CondominiumResidential
20 Ericsson St
BELMONT, MA 02478
3,737 ft²
Lot SizeThe size of the land the home sits on, from county records.
1908
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Built 19083 units1,116–1,170 ft²
$1.7M
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.
$582K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$521
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.
-8.6%vs the Belmont ZIP median sale $/ft² ($570)
Sales Performance
—
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
0
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
0.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
200520092015201820212022
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
200520092015201820212022
6 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$582K · $521/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.
$539K–$539K
1 unit
$582K–$582K
1 unit
$608K–$608K
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.67%
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.5.3 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.68%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$547,195
Median tax billThe middle annual property tax bill among the building's units.$5,911
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.
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.15 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.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyMIDDLESEX
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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
Winthrop L Chenery Upper Elementary SchoolA-
Middle · Grades 4–6 · 1.1 mi
Belmont High SchoolA+
High · Grades 9–12 · 1.4 mi
Roger E WellingtonA
Elementary · Grades PK–3 · 1.4 mi
District: Belmont School District
Neighborhood · ZIP 02478These 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.55
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 100.74
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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
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.27,636
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,959 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$162,650
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$213,185
Average tempThe average temperature here across a full year.49°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 20 Ericsson St
How many units are in 20 Ericsson St, Belmont, MA?
20 Ericsson St, Belmont, MA has 3 residential units across built in 1908, according to county assessor records.
What is a unit at 20 Ericsson St, Belmont, MA worth?
The median TopHap Estimate across the 3 units at 20 Ericsson St, Belmont, MA is $581,603. That works out to $521 per square foot. Units run from 1,116 to 1,170 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.
Is 20 Ericsson St, Belmont, MA expensive for Belmont?
Units at 20 Ericsson St, Belmont, MA carry a median of $521 per square foot, 9% below the Belmont median of $570 per square foot.
How often do units sell at 20 Ericsson St, Belmont, MA?
0 units at 20 Ericsson St, Belmont, MA sold in the last 12 months, out of 6 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.
Have units at 20 Ericsson St, Belmont, MA appreciated?
Across 3 repeat sales of the same unit, 20 Ericsson St, Belmont, MA returned a median 4.6% 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 3.6 years.
More homes on Ericsson St
- 16 Ericsson St6 bd · 3 ba · 3,485 ft² · Sold $1.4M · Dec 2025
- 20 Ericsson St # 1$608K2 bd · 1 ba · 1,119 ft² · Sold $545K · Jul 2022
- 20 Ericsson St # 2$582K2 bd · 1 ba · 1,116 ft² · Sold $483K · May 2021
- 7 Ericsson St3 bd · 3 ba · 2,242 ft² · Sold $650K · Aug 2013
- 22 Ericsson St5 bd · 3 ba · 3,491 ft² · Sold $495K · Aug 2000
- 6 Ericsson St6 bd · 3 ba · 3,677 ft² · Sold $180K · Nov 1980
- 12 Ericsson St5 bd · 2 ba · 2,715 ft²
- 9 Ericsson St9 bd · 3 ba · 4,305 ft²
Closest homes
- 20 Ericsson St$582K0 ft · 2 bd · 1 ba · 1,116 ft² · Sold $483K · May 2021
- 20 Ericsson St$608K0 ft · 2 bd · 1 ba · 1,119 ft² · Sold $545K · Jul 2022
- 16 Ericsson St41 ft · 6 bd · 3 ba · 3,485 ft² · Sold $1.4M · Dec 2025
- 22 Ericsson St42 ft · 5 bd · 3 ba · 3,491 ft² · Sold $495K · Aug 2000
- 12 Ericsson St86 ft · 5 bd · 2 ba · 2,715 ft²
- 19 Exeter St88 ft · 6 bd · 2 ba · 2,808 ft² · Sold $63K · Dec 1979
- 15 Exeter St97 ft · 5 bd · 3 ba · 3,488 ft² · Sold $598K · Dec 2009
- 6 Ericsson St135 ft · 6 bd · 3 ba · 3,677 ft² · Sold $180K · Nov 1980
More homes in Belmont 02478
- 74 Shaw Rd$2M3 bd · 3.5 ba · 2,288 ft² · Sold $2.1M · Aug 2026
- 45 Simmons Ave$1.1M3 bd · 1.5 ba · 1,508 ft² · Sold $1.2M · Aug 2026
- 21 Jonathan St5 bd · 2 ba · 2,475 ft² · Sold $850K · Aug 2026
- 22 Chilton St$1.1M3 bd · 2.5 ba · 1,290 ft² · Sold $1M · Aug 2026
- 96 Washington St$1.4M3 bd · 1.5 ba · 2,106 ft² · Sold $1.4M · Aug 2026
- 65 S Cottage Rd$1.8M3 bd · 3.5 ba · 2,950 ft² · Sold $1.8M · Aug 2026
- 94 Pine St5 bd · 3 ba · 3,094 ft² · Sold $1.5M · Aug 2026
- 18 Gilmore Rd$1.6M4 bd · 2.5 ba · 2,144 ft² · Sold $1.6M · Aug 2026
- 10 Cumberland Rd$2.3M4 bd · 3.5 ba · 2,602 ft² · Sold $600K · Aug 2026
- 23 Pine St$775K2 bd · 1.5 ba · 1,326 ft² · Sold $775K · Aug 2026
- 38 Slade St$672K2 bd · 1 ba · 1,229 ft² · Sold $700K · Aug 2026
- 113 White St$1M3 bd · 3 ba · 1,820 ft² · Sold $1M · Aug 2026
Assigned schools
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