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CondominiumResidential
$1,250,000$1,263 / 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 90How 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 $10,000 on Jul 20, 2026

2139 CARLMONT DR

BELMONT, CA 94002
2
Beds
2.5
Baths
990 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.
691 ft²
Lot SizeThe size of the land the home sits on, from county records.
2017
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1.3M
$1.1M low$1.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$10,000 · Jul 20, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,245 (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.$768,210 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$137,841
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$630,369
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$753,148
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$923,940

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
CountySAN MATEO
Lot (acres)The size of the land the home sits on, from county records.0.02
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.End Unit

Transaction History(1)

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.

H
Carlmont High SchoolA+
High · Grades 9–12 · 0.5 mi
E
Cipriani Elementary SchoolA
Elementary · Grades KG–5 · 0.8 mi
M
Ralston Middle SchoolA+
Middle · Grades 6–8 · 0.9 mi

District: Belmont-Redwood Shores Elementary School District

Neighborhood · ZIP 94002These 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.91
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.598

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.7.1%
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.27,900
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,367 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$172,695
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$212,627
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.25 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.66%

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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

2139 Carlmont Dr 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.

  • Worth less than 93% of homes in Belmont 94002
  • Costs more per square foot than 90% of homes in Western Hills
  • Smaller than 95% of homes in Western Hills
  • Among the smallest lots in Belmont 94002
  • Among the newest homes in San Mateo County

What homes are worth in Belmont 94002

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

This home
$769K$3.6M

This home is worth more than 7% of homes in Belmont 94002.

How it measures up in Belmont 94002

The dot is this home. The mark in the middle is the typical home in Belmont 94002.

Estimated value$1,250,000
CheaperTypical $2,147,071Pricier

Pricier than 7% of homes nearby

Price per ft²$1263
CheaperTypical $1194Pricier

Pricier than 60% of homes nearby

Living area990 ft²
SmallerTypical 1,800 ft²Bigger

Bigger than 5% of homes nearby

Lot size691 ft²
SmallerTypical 0.16 acBigger

Smaller than almost all homes nearby

Year built2017
OlderTypical 1959Newer

Newer than 98% of homes nearby

How 2139 Carlmont Dr ranks against every home in each area.
MeasureThis homeWestern HillsBelmont 94002San Mateo County
Estimated valuepricier than$1,250,00017% of homes7% of homes39% of homes
Price per ft²pricier than$126390% of homes60% of homes75% of homes
Living areabigger than990 ft²5% of homes5% of homes10% of homes
Lot sizebigger than691 ft²almost no homesalmost no homesalmost no homes
Year builtnewer than201798% of homes98% of homesalmost all homes

About 2139 Carlmont Dr

How much is 2139 Carlmont Dr, Belmont, CA worth?

The TopHap Estimate for 2139 Carlmont Dr, Belmont, CA is $1,250,000 as of Aug 30, 2026. The likely range is $1,119,095 to $1,380,905. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 2139 Carlmont Dr, Belmont, CA last sell?

2139 Carlmont Dr, Belmont, CA last sold on Jul 20, 2026 for $10,000, according to the county's recorded deed.

How big is 2139 Carlmont Dr, Belmont, CA?

2139 Carlmont Dr, Belmont, CA has 2 bedrooms, 2.5 bathrooms, 990 square feet of living space and a 0.02-acre lot.

When was 2139 Carlmont Dr, Belmont, CA built?

2139 Carlmont Dr, Belmont, CA was built in 2017, making it 9 years old. It is a condo/apartment home. The building has 2 stories.

What schools serve 2139 Carlmont Dr, Belmont, CA?

2139 Carlmont Dr, Belmont, CA is assigned to Carlmont High School (high), rated A+; Cipriani Elementary School (elementary), rated A; Ralston Middle School (middle), rated A+. All sit in Belmont-Redwood Shores Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 2139 Carlmont Dr, Belmont, CA compare to other homes in Belmont 94002?

Among the 7,604 homes in Belmont 94002, it is worth more than 7% of them ($1,250,000 against a typical $2,147,071), its price per square foot is higher than 60% of them ($1263 against a typical $1194), it is bigger than 5% of them (990 ft² against a typical 1,800 ft²), its lot is bigger than almost none of them (691 ft² against a typical 0.16 ac) and it is newer than 98% of them (2017 against a typical 1959). Measured against all of San Mateo County, it is worth more than 39% of 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 2139 Carlmont Dr, Belmont, CA?

The 2025 property tax bill for 2139 Carlmont Dr, Belmont, CA was $10,245. The county assessed it at $768,210.

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