Middlesex County and Waltham City property record for 821 Main St, Waltham, MA 02451
| Property Type | Gas Station |
|---|---|
| Details | 3 bd · 2 ba · 1,288 sqft · built 1990 |
| Lot Size | 0.193 acres (8,394 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $1,550,000 (Aug 2001) |
| Tax Bill | $22,351 (2026) |
| Deeds & Mortgages | Apr 2021 Refinance |
| Flood Zone | Zone X (minimal risk) |
| APN | 72174 |
| Primary APN | 72174 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,288 sqft Total Area |
| Basement Area | 432 sqft |
| Unfinished Basement | 432 sqft |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Conventional |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Steel Frame |
| Foundation Type | Slab (Mat/Raft) |
| Roof Type | Flat |
| Roof Material | Tar & Gravel |
| Lot Area | 8,394 sqft (0.193 acres) |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Account Number | 72174 |
|---|---|
| Street Address | 821 MAIN ST |
| City | WALTHAM |
| State | MA |
| Zip | 02451-8506 |
| Property Category | Commercial |
| Property Type | Commercial > Retail > Gas Station |
| Legal Block | 9 |
| Legal Lot Number | 18 |
| Jurisdiction | WALTHAM MA |
| Township / Civil Division | WALTHAM |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 368300 |
821 Main St, a commercial property, is owned by a company that bought it in August 2001.
Source: Middlesex County and Waltham City records, as of October 20, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 800 SOUTH ST, 500, WALTHAM, MA 02453-1439 |
| 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 | 2 Names on Deed |
|---|---|
| Last Sale | Aug 17, 2001 · Amount on File |
| Deed Sale | Aug 17, 2001 · Amount on File |
| Prior Sale | Apr 22, 1997 · Amount on File |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WALTHAM MA |
| Property Address | 821 MAIN ST, WALTHAM, MA 02451-8506 |
| Transaction Type | Mortgage |
| Record Updated | Apr 23, 2021 |
| Name | Verified Name |
|---|
| Document Number | 77448-568 |
|---|---|
| Date | Apr 7, 2021 |
| Book Page | 77448/568 |
| Instrument | 77904 |
| Name | BANK OF AMERICA NA |
|---|---|
| Type | Bank |
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount on Record |
The 2026 property tax bill for 821 Main St was $22,351, up 5.4% 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 | $22,351.00 (+5.42%) | $1,007,700 (-) Land $303,800 Building $703,900 |
| 2025 | $21,202.00 (+11.75%) | $1,007,700 (+1%) Land $286,400 Building $721,300 |
| 2024 | $18,972.00 (-5.65%) | $916,100 (-) Land $260,400 Building $655,700 |
| 2023 | $20,108.00 | $916,100 Land $236,100 Building $680,000 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 821 Main St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| 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 821 Main 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 504 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 |
| AT&T Fixed Wireless | 100 / 20 |
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