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Single Family ResidenceResidential
$4,342,758$1,094 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $3,950,000 on Oct 2, 2019

100 WALNUT PL

BROOKLINE, MA 02445
4
Beds
6 / 2
Baths
3,971 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1847
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
13
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$4.3M
$4.1M low$4.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$3,950,000 · Oct 2, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$48,192 (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.$4,882,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,333,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,549,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$5,030,820

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
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.2000
Lot (acres)The size of the land the home sits on, from county records.0.50
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.Asphalt
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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
William H. Lincoln SchoolA
Elementary · Grades KG–8 · 0.4 mi
H
Brookline High SchoolA-
High · Grades 9–12 · 0.6 mi

District: Brookline School District

Neighborhood · ZIP 02445These 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.106
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 100.70

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.24,131
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.9,478 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$145,389
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$198,390
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%

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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

100 Walnut Pl 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 Brookline Village
  • Costs more per square foot than 96% of homes in Norfolk County
  • Bigger than 95% of homes in Brookline Village
  • Has a bigger lot than 65% of homes in Brookline 02445
  • Among the oldest homes in Brookline Village

What homes are worth in Brookline 02445

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

This home
$409K$6.3M

This home is worth more than 94% of homes in Brookline 02445.

How it measures up in Brookline 02445

The dot is this home. The mark in the middle is the typical home in Brookline 02445.

Estimated value$4,342,758
CheaperTypical $1,163,839Pricier

Pricier than 94% of homes nearby

Price per ft²$1094
CheaperTypical $814Pricier

Pricier than 89% of homes nearby

Living area3,971 ft²
SmallerTypical 1,518 ft²Bigger

Bigger than 87% of homes nearby

Lot size0.5 ac
SmallerTypical 0.24 acBigger

Bigger than 65% of homes nearby

Year built1847
OlderTypical 1925Newer

Older than almost all homes nearby

How 100 Walnut Pl ranks against every home in each area.
MeasureThis homeBrookline VillageBrookline 02445Norfolk County
Estimated valuepricier than$4,342,758almost all homes94% of homesalmost all homes
Price per ft²pricier than$109493% of homes89% of homes96% of homes
Living areabigger than3,971 ft²95% of homes87% of homes95% of homes
Lot sizebigger than0.5 ac58% of homes65% of homes63% of homes
Year builtnewer than1847almost no homesalmost no homesalmost no homes

About 100 Walnut Pl

How much is 100 Walnut Pl, Brookline, MA worth?

The TopHap Estimate for 100 Walnut Pl, Brookline, MA is $4,342,758 as of Aug 30, 2026. The likely range is $4,089,675 to $4,595,841. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 100 Walnut Pl, Brookline, MA last sell?

100 Walnut Pl, Brookline, MA last sold on Oct 2, 2019 for $3,950,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 100 Walnut Pl, Brookline, MA?

100 Walnut Pl, Brookline, MA has 4 bedrooms, 6 bathrooms, 3,971 square feet of living space and a 0.50-acre lot.

When was 100 Walnut Pl, Brookline, MA built?

100 Walnut Pl, Brookline, MA was built in 1847, making it 179 years old. The building has 2 stories.

What schools serve 100 Walnut Pl, Brookline, MA?

100 Walnut Pl, Brookline, MA is assigned to William H. Lincoln 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 100 Walnut Pl, Brookline, MA compare to other homes in Brookline 02445?

Among the 6,408 homes in Brookline 02445, it is worth more than 94% of them ($4,342,758 against a typical $1,163,839), its price per square foot is higher than 89% of them ($1094 against a typical $814), it is bigger than 87% of them (3,971 ft² against a typical 1,518 ft²), its lot is bigger than 65% of them (0.5 ac against a typical 0.24 ac) and it is newer than almost none of them (1847 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 100 Walnut Pl, Brookline, MA?

The 2025 property tax bill for 100 Walnut Pl, Brookline, MA was $48,192. The county assessed it at $4,882,700.

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