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Single Family ResidenceResidential
$7,968,272$996 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 88How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $4,090,000 on Dec 19, 2006

1 MASON ST

BROOKLINE, MA 02446
8
Beds
6 / 2
Baths
8,001 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1911
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
16
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$8M
$7M low$8.9M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$4,090,000 · Dec 19, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$69,074 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$6,998,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,286,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$4,712,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$6,790,030

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.11 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountyNORFOLK
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1991
Lot (acres)The size of the land the home sits on, from county records.0.25
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Slate
HeatingThe type of heating system in the home.Steam
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(13)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Amos A. Lawrence SchoolA
Elementary · Grades KG–8 · 0.7 mi
H
Brookline High SchoolA-
High · Grades 9–12 · 1.4 mi

District: Brookline School District

Neighborhood · ZIP 02446These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.144
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.76

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.31,401
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.23,893 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,895
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$169,699
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

Owner Tools

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

1 Mason St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Among the most valuable homes in Coolidge Corner
  • Costs more per square foot than 94% of homes in Norfolk County
  • Among the largest homes in Norfolk County
  • Has a smaller lot than 65% of homes in Norfolk County
  • Older than 87% of homes in Norfolk County

What homes are worth in Brookline 02446

Each bar is how many homes fall in that price range. The marker is this home.

This home
$429K$4.5M

This home is worth more than almost all homes in Brookline 02446.

How it measures up in Brookline 02446

The dot is this home. The mark in the middle is the typical home in Brookline 02446.

Estimated value$7,968,272
CheaperTypical $1,020,905Pricier

Pricier than almost all homes nearby

Price per ft²$996
CheaperTypical $868Pricier

Pricier than 76% of homes nearby

Living area8,001 ft²
SmallerTypical 1,244 ft²Bigger

Bigger than almost all homes nearby

Lot size0.25 ac
SmallerTypical 0.29 acBigger

Bigger than 46% of homes nearby

Year built1911
OlderTypical 1925Newer

Newer than 29% of homes nearby

How 1 Mason St ranks against every home in each area.
MeasureThis homeCoolidge CornerBrookline 02446Norfolk County
Estimated valuepricier than$7,968,272almost all homesalmost all homesalmost all homes
Price per ft²pricier than$99676% of homes76% of homes94% of homes
Living areabigger than8,001 ft²almost all homesalmost all homesalmost all homes
Lot sizebigger than0.25 ac46% of homes46% of homes35% of homes
Year builtnewer than191128% of homes29% of homes13% of homes

About 1 Mason St

How much is 1 Mason St, Brookline, MA worth?

The TopHap Estimate for 1 Mason St, Brookline, MA is $7,968,272 as of Sep 24, 2026. The likely range is $7,038,839 to $8,897,705. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1 Mason St, Brookline, MA last sell?

1 Mason St, Brookline, MA last sold on Dec 19, 2006 for $4,090,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 1 Mason St, Brookline, MA?

1 Mason St, Brookline, MA has 8 bedrooms, 6 bathrooms, 8,001 square feet of living space and a 0.25-acre lot.

When was 1 Mason St, Brookline, MA built?

1 Mason St, Brookline, MA was built in 1911, making it 115 years old. It is a colonial home. The building has 3 stories.

What schools serve 1 Mason St, Brookline, MA?

1 Mason St, Brookline, MA is assigned to Amos A. Lawrence School (elementary), rated A; Brookline High School (high), rated A-. All sit in Brookline School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1 Mason St, Brookline, MA compare to other homes in Brookline 02446?

Among the 7,868 homes in Brookline 02446, it is worth more than almost all of them ($7,968,272 against a typical $1,020,905), its price per square foot is higher than 76% of them ($996 against a typical $868), it is bigger than almost all of them (8,001 ft² against a typical 1,244 ft²), its lot is bigger than 46% of them (0.25 ac against a typical 0.29 ac) and it is newer than 29% of them (1911 against a typical 1925). Measured against all of Norfolk County, it is worth more than almost all homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 1 Mason St, Brookline, MA?

The 2025 property tax bill for 1 Mason St, Brookline, MA was $69,074. The county assessed it at $6,998,400.

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