Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$616,664$544 / 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 87How 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

3649 DECORA CIR

SAN MARCOS, CA 92078
3
Beds
1
Baths
1,133 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
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

$617K
$536K low$697K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,613 (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.$237,194 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$67,790
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$169,404
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$232,544

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.46
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
84
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.
19
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
89
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
CountySAN DIEGO
Lot (acres)The size of the land the home sits on, from county records.0.11
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(2)

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.

E
La Mirada AcademyD+
Elementary · Grades KG–8 · 0.2 mi
H
San Marcos High SchoolB
High · Grades 9–12 · 1.0 mi

District: San Marcos Unified School District

Neighborhood · ZIP 92078These 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.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.196

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.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.49,873
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,847 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$116,554
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$141,833
Average tempThe average temperature here across a full year.62°F
Annual precipHow much rain and melted snow falls here in a typical year.16 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.68%

Owner Tools

Do you own this home?
Claim this home

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

3649 Decora Cir 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 95% of homes in San Marcos 92078
  • Smaller than 92% of homes in San Marcos 92078
  • Has a smaller lot than 97% of homes in Industrial San Marcos
  • Older than 88% of homes in San Marcos 92078

What homes are worth in San Marcos 92078

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

This home
$520K$2.3M

This home is worth more than 5% of homes in San Marcos 92078.

How it measures up in San Marcos 92078

The dot is this home. The mark in the middle is the typical home in San Marcos 92078.

Estimated value$616,664
CheaperTypical $1,071,198Pricier

Pricier than 5% of homes nearby

Price per ft²$544
CheaperTypical $564Pricier

Pricier than 40% of homes nearby

Living area1,133 ft²
SmallerTypical 1,740 ft²Bigger

Bigger than 8% of homes nearby

Lot size0.11 ac
SmallerTypical 0.51 acBigger

Bigger than 5% of homes nearby

Year built1973
OlderTypical 2001Newer

Newer than 12% of homes nearby

How 3649 Decora Cir ranks against every home in each area.
MeasureThis homeIndustrial San MarcosSan Marcos 92078San Diego County
Estimated valuepricier than$616,66436% of homes5% of homes17% of homes
Price per ft²pricier than$54453% of homes40% of homes44% of homes
Living areabigger than1,133 ft²31% of homes8% of homes27% of homes
Lot sizebigger than0.11 ac3% of homes5% of homes9% of homes
Year builtnewer than197329% of homes12% of homes29% of homes

About 3649 Decora Cir

How much is 3649 Decora Cir, San Marcos, CA worth?

The TopHap Estimate for 3649 Decora Cir, San Marcos, CA is $616,664 as of Sep 24, 2026. The likely range is $536,469 to $696,859. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3649 Decora Cir, San Marcos, CA last sell?

3649 Decora Cir, San Marcos, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 3649 Decora Cir, San Marcos, CA?

3649 Decora Cir, San Marcos, CA has 3 bedrooms, 1 bathrooms, 1,133 square feet of living space and a 0.11-acre lot.

When was 3649 Decora Cir, San Marcos, CA built?

3649 Decora Cir, San Marcos, CA was built in 1973, making it 53 years old.

What schools serve 3649 Decora Cir, San Marcos, CA?

3649 Decora Cir, San Marcos, CA is assigned to La Mirada Academy (elementary), rated D+; San Marcos High School (high), rated B. All sit in San Marcos Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3649 Decora Cir, San Marcos, CA compare to other homes in San Marcos 92078?

Among the 16,678 homes in San Marcos 92078, it is worth more than 5% of them ($616,664 against a typical $1,071,198), its price per square foot is higher than 40% of them ($544 against a typical $564), it is bigger than 8% of them (1,133 ft² against a typical 1,740 ft²), its lot is bigger than 5% of them (0.11 ac against a typical 0.51 ac) and it is newer than 12% of them (1973 against a typical 2001). Measured against all of San Diego County, it is worth more than 17% 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 3649 Decora Cir, San Marcos, CA?

The 2025 property tax bill for 3649 Decora Cir, San Marcos, CA was $2,613. The county assessed it at $237,194.

More homes on Decora Cir

Closest homes

More homes in San Marcos 92078

Assigned schools

Explore the area

See this home in context

Open 3649 Decora Cir on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map