Middlesex County and Waltham City property record for 261 River St, Waltham, MA 02453
| Property Type | Apartments (5+ Units) |
|---|---|
| Details | 6 bd · 6.5 ba · 4,425 sqft · built 1960 |
| Lot Size | 0.145 acres (6,303 sqft) |
| Owner | Company Name on File |
| Last Sale | $412,500 (Nov 2013) |
| Tax Bill | $16,097 (2026) |
| Deeds & Mortgages | Feb 2021 Refinance |
| Flood Zone | Zone X (minimal risk) |
| APN | 96336 |
| Primary APN | 96336 |
|---|---|
| Alternative APN |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 6.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 17 Rooms |
| Units | 6 Units |
| Stories | 2 Stories |
| Building Area | 4,425 sqft Living Area |
| Gross Area | 4,564 sqft |
| 1st Floor Area | 988 sqft |
| Basement Area | 1,500 sqft |
| Unfinished Basement | 918 sqft |
| Year Built | Built 1960 |
|---|---|
| Effective Year Built | Effective 1960 |
| Architectural Style | Cape Cod |
| Exterior Material | Brick |
| Construction Type | Frame |
| Roof Type | Flat |
| Roof Material | Other |
| Lot Area | 6,303 sqft (0.145 acres) |
| Garage Type | Attached |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Oil |
| Account Number | 96336 |
|---|---|
| Street Address | 261 RIVER ST |
| City | WALTHAM |
| State | MA |
| Zip | 02453-6061 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Apartments (5+ Units) |
| Legal Block | 29 |
| Legal Lot Number | 12 |
| Jurisdiction | WALTHAM MA |
| Township / Civil Division | WALTHAM |
| Census Block Group | 4 |
| Census Block | 4009 |
| Census Tract | 368800 |
261 River St, a residential property, is owned by a company that bought it in November 2013.
Source: Middlesex County and Waltham City records, as of October 20, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 3 LIDO AVE, BURLINGTON, MA 01803-2222 |
| 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 | Name on Deed |
|---|---|
| Last Sale | Nov 22, 2013 · Amount on File |
| Deed Sale | Nov 22, 2013 · Amount on File |
| Prior Sale | Feb 28, 1997 · Amount on File |
| Deed Book / Page | 62966 / 196 |
| Transfer Doc | 62966-196 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WALTHAM MA |
| Property Address | 261 RIVER ST, WALTHAM, MA 02453-6061 |
| Transaction Type | Mortgage |
| Record Updated | Apr 3, 2026 |
| Name | Verified Name |
|---|
| Document Number | 0076958-78 |
|---|---|
| Date | Feb 12, 2021 |
| Book Page | 76958/78 |
| Instrument | 33241 |
| Name | CAMBRIDGE TRUST CO |
|---|---|
| Type | Bank |
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount on Record |
The 2026 property tax bill for 261 River St was $16,097, up 12.9% from the year before.
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 | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $16,097.00 (+12.94%) | $1,559,800 (+7.47%) Land $611,100 Building $948,700 |
| 2025 | $14,253.00 (+11%) | $1,451,400 (+8.97%) Land $582,000 Building $869,400 |
| 2024 | $12,840.00 (-0.47%) | $1,331,900 (+6.54%) Land $504,000 Building $827,900 |
| 2023 | $12,901.00 | $1,250,100 Land $480,000 Building $770,100 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 261 River St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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.
The area around 261 River 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 | 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.
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