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Single Family ResidenceResidential
$635,672$491 / 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 Sep 24, 2026
Last sold for $315,000 on Mar 26, 2010

4121 BLACKTON DR

LA MESA, CA 91941
3
Beds
2
Baths
1,294 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1942
Year BuiltThe year the home was originally built, according to county records.
1
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$636K
$572K low$699K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$315,000 · Mar 26, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,806 (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.$460,846 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$272,061
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$188,785
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$451,811

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.28
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
38
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
14
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
87
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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.Conventional
CountySAN DIEGO
Lot (acres)The size of the land the home sits on, from county records.0.15
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.Composition Shingle
HeatingThe type of heating system in the home.Floor/Wall Furnace
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(5)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(3)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Vista La Mesa AcademyC
Elementary · Grades KG–8 · 0.3 mi
H
Mount Miguel High SchoolC-
High · Grades 9–12 · 2.5 mi

District: Grossmont Union High School District

Neighborhood · ZIP 91941These 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.74
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.210

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.97%
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.8.0%
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.33,794
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,186 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$102,373
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$128,465
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.14 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

4121 Blackton 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 89% of homes in La Mesa 91941
  • Costs less per square foot than 69% of homes in San Diego County
  • Smaller than 80% of homes in La Mesa 91941
  • Has a smaller lot than 87% of homes in La Mesa 91941
  • Older than 97% of homes in San Diego County

What homes are worth in La Mesa 91941

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

This home
$461K$2.1M

This home is worth more than 11% of homes in La Mesa 91941.

How it measures up in La Mesa 91941

The dot is this home. The mark in the middle is the typical home in La Mesa 91941.

Estimated value$635,672
CheaperTypical $993,955Pricier

Pricier than 11% of homes nearby

Price per ft²$491
CheaperTypical $520Pricier

Pricier than 38% of homes nearby

Living area1,294 ft²
SmallerTypical 1,934 ft²Bigger

Bigger than 20% of homes nearby

Lot size0.15 ac
SmallerTypical 0.3 acBigger

Bigger than 13% of homes nearby

Year built1942
OlderTypical 1964Newer

Newer than 6% of homes nearby

How 4121 Blackton Dr ranks against every home in each area.
MeasureThis homeLa Mesa 91941San Diego County
Estimated valuepricier than$635,67211% of homes19% of homes
Price per ft²pricier than$49138% of homes31% of homes
Living areabigger than1,294 ft²20% of homes36% of homes
Lot sizebigger than0.15 ac13% of homes26% of homes
Year builtnewer than19426% of homes3% of homes

About 4121 Blackton Dr

How much is 4121 Blackton Dr, La Mesa, CA worth?

The TopHap Estimate for 4121 Blackton Dr, La Mesa, CA is $635,672 as of Sep 24, 2026. The likely range is $572,269 to $699,075. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4121 Blackton Dr, La Mesa, CA last sell?

4121 Blackton Dr, La Mesa, CA last sold on Mar 26, 2010 for $315,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 4121 Blackton Dr, La Mesa, CA?

4121 Blackton Dr, La Mesa, CA has 3 bedrooms, 2 bathrooms, 1,294 square feet of living space and a 0.15-acre lot.

When was 4121 Blackton Dr, La Mesa, CA built?

4121 Blackton Dr, La Mesa, CA was built in 1942, making it 84 years old. It is a conventional home. The building has 1 story.

What schools serve 4121 Blackton Dr, La Mesa, CA?

4121 Blackton Dr, La Mesa, CA is assigned to Vista La Mesa Academy (elementary), rated C; Mount Miguel High School (high), rated C-. All sit in Grossmont Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4121 Blackton Dr, La Mesa, CA compare to other homes in La Mesa 91941?

Among the 9,726 homes in La Mesa 91941, it is worth more than 11% of them ($635,672 against a typical $993,955), its price per square foot is higher than 38% of them ($491 against a typical $520), it is bigger than 20% of them (1,294 ft² against a typical 1,934 ft²), its lot is bigger than 13% of them (0.15 ac against a typical 0.3 ac) and it is newer than 6% of them (1942 against a typical 1964). Measured against all of San Diego County, it is worth more than 19% 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 4121 Blackton Dr, La Mesa, CA?

The 2025 property tax bill for 4121 Blackton Dr, La Mesa, CA was $6,806. The county assessed it at $460,846.

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