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Single Family ResidenceResidential
$685,664$346 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $260,000 on Dec 16, 2010

12140 OBSERVATION DR

GRAND TERRACE, CA 92313
3
Beds
2
Baths
1,980 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.
0.34 ac
Lot SizeThe size of the land the home sits on, from county records.
1983
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$686K
$661K low$711K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$260,000 · Dec 16, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,232 (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.$339,769 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$101,930
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$237,839

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.Modern
CountySAN BERNARDINO
Lot (acres)The size of the land the home sits on, from county records.0.34
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.Tile
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 115 ft²Porch · 405 ft²

Transaction History(7)

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.

M
Terrace Hills Middle SchoolD
Middle · Grades 7–8 · 0.5 mi
E
Terrace View Elementary SchoolB
Elementary · Grades KG–6 · 0.7 mi
H
Grand Terrace High SchoolC
High · Grades 9–12 · 1.7 mi

District: Colton Joint Unified School District

Neighborhood · ZIP 92313These 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.72
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 100.669

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.8%
PopulationHow many people live in this area.13,147
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,730 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$87,205
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,347
Average tempThe average temperature here across a full year.64°F
Annual precipHow much rain and melted snow falls here in a typical year.12 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.68%

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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

12140 Observation 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 more than 86% of homes in Grand Terrace 92313
  • Bigger than 79% of homes in Grand Terrace 92313
  • Has a bigger lot than 85% of homes in Grand Terrace 92313
  • Newer than 75% of homes in Grand Terrace 92313

What homes are worth in Grand Terrace 92313

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

This home
$387K$823K

This home is worth more than 86% of homes in Grand Terrace 92313.

How it measures up in Grand Terrace 92313

The dot is this home. The mark in the middle is the typical home in Grand Terrace 92313.

Estimated value$685,664
CheaperTypical $567,558Pricier

Pricier than 86% of homes nearby

Price per ft²$346
CheaperTypical $348Pricier

Pricier than 50% of homes nearby

Living area1,980 ft²
SmallerTypical 1,581 ft²Bigger

Bigger than 79% of homes nearby

Lot size0.34 ac
SmallerTypical 0.19 acBigger

Bigger than 85% of homes nearby

Year built1983
OlderTypical 1978Newer

Newer than 75% of homes nearby

How 12140 Observation Dr ranks against every home in each area.
MeasureThis homeGrand Terrace 92313San Bernardino County
Estimated valuepricier than$685,66486% of homes74% of homes
Price per ft²pricier than$34650% of homes53% of homes
Living areabigger than1,980 ft²79% of homes70% of homes
Lot sizebigger than0.34 ac85% of homes76% of homes
Year builtnewer than198375% of homes48% of homes

About 12140 Observation Dr

How much is 12140 Observation Dr, Grand Terrace, CA worth?

The TopHap Estimate for 12140 Observation Dr, Grand Terrace, CA is $685,664 as of Sep 24, 2026. The likely range is $660,508 to $710,820. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12140 Observation Dr, Grand Terrace, CA last sell?

12140 Observation Dr, Grand Terrace, CA last sold on Dec 16, 2010 for $260,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 12140 Observation Dr, Grand Terrace, CA?

12140 Observation Dr, Grand Terrace, CA has 3 bedrooms, 2 bathrooms, 1,980 square feet of living space and a 0.34-acre lot.

When was 12140 Observation Dr, Grand Terrace, CA built?

12140 Observation Dr, Grand Terrace, CA was built in 1983, making it 43 years old. It is a modern home. The building has 2 stories.

What schools serve 12140 Observation Dr, Grand Terrace, CA?

12140 Observation Dr, Grand Terrace, CA is assigned to Terrace Hills Middle School (middle), rated D; Terrace View Elementary School (elementary), rated B; Grand Terrace High School (high), rated C. All sit in Colton Joint Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12140 Observation Dr, Grand Terrace, CA compare to other homes in Grand Terrace 92313?

Among the 3,496 homes in Grand Terrace 92313, it is worth more than 86% of them ($685,664 against a typical $567,558), its price per square foot is higher than 50% of them ($346 against a typical $348), it is bigger than 79% of them (1,980 ft² against a typical 1,581 ft²), its lot is bigger than 85% of them (0.34 ac against a typical 0.19 ac) and it is newer than 75% of them (1983 against a typical 1978). Measured against all of San Bernardino County, it is worth more than 74% 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 12140 Observation Dr, Grand Terrace, CA?

The 2025 property tax bill for 12140 Observation Dr, Grand Terrace, CA was $4,232. The county assessed it at $339,769.

More homes on Observation Dr

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