Middlesex County and Watertown City property record for 31 Langdon Ave, Watertown, MA 02472
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 1.5 ba · 2,719 sqft · built 1902 |
| Lot Size | 0.142 acres (6,175 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $800,000 (Oct 2020) |
| Tax Bill | $12,244 (2026) |
| Deeds & Mortgages | Oct 2020 Sale & Mortgage Aug 2020 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 54350-29 |
| Primary APN | 54350-29 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 3 Stories |
| Building Area | 2,719 sqft Living Area |
| Gross Area | 4,778 sqft |
| Basement Area | 1,078 sqft |
| Unfinished Basement | 1,078 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1902 |
|---|---|
| Effective Year Built | Effective 1902 |
| Architectural Style | Colonial |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gambrel |
| Roof Material | Asphalt |
| Lot Area | 6,175 sqft (0.142 acres) |
| Parking Spaces | 1 Parking Space |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Account Number | 2003 |
|---|---|
| Street Address | 31 LANGDON AVE |
| City | WATERTOWN |
| State | MA |
| Zip | 02472-1478 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | S-6 |
| Legal Block | 7 |
| Legal Lot Number | 72 |
| Jurisdiction | WATERTOWN MA |
| Township / Civil Division | WATERTOWN TOWN |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 370201 |
31 Langdon Ave is owned and occupied by two individuals who bought it in October 2020.
Source: Middlesex County and Watertown City records, as of October 20, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 31 LANGDON AVE, WATERTOWN, MA 02472-1478 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Oct 29, 2020 | Quit Claim Deed, Transfer · Stand-Alone First Mortgage CAMBRIDGE SAVINGS BANK |
| Aug 19, 2020 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 29, 2020 · Amount on File |
| Deed Sale | Oct 29, 2020 · Amount on File |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | WATERTOWN MA |
| Recording Date | Oct 29, 2020 |
| Property Address | 31 LANGDON AVE, WATERTOWN, MA 02472-1478 |
| Document Number | 76024-90 |
| Book / Page | 76024 / 90 |
| Instrument Date | Oct 29, 2020 |
| Instrument | 199742 |
| Transaction Type | Transfer |
| Record Updated | May 12, 2021 |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Venture |
| Address | 31 LANGDON AVE, WATERTOWN, MA 02472-1478 |
| Document Number | 199743 |
|---|---|
| Date | Oct 29, 2020 |
| Instrument | 199743 |
| Name | CAMBRIDGE SAVINGS BANK |
|---|---|
| Type | Bank |
| Type | Stand-Alone First Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | WATERTOWN MA |
| Recording Date | Aug 19, 2020 |
| Property Address | 31 LANGDON AVE, WATERTOWN, MA 02472-1478 |
| Document Number | 75405-338 |
| Book / Page | 075405 / 000338 |
| Instrument Date | Aug 18, 2020 |
| Instrument | 141566 |
| Transaction Type | Transfer |
| Record Updated | Sep 8, 2020 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Trust |
| Address | 31 LANGDON AVE WATERTOWN MA 024721478, WATERTOWN, MA 02472-1478 |
The 2026 property tax bill for 31 Langdon Ave was $12,244, up 6.7% from the year before.
Source: Middlesex County and Watertown City assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| Municipality | Watertown City |
| Unified School District | Watertown School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $12,244.00 (+6.66%) | $1,003,600 (+2.11%) Land $528,000 Building $475,600 | $1,175,910 (-) |
| 2025 | $11,480.00 (+6.61%) | $982,900 (+6.8%) Land $528,000 Building $454,900 | $1,175,910 (+8.12%) |
| 2024 | $10,768.00 (-6.03%) | $920,300 (+9.07%) Land $511,100 Building $409,200 | $1,087,560 |
| 2023 | $11,459.00 | $843,800 Land $481,900 Building $361,900 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 31 Langdon Ave in Zone X, an area of minimal flood risk.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 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.
The area around 31 Langdon Ave 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 | WATERTOWN DEPARTMENT OF PUBLIC WORKS serves 35,985 people · EPA ID MA3314000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Oct 2025 |
| Lead | 1 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 618 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
| Verizon Fixed Wireless · Fiber in parts of the area | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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