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Single Family ResidenceResidential
$586,929$246 / 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 93How 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

21902 BIG RIVER DR

MAGNOLIA, TX 77355
3 / 1
Baths
2,389 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.
2.04 ac
Lot SizeThe size of the land the home sits on, from county records.
1999
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$587K
$548K low$626K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,495 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$550,792 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$120,697
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$439,803
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$500,720
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$560,500

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.50
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
39
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
97
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
62
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
54
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyMontgomery
Lot (acres)The size of the land the home sits on, from county records.2.04
ConstructionThe main material the home's frame and walls are built from.Stone
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
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.Porch · 453 ft²

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

E
Lyon Elementary SchoolA-
Elementary · Grades PK–4 · 0.4 mi
M
Magnolia Junior High SchoolB
Middle · Grades 7–8 · 4.2 mi
H
Magnolia West High SchoolC+
High · Grades 9–12 · 5.8 mi

District: Magnolia Independent School District

Neighborhood · ZIP 77355These 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.63
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.20

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.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.2%
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.35,817
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.637 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$110,874
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$138,017
Average tempThe average temperature here across a full year.68°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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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

21902 Big River 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 77% of homes in Montgomery County
  • Costs more per square foot than 83% of homes in Montgomery County
  • Bigger than 65% of homes in Magnolia 77355
  • Has a bigger lot than 92% of homes in Montgomery County

What homes are worth in Magnolia 77355

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

This home
$194K$1.4M

This home is worth more than 71% of homes in Magnolia 77355.

How it measures up in Magnolia 77355

The dot is this home. The mark in the middle is the typical home in Magnolia 77355.

Estimated value$586,929
CheaperTypical $405,641Pricier

Pricier than 71% of homes nearby

Price per ft²$246
CheaperTypical $203Pricier

Pricier than 78% of homes nearby

Living area2,389 ft²
SmallerTypical 1,999 ft²Bigger

Bigger than 65% of homes nearby

Lot size2.04 ac
SmallerTypical 0.95 acBigger

Bigger than 80% of homes nearby

Year built1999
OlderTypical 2003Newer

Newer than 37% of homes nearby

How 21902 Big River Dr ranks against every home in each area.
MeasureThis homeMagnolia 77355Montgomery County
Estimated valuepricier than$586,92971% of homes77% of homes
Price per ft²pricier than$24678% of homes83% of homes
Living areabigger than2,389 ft²65% of homes63% of homes
Lot sizebigger than2.04 ac80% of homes92% of homes
Year builtnewer than199937% of homes39% of homes

About 21902 Big River Dr

How much is 21902 Big River Dr, Magnolia, TX worth?

The TopHap Estimate for 21902 Big River Dr, Magnolia, TX is $586,929 as of Aug 30, 2026. The likely range is $548,237 to $625,621. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21902 Big River Dr, Magnolia, TX last sell?

21902 Big River Dr, Magnolia, TX last sold on May 24, 1996, according to the county's recorded deed.

How big is 21902 Big River Dr, Magnolia, TX?

21902 Big River Dr, Magnolia, TX has 3 bathrooms, 2,389 square feet of living space and a 2.04-acre lot.

When was 21902 Big River Dr, Magnolia, TX built?

21902 Big River Dr, Magnolia, TX was built in 1999, making it 27 years old. It is a conventional home. The building has 1 story.

What schools serve 21902 Big River Dr, Magnolia, TX?

21902 Big River Dr, Magnolia, TX is assigned to Lyon Elementary School (elementary), rated A-; Magnolia Junior High School (middle), rated B; Magnolia West High School (high), rated C+. All sit in Magnolia Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21902 Big River Dr, Magnolia, TX compare to other homes in Magnolia 77355?

Among the 12,692 homes in Magnolia 77355, it is worth more than 71% of them ($586,929 against a typical $405,641), its price per square foot is higher than 78% of them ($246 against a typical $203), it is bigger than 65% of them (2,389 ft² against a typical 1,999 ft²), its lot is bigger than 80% of them (2.04 ac against a typical 0.95 ac) and it is newer than 37% of them (1999 against a typical 2003). Measured against all of Montgomery County, it is worth more than 77% 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 21902 Big River Dr, Magnolia, TX?

The 2024 property tax bill for 21902 Big River Dr, Magnolia, TX was $6,495. The county assessed it at $550,792.

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