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Single Family ResidenceResidential
$384,268$177 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

21407 SIERRA LONG DR

RICHMOND, TX 77407
3
Beds
2
Baths
2,175 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.
0.36 ac
Lot SizeThe size of the land the home sits on, from county records.
2008
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

$384K
$372K low$396K high

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$398,578 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$71,604
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$326,974
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$398,578
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$398,578

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.18 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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
CountyFort Bend
Lot (acres)The size of the land the home sits on, from county records.0.36
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 · 190 ft²

Transaction History(3)

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
Adolphus Elementary SchoolA+
Elementary · Grades PK–5 · 2.2 mi
M
Banks Junior High School
Middle · Grades 7–8 · 3.5 mi
H
Tomas High School
High · Grades 9–12 · 3.6 mi

District: Lamar Consolidated Independent School District

Neighborhood · ZIP 77407These 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.69
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.16

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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.7%
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.87,060
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,483 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$106,416
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$131,989
Average tempThe average temperature here across a full year.69°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

Owner Tools

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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

21407 Sierra Long 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.

  • Costs more per square foot than 68% of homes in Richmond 77407
  • Smaller than 68% of homes in Richmond 77407
  • Has a bigger lot than 98% of homes in Richmond 77407
  • Older than 66% of homes in Richmond 77407

What homes are worth in Richmond 77407

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

This home
$274K$978K

This home is worth more than 48% of homes in Richmond 77407.

How it measures up in Richmond 77407

The dot is this home. The mark in the middle is the typical home in Richmond 77407.

Estimated value$384,268
CheaperTypical $393,294Pricier

Pricier than 48% of homes nearby

Price per ft²$177
CheaperTypical $163Pricier

Pricier than 68% of homes nearby

Living area2,175 ft²
SmallerTypical 2,512 ft²Bigger

Bigger than 32% of homes nearby

Lot size0.36 ac
SmallerTypical 0.16 acBigger

Bigger than 98% of homes nearby

Year built2008
OlderTypical 2013Newer

Newer than 34% of homes nearby

How 21407 Sierra Long Dr ranks against every home in each area.
MeasureThis homeRichmond 77407Fort Bend County
Estimated valuepricier than$384,26848% of homes48% of homes
Price per ft²pricier than$17768% of homes65% of homes
Living areabigger than2,175 ft²32% of homes38% of homes
Lot sizebigger than0.36 ac98% of homes90% of homes
Year builtnewer than200834% of homes59% of homes

About 21407 Sierra Long Dr

How much is 21407 Sierra Long Dr, Richmond, TX worth?

The TopHap Estimate for 21407 Sierra Long Dr, Richmond, TX is $384,268 as of Jul 14, 2026. The likely range is $372,182 to $396,354. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21407 Sierra Long Dr, Richmond, TX last sell?

21407 Sierra Long Dr, Richmond, TX last sold on Jun 2, 2021, according to the county's recorded deed.

How big is 21407 Sierra Long Dr, Richmond, TX?

21407 Sierra Long Dr, Richmond, TX has 3 bedrooms, 2 bathrooms, 2,175 square feet of living space and a 0.36-acre lot.

When was 21407 Sierra Long Dr, Richmond, TX built?

21407 Sierra Long Dr, Richmond, TX was built in 2008, making it 18 years old. The building has 1 story.

What schools serve 21407 Sierra Long Dr, Richmond, TX?

21407 Sierra Long Dr, Richmond, TX is assigned to Adolphus Elementary School (elementary), rated A+; Banks Junior High School (middle); Tomas High School (high). All sit in Lamar Consolidated Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21407 Sierra Long Dr, Richmond, TX compare to other homes in Richmond 77407?

Among the 23,861 homes in Richmond 77407, it is worth more than 48% of them ($384,268 against a typical $393,294), its price per square foot is higher than 68% of them ($177 against a typical $163), it is bigger than 32% of them (2,175 ft² against a typical 2,512 ft²), its lot is bigger than 98% of them (0.36 ac against a typical 0.16 ac) and it is newer than 34% of them (2008 against a typical 2013). Measured against all of Fort Bend County, it is worth more than 48% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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