |
| Most Recent Claim | Aug 2018 · other causes |
| Claims by Event |
|
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 858 Washington 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 | DEDHAM WESTWOOD WATER DIST. serves 41,630 people · EPA ID MA3073000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Apr 2025 |
| Lead | 2 ppb (2025) action level 15 ppb |
| Water Quality | Total trihalomethanes resolved · Oct 2021 |
|---|---|
| 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.
Source: FCC Broadband Data Collection, based on 215 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
| Verizon Fiber | 980 / 880 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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