Suffolk County and Boston City property record for 645 Commonwealth Ave, Boston, MA 02215
| Property Type | Public School (Administration, Campus, Dorms, Instruction) |
|---|---|
| Details | 4,064 sqft · built 1979 |
| Lot Size | 0.472 acres (20,541 sqft) |
| Owner | Company Name on File |
| Tax Bill | $389,895 (2022) |
| Flood Zone | Zone X (minimal risk) |
| APN | CBOS W:05 P:04089 S:001 |
| Primary APN | CBOS W:05 P:04089 S:001 |
|---|
| Stories | 1 Story |
|---|---|
| Building Area | 4,064 sqft Total Area |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 2006 |
| Exterior Material | Glass |
| Construction Type | Brick |
| Lot Area | 20,541 sqft (0.472 acres) |
| Street Address | 645 COMMONWEALTH AVE |
|---|---|
| City | BOSTON |
| State | MA |
| Zip | 02215-1605 |
| Property Category | Public Works |
| Property Type | Public Works > Public School (Administration, Campus, Dorms, Instruction) |
| Local Zoning Code | E |
| Jurisdiction | BOSTON MA |
| Township / Civil Division | BOSTON |
| Census Block Group | 3 |
| Census Block | 3011 |
| Census Tract | 10103 |
645 Commonwealth Ave, a public works property, is owned by a company.
Source: Suffolk County and Boston City records, as of July 20, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 881 COMMONWEALTH AVE, BOSTON, MA 02215-1390 |
| 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 | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
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 |
|---|---|---|
| 2025 | $79,412,468 (-11.22%) Land $13,672,720 Building $65,739,748 | |
| 2024 | $89,450,639 (+23.28%) Land $13,672,720 Building $75,777,919 | |
| 2023 | $72,558,567 Land $13,672,720 Building $58,885,847 | |
| 2022 | $389,895.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 645 Commonwealth Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1998.
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 |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (1998) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jun 1998 · Heavy Rains And Flooding |
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 645 Commonwealth Ave 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 161 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, AT&T, Starry, Verizon.
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