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Single Family ResidenceResidential
$564,551$280 / 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 89How 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

421 VALLEY GLEN PL

RICHARDSON, TX 75080
0
Baths
2,016 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.
1971
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

$565K
$500K low$629K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,113 (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.$689,439 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$504,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$185,439
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$689,439
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$689,439

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.9 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.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
CountyCollin
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2000
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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 · 32 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
Aldridge Elementary SchoolB+
Elementary · Grades KG–5 · 0.5 mi
M
Wilson Middle SchoolB
Middle · Grades 6–8 · 1.6 mi
H
Plano Senior High SchoolA-
High · Grades 11–12 · 3.0 mi

District: Plano Independent School District

Neighborhood · ZIP 75080These 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.102
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 100.29

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
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.59,499
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,130 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$93,240
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,996
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.62%

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

421 Valley Glen Pl 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 69% of homes in Canyon Creek
  • Costs more per square foot than 92% of homes in Collin County
  • Smaller than 74% of homes in Canyon Creek
  • Older than 96% of homes in Collin County

What homes are worth in Richardson 75080

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

This home
$173K$1.3M

This home is worth more than 64% of homes in Richardson 75080.

How it measures up in Richardson 75080

The dot is this home. The mark in the middle is the typical home in Richardson 75080.

Estimated value$564,551
CheaperTypical $468,945Pricier

Pricier than 64% of homes nearby

Price per ft²$280
CheaperTypical $266Pricier

Pricier than 65% of homes nearby

Living area2,016 ft²
SmallerTypical 1,827 ft²Bigger

Bigger than 59% of homes nearby

Year built1971
OlderTypical 1964Newer

Newer than 75% of homes nearby

How 421 Valley Glen Pl ranks against every home in each area.
MeasureThis homeCanyon CreekRichardson 75080Collin County
Estimated valuepricier than$564,55131% of homes64% of homes61% of homes
Price per ft²pricier than$28045% of homes65% of homes92% of homes
Living areabigger than2,016 ft²26% of homes59% of homes32% of homes
Year builtnewer than197170% of homes75% of homes4% of homes

About 421 Valley Glen Pl

How much is 421 Valley Glen Pl, Richardson, TX worth?

The TopHap Estimate for 421 Valley Glen Pl, Richardson, TX is $564,551 as of Sep 24, 2026. The likely range is $499,994 to $629,108. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Valley Glen Pl, Richardson, TX last sell?

421 Valley Glen Pl, Richardson, TX last sold on Dec 9, 2025, according to the county's recorded deed.

When was 421 Valley Glen Pl, Richardson, TX built?

421 Valley Glen Pl, Richardson, TX was built in 1971, making it 55 years old. The building has 1 story.

What schools serve 421 Valley Glen Pl, Richardson, TX?

421 Valley Glen Pl, Richardson, TX is assigned to Aldridge Elementary School (elementary), rated B+; Wilson Middle School (middle), rated B; Plano Senior High School (high), rated A-. All sit in Plano Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Valley Glen Pl, Richardson, TX compare to other homes in Richardson 75080?

Among the 12,734 homes in Richardson 75080, it is worth more than 64% of them ($564,551 against a typical $468,945), its price per square foot is higher than 65% of them ($280 against a typical $266), it is bigger than 59% of them (2,016 ft² against a typical 1,827 ft²) and it is newer than 75% of them (1971 against a typical 1964). Measured against all of Collin County, it is worth more than 61% 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 421 Valley Glen Pl, Richardson, TX?

The 2024 property tax bill for 421 Valley Glen Pl, Richardson, TX was $9,113. The county assessed it at $689,439.

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