CondominiumResidential
12 Green St
WATERTOWN, MA 02472
3,937 ft²
Lot SizeThe size of the land the home sits on, from county records.
1830
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Built 18303 units720–808 ft²
$1.5M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$508K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$661
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.
+28.4%vs the Watertown ZIP median sale $/ft² ($515)
Sales Performance
—
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
0
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
0.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
1999200120042005200620102023
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
1999200120042005200620102023
7 arms-length sales on record for this building.
Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
2 bed
3 units$508K · $661/ft²
Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.
$493K–$493K
1 unit
$508K–$508K
1 unit
$511K–$511K
1 unit
Ownership & Financing
Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.100%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.0%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.6.9 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.0%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.53%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$446,164
Median tax billThe middle annual property tax bill among the building's units.$5,055
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0
Recent SalesThe latest recorded arms-length sales in the building, newest first.
Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.
Property Facts
Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyMIDDLESEX
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.Roll Tar & Gravel
HeatingThe type of heating system in the home.Hot Water
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.
MHE
Watertown Middle SchoolB-
Middle · Grades 6–8 · 0.3 mi
Watertown High SchoolC+
High · Grades 9–12 · 0.6 mi
J. R. Lowell Elementary SchoolA-
Elementary · Grades KG–5 · 0.7 mi
District: Watertown School District
Neighborhood · ZIP 02472These 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.112
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.71
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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.35,928
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,689 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,227
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$149,103
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.58%
All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.
Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.
About 12 Green St
How many units are in 12 Green St, Watertown, MA?
12 Green St, Watertown, MA has 3 residential units across built in 1830, according to county assessor records.
What is a unit at 12 Green St, Watertown, MA worth?
The median TopHap Estimate across the 3 units at 12 Green St, Watertown, MA is $508,025. That works out to $661 per square foot. Units run from 720 to 808 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.
Is 12 Green St, Watertown, MA expensive for Watertown?
Units at 12 Green St, Watertown, MA carry a median of $661 per square foot, 28% above the Watertown median of $515 per square foot.
How often do units sell at 12 Green St, Watertown, MA?
0 units at 12 Green St, Watertown, MA sold in the last 12 months, out of 7 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.
Have units at 12 Green St, Watertown, MA appreciated?
Across 4 repeat sales of the same unit, 12 Green St, Watertown, MA returned a median 3.0% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 6.8 years.
More homes on Green St
- 39 Green St$1.2M2 bd · 1 ba · 2,859 ft² · Sold $1.3M · Sep 2026
- 23 Green St # 256 bd · 3 ba · 2,730 ft² · Sold $600K · Sep 2026
- 49 Green St # 514 bd · 2 ba · 2,298 ft² · Sold $925K · Jun 2026
- 36 Green St4 bd · 2 ba · 3,808 ft² · Sold $960K · Nov 2024
- 59 Green St$547K2 bd · 1.5 ba · 1,090 ft² · Sold $550K · Mar 2024
- 27 Green St$1M4 bd · 3 ba · 1,666 ft² · Sold $945K · Mar 2024
- 12 Green St # 1$493K2 bd · 1 ba · 746 ft² · Sold $463K · Aug 2023
- 57 Green St$680K2 bd · 1.5 ba · 1,225 ft² · Sold $590K · Dec 2021
- 64 Green St$761K3 bd · 2.5 ba · 1,290 ft² · Sold $675K · Nov 2021
- 52 Green St$1.1M2 bd · 1.5 ba · 2,066 ft² · Sold $715K · Apr 2019
- 78 Green St # 805 bd · 2 ba · 2,514 ft² · Sold $660K · Mar 2016
- 55 Green St$660K2 bd · 1.5 ba · 1,245 ft² · Sold $425K · Nov 2015
Closest homes
- 12 Green St$493K0 ft · 2 bd · 1 ba · 746 ft² · Sold $463K · Aug 2023
- 12 Green St$511K0 ft · 2 bd · 1 ba · 808 ft² · Sold $270K · Oct 2010
- 14 Green St$796K35 ft · 3 bd · 1.5 ba · 1,265 ft² · Sold Jan 1900
- 8 Green St57 ft · 4 bd · 2 ba · 2,132 ft² · Sold Jan 1900
- 46 Green St47 ft · 4 bd · 2 ba · 1,872 ft² · Sold $145K · Apr 1994
- 218 Main St$1.2M118 ft · 3 bd · 2.5 ba · 2,388 ft² · Sold $927K · Nov 2021
- 222 Main St$931K118 ft · 5 bd · 2.5 ba · 2,333 ft² · Sold $965K · Aug 2025
- 220 Main St$1.3M118 ft · 4 bd · 3.5 ba · 2,021 ft² · Sold $1.1M · Jun 2022
More homes in Watertown 02472
- 134 Mount Auburn St$1.5M3 bd · 2.5 ba · 2,529 ft² · Sold $1.5M · Oct 2026
- 5 Repton Cir$875K3 bd · 2 ba · 1,341 ft² · Sold $737K · Sep 2026
- 68 Howe St4 bd · 2 ba · 3,097 ft² · Sold $350K · Sep 2026
- 130 Mount Auburn St$1.4M3 bd · 3 ba · 2,301 ft² · Sold $1.2M · Sep 2026
- 44 Bennett Rd$757K3 bd · 1 ba · 1,100 ft² · Sold $650K · Sep 2026
- 124 Fayette St6 bd · 3.5 ba · 2,784 ft² · Sold $1.2M · Sep 2026
- 204 School St6 bd · 3 ba · 3,166 ft² · Sold $1.3M · Sep 2026
- 141 Coolidge Ave$495K1 bd · 1 ba · 850 ft² · Sold $530K · Sep 2026
- 10 Stoneleigh Cir$2.3M3 bd · 2.5 ba · 3,089 ft² · Sold $1.3M · Sep 2026
- 264 Lexington St$534K2 bd · 1 ba · 874 ft² · Sold $530K · Sep 2026
- 110 Poplar St$775K3 bd · 1 ba · 1,577 ft² · Sold $813K · Sep 2026
- 25 Piermont St$1.4M3 bd · 1 ba · 1,982 ft² · Sold $1.4M · Sep 2026
Assigned schools
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