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Single Family ResidenceResidential
$9,999,999$439 / 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 95How 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

40 COTTAGE ST

BROOKLINE, MA 02445
6
Beds
15 / 6
Baths
22,757 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.
2.61 ac
Lot SizeThe size of the land the home sits on, from county records.
2009
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
33
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$10M
$10M low$10M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$355,801 (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.$36,048,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,163,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$24,885,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$35,124,500

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
18
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
57
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
92
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
32
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.2013
Lot (acres)The size of the land the home sits on, from county records.2.61
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
HeatingThe type of heating system in the home.Forced Air
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, Basement
PoolWhether the property has a pool, and what kind, such as in-ground.No

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 · 0.5 mi
H
Brookline High SchoolA-
High · Grades 9–12 · 0.8 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

40 Cottage 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 South Brookline
  • Among the lowest price per square foot in South Brookline
  • Among the largest homes in South Brookline
  • Has a bigger lot than 92% of homes in South Brookline
  • Newer than 97% of homes in Brookline 02445

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
$404K$6.3M

This home is worth more than almost all 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$9,999,999
CheaperTypical $1,162,443Pricier

Pricier than almost all homes nearby

Price per ft²$439
CheaperTypical $815Pricier

Cheaper than almost all homes nearby

Living area22,757 ft²
SmallerTypical 1,530 ft²Bigger

Bigger than almost all homes nearby

Lot size2.61 ac
SmallerTypical 0.24 acBigger

Bigger than 84% of homes nearby

Year built2009
OlderTypical 1925Newer

Newer than 97% of homes nearby

How 40 Cottage St ranks against every home in each area.
MeasureThis homeSouth BrooklineBrookline 02445Norfolk County
Estimated valuepricier than$9,999,999almost all homesalmost all homesalmost all homes
Price per ft²pricier than$439almost no homesalmost no homes48% of homes
Living areabigger than22,757 ft²almost all homesalmost all homesalmost all homes
Lot sizebigger than2.61 ac92% of homes84% of homes91% of homes
Year builtnewer than200995% of homes97% of homes93% of homes

About 40 Cottage St

How much is 40 Cottage St, Brookline, MA worth?

The TopHap Estimate for 40 Cottage St, Brookline, MA is $9,999,999 as of Aug 30, 2026. The likely range is $9,999,999 to $9,999,999. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 40 Cottage St, Brookline, MA last sell?

40 Cottage St, Brookline, MA last sold on Mar 11, 2009, according to the county's recorded deed.

How big is 40 Cottage St, Brookline, MA?

40 Cottage St, Brookline, MA has 6 bedrooms, 15 bathrooms, 22,757 square feet of living space and a 2.61-acre lot.

When was 40 Cottage St, Brookline, MA built?

40 Cottage St, Brookline, MA was built in 2009, making it 17 years old. It is a colonial home. The building has 2 stories.

What schools serve 40 Cottage St, Brookline, MA?

40 Cottage St, 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 40 Cottage St, Brookline, MA compare to other homes in Brookline 02445?

Among the 6,408 homes in Brookline 02445, it is worth more than almost all of them ($9,999,999 against a typical $1,162,443), its price per square foot is higher than almost none of them ($439 against a typical $815), it is bigger than almost all of them (22,757 ft² against a typical 1,530 ft²), its lot is bigger than 84% of them (2.61 ac against a typical 0.24 ac) and it is newer than 97% of them (2009 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 40 Cottage St, Brookline, MA?

The 2025 property tax bill for 40 Cottage St, Brookline, MA was $355,801. The county assessed it at $36,048,700.

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