Middlesex County and Waltham City property record for 309 River St, Waltham, MA 02453
| Property Type | Religious, Church, Worship (Synagogue, Temple, Parsonage) |
|---|---|
| Details | 2 ba · 11,360 sqft · built 1930 |
| Lot Size | 0.146 acres (6,360 sqft) |
| Owner | Company Name on Record |
| Flood Zone | Zone X (minimal risk) |
| APN | 96639 |
| Primary APN | 96639 |
|---|---|
| Alternative APN |
|
| Full Baths | 2 Baths |
|---|---|
| Half Baths | 4 Half Baths |
| Stories | 1 Story |
| Building Area | 11,360 sqft Total Area |
| Basement Area | 4,544 sqft |
| Unfinished Basement | 1,136 sqft |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1930 |
| Exterior Material | Brick |
| Construction Type | Concrete |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 6,360 sqft (0.146 acres) |
| Heating System | Steam |
|---|---|
| Heating Fuel | Gas |
| Account Number | 96639 |
|---|---|
| Street Address | 309 RIVER ST |
| City | WALTHAM |
| State | MA |
| Zip | 02453 |
| Property Category | Other |
| Property Type | Other > Religious, Church, Worship (Synagogue, Temple, Parsonage) |
| Legal Block | 24 |
| Legal Lot Number | 1A |
| Jurisdiction | WALTHAM MA |
| Township / Civil Division | WALTHAM |
| Census Block Group | 4 |
| Census Block | 4006 |
| Census Tract | 368800 |
Source: Middlesex County and Waltham 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 | 311 RIVER ST, WALTHAM, MA 02453-6056 |
| Owner Type | Company |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
Source: Middlesex County and Waltham City assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| Municipality | Waltham City |
| Unified School District | Waltham School District (PK - 12) |
| Year | Assessed Value |
|---|---|
| 2026 | $1,547,300 (-4.33%) Land $412,300 Building $1,135,000 |
| 2025 | $1,617,400 (-) Land $392,700 Building $1,224,700 |
| 2024 | $1,617,400 Land $392,700 Building $1,224,700 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective September 10, 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 |
Values are read at the parcel center point; 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 | WALTHAM WATER DEPARTMENT serves 65,218 people · EPA ID MA3308000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Jun 2024 |
| Lead | 2 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.
Source: FCC Broadband Data Collection, based on 591 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| Xfinity Cable · Fiber in parts of the area | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
May also be available: AT&T, T-Mobile.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures