Middlesex County and Waltham City property record for 820 Beaver St, Waltham, MA 02452
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1.5 ba · 1,664 sqft · built 1930 |
| Lot Size | 0.23 acres (10,014 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $478,000 (May 2010) |
| Tax Bill | $7,552 (2026) |
| Deeds & Mortgages | Apr 2021 Refinance |
| Flood Zone | Zone X (minimal risk) |
| APN | WALT M:042 B:008 L:0002 |
| Primary APN | WALT M:042 B:008 L:0002 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,664 sqft Living Area |
| Gross Area | 2,920 sqft |
| Basement Area | 832 sqft |
| Unfinished Basement | 832 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1930 |
| Architectural Style | Colonial |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 10,014 sqft (0.23 acres) |
| Garage Type | Basement |
| Parking Spaces | 1 Parking Space |
| Heating System | Steam |
|---|---|
| Heating Fuel | Gas |
| Account Number | 9831 |
|---|---|
| Street Address | 820 BEAVER ST |
| City | WALTHAM |
| State | MA |
| Zip | 02452-5649 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | 1 |
| Legal Block | 8 |
| Legal Lot Number | 2 |
| Jurisdiction | WALTHAM MA |
| Township / Civil Division | WALTHAM |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 368902 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 820 BEAVER ST, WALTHAM, MA 02452-5649 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 20, 2010 · Amount on Record |
| Deed Sale | May 20, 2010 · Amount on Record |
| Prior Sale | Nov 7, 2002 · Amount on Record |
| Deed Document Number | 201081237 |
| Deed Book / Page | 54711 / 477 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WALTHAM MA |
| Property Address | 820 BEAVER ST, WALTHAM, MA 02452-5649 |
| Transaction Type | Mortgage |
| Record Updated | Apr 30, 2021 |
| Name | Verified Name |
|---|
| Document Number | 77486-117 |
|---|---|
| Date | Apr 12, 2021 |
| Book Page | 77486/117 |
| Instrument | 81719 |
| Name | GUARANTEED RATE INC |
|---|---|
| Type | Non-Lending Institution |
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount Recorded |
| Term | 181 Months |
| Due | May 1, 2036 |
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 | Assessed Market Value |
|---|---|---|---|
| 2026 | $7,552.00 (+6.08%) | $731,800 (+0.95%) Land $471,400 Building $260,400 | $803,333 (+12.11%) |
| 2025 | $7,119.00 (+4.55%) | $724,900 (+2.63%) Land $438,700 Building $286,200 | $716,585 (-18.24%) |
| 2024 | $6,809.00 (+1.51%) | $706,300 (+8.66%) Land $418,100 Building $288,200 | $876,470 |
| 2023 | $6,708.00 | $650,000 Land $380,100 Building $269,900 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 8 in force |
| Nearby Flood Claims | 34 (1978–2021) |
| Claims Outside the SFHA | 4 of 34 |
| Most Recent Claim | Sep 2021 · Tropical Storm Henri |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 96% of Massachusetts |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 108 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 | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
May also be available: T-Mobile.
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