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Single Family ResidenceResidential
$308,994$123 / 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 94How 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

21402 WALDEN GROVE LN

KATY, TX 77450
4
Beds
2.5
Baths
2,502 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
2002
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
9
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

$309K
$289K low$329K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,952 (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.$320,985 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$88,690
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$232,295
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$325,782
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$320,985

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.20 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.''

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.Traditional/Old
CountyHARRIS
Lot (acres)The size of the land the home sits on, from county records.0.14
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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
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.Primary
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 263 ft²

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.

E
Jeanette Hayes Elementary SchoolA
Elementary · Grades PK–5 · 0.2 mi
M
Memorial Parkway Junior High SchoolA
Middle · Grades 6–8 · 0.4 mi
H
James E. Taylor High SchoolA
High · Grades 9–12 · 1.6 mi

District: Katy Independent School District

Neighborhood · ZIP 77450These 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.50
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.24

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.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.1.4%
PopulationHow many people live in this area.76,790
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,299 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,395
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$139,266
Average tempThe average temperature here across a full year.69°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

21402 Walden Grove Ln 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 88% of homes in Kelliwood
  • Costs less per square foot than 97% of homes in Katy 77450
  • Bigger than 73% of homes in Harris County
  • Has a smaller lot than 94% of homes in Katy 77450
  • Newer than 89% of homes in Katy 77450

What homes are worth in Katy 77450

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

This home
$238K$954K

This home is worth more than 28% of homes in Katy 77450.

How it measures up in Katy 77450

The dot is this home. The mark in the middle is the typical home in Katy 77450.

Estimated value$308,994
CheaperTypical $383,970Pricier

Pricier than 28% of homes nearby

Price per ft²$123
CheaperTypical $160Pricier

Pricier than 3% of homes nearby

Living area2,502 ft²
SmallerTypical 2,495 ft²Bigger

Bigger than 50% of homes nearby

Lot size0.14 ac
SmallerTypical 0.19 acBigger

Bigger than 6% of homes nearby

Year built2002
OlderTypical 1993Newer

Newer than 89% of homes nearby

How 21402 Walden Grove Ln ranks against every home in each area.
MeasureThis homeKelliwoodKaty 77450Harris County
Estimated valuepricier than$308,99412% of homes28% of homes57% of homes
Price per ft²pricier than$1236% of homes3% of homes18% of homes
Living areabigger than2,502 ft²38% of homes50% of homes73% of homes
Lot sizebigger than0.14 ac9% of homes6% of homes30% of homes
Year builtnewer than200277% of homes89% of homes65% of homes

About 21402 Walden Grove Ln

How much is 21402 Walden Grove Ln, Katy, TX worth?

The TopHap Estimate for 21402 Walden Grove Ln, Katy, TX is $308,994 as of Sep 24, 2026. The likely range is $289,368 to $328,620. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21402 Walden Grove Ln, Katy, TX last sell?

21402 Walden Grove Ln, Katy, TX last sold on Apr 7, 2026, according to the county's recorded deed.

How big is 21402 Walden Grove Ln, Katy, TX?

21402 Walden Grove Ln, Katy, TX has 4 bedrooms, 2.5 bathrooms, 2,502 square feet of living space and a 0.14-acre lot.

When was 21402 Walden Grove Ln, Katy, TX built?

21402 Walden Grove Ln, Katy, TX was built in 2002, making it 24 years old. It is a traditional/old home. The building has 1 story.

What schools serve 21402 Walden Grove Ln, Katy, TX?

21402 Walden Grove Ln, Katy, TX is assigned to Jeanette Hayes Elementary School (elementary), rated A; Memorial Parkway Junior High School (middle), rated A; James E. Taylor High School (high), rated A. All sit in Katy Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21402 Walden Grove Ln, Katy, TX compare to other homes in Katy 77450?

Among the 20,000 homes in Katy 77450, it is worth more than 28% of them ($308,994 against a typical $383,970), its price per square foot is higher than 3% of them ($123 against a typical $160), it is bigger than 50% of them (2,502 ft² against a typical 2,495 ft²), its lot is bigger than 6% of them (0.14 ac against a typical 0.19 ac) and it is newer than 89% of them (2002 against a typical 1993). Measured against all of Harris County, it is worth more than 57% 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 21402 Walden Grove Ln, Katy, TX?

The 2025 property tax bill for 21402 Walden Grove Ln, Katy, TX was $4,952. The county assessed it at $320,985.

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