Norfolk County and Brookline Town property record for 434 Walnut St, Brookline, MA 02445
| Property Type | Single Family Home |
|---|---|
| Details | 8 bd · 4 ba · 5,362 sqft · built 1900 |
| Lot Size | 0.38 acres (16,557 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $2,300,000 (Mar 2012) |
| Tax Bill | $42,327 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 12224031 |
| Primary APN | 12224031 |
|---|---|
| Alternative APN |
|
| Bedrooms | 8 Beds |
|---|---|
| Full Baths | 4 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 14 Rooms |
| Stories | 3 Stories |
| Building Area | 5,362 sqft Living Area |
| Gross Area | 10,709 sqft |
| Basement Area | 2,478 sqft |
| Unfinished Basement | 1,289 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Other |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 16,557 sqft (0.38 acres) |
| Garage Type | Basement |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Account Number | 12224031 |
|---|---|
| Street Address | 434 WALNUT ST |
| City | BROOKLINE |
| State | MA |
| Zip | 02445-5918 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | S10 |
| Legal Subdivision | COLUMBIAN ST |
| Legal Block | 325 |
| Legal Lot Number | 5 |
| Jurisdiction | BROOKLINE MA |
| Township / Civil Division | BROOKLINE |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 401100 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Brookline Town Green Historic District listed 1980 · 64 contributing resources · NRIS 80000650 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: Norfolk County and Brookline Town records, as of July 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 | 434 WALNUT ST, BROOKLINE, MA 02445-5918 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 9, 2012 · Amount on Record |
| Deed Sale | Mar 9, 2012 · Amount on Record |
| Prior Sale | Oct 21, 1999 · Amount on Record |
| Deed Book / Page | 29740 / 438 |
| Record Updated | Sep 20, 2026 |
Source: Norfolk County and Brookline Town assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Norfolk County |
| County Subdivision | Brookline Town |
| Unified School District | Brookline School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $42,327.00 (+4.73%) | $4,288,500 (+3.67%) Land $1,526,900 Building $2,761,600 | $4,637,995 (+3.82%) |
| 2024 | $40,416.00 (+6.92%) | $4,136,700 (+9.11%) Land $1,468,200 Building $2,668,500 | $4,467,375 |
| 2023 | $37,800.00 | $3,791,400 Land $1,223,700 Building $2,567,700 |
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 May 26, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 9 in force |
| Nearby Flood Claims | 2 (2014) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Dec 2014 · rainfall accumulation |
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 | 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 | BROOKLINE WATER AND SEWER DIVISION serves 63,191 people · EPA ID MA3046000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Apr 2026 |
| 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 160 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Starry, Verizon.
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