Middlesex County and Somerville City property record for 21 Assembly Square Dr, Somerville, MA 02145
| Property Type | Government / Public Use |
|---|---|
| Lot Size | 0.186 acres (8,112 sqft) |
| Owner | Company Name on Record |
| Last Sale | $4,100,000 (Jun 2008) |
| Flood Zone | Zone X (minimal risk) |
| APN | 101-B-5 |
| Primary APN | 101-B-5 |
|---|---|
| Alternative APNs |
|
| Lot Area | 8,112 sqft (0.186 acres) |
|---|
| Account Number | 99737225 |
|---|---|
| Street Address | 21 ASSEMBLY SQUARE DR |
| City | SOMERVILLE |
| State | MA |
| Zip | 02145 |
| Property Category | Public Works |
| Property Type | Public Works > Government / Public Use |
| Local Zoning Code | CIV |
| Legal Block | B |
| Legal Lot Number | 5 |
| Jurisdiction | SOMERVILLE MA |
| Township / Civil Division | SOMERVILLE |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 350106 |
Source: Middlesex County and Somerville City records, as of October 20, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 93 HIGHLAND AVE, SOMERVILLE, MA 02143-1740 |
| Owner Type | Company |
| Vesting | Government |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 27, 2008 · Amount on Record |
| Deed Sale | Jun 27, 2008 · Amount on Record |
| Deed Book / Page | 51364 / 370 |
| Record Updated | Oct 29, 2026 |
Source: Middlesex County and Somerville City assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| Municipality | Somerville City |
| Unified School District | Somerville School District (PK - 12) |
| Year | Assessed Value |
|---|---|
| 2026 | $983,800 (+5.01%) Land $983,800 |
| 2025 | $936,900 (-) Land $936,900 |
| 2024 | $936,900 Land $936,900 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
Source: FEMA National Flood Hazard Layer, effective September 10, 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 |
| Nearby Flood Policies | 2 in force |
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.
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 | SOMERVILLE WATER DEPT. (MWRA) serves 81,045 people · EPA ID MA3274000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Oct 2025 |
| Lead | 4 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Lead service line replacement currently in violation since Nov 2019 |
| 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.
Source: FCC Broadband Data Collection, based on 556 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 |
| Astound Broadband Cable | 1,500 / 50 |
| Verizon Fixed Wireless · Fiber in parts of the area | 1,000 / 75 |
| Netafy Fixed Wireless | 641 / 143 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T, Starry.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures