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Single Family ResidenceResidential
$643,927$153 / 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 96How 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

1621 MAMMOTH DR

ALLEN, TX 75002
6
Beds
4
Baths
4,222 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.
2006
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
12
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

$644K
$618K low$670K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,087 (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.$653,051 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$155,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$498,051
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$648,407
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$653,051

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCollin
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)
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 · 215 ft²

Transaction History(4)

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
Chandler Elementary SchoolA
Elementary · Grades KG–6 · 0.3 mi
M
Ford Middle SchoolA
Middle · Grades 7–8 · 1.9 mi
H
Allen High SchoolA
High · Grades 9–12 · 2.9 mi

District: Allen Independent School District

Neighborhood · ZIP 75002These 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.37
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.26

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.97%
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.5.1%
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.88,326
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,239 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$121,302
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$148,629
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.41 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

1621 Mammoth 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 73% of homes in Allen 75002
  • Among the lowest price per square foot in Allen 75002
  • Bigger than 93% of homes in Collin County
  • Newer than 84% of homes in Allen 75002

What homes are worth in Allen 75002

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

This home
$274K$1.8M

This home is worth more than 73% of homes in Allen 75002.

How it measures up in Allen 75002

The dot is this home. The mark in the middle is the typical home in Allen 75002.

Estimated value$643,927
CheaperTypical $484,432Pricier

Pricier than 73% of homes nearby

Price per ft²$153
CheaperTypical $216Pricier

Cheaper than almost all homes nearby

Living area4,222 ft²
SmallerTypical 2,367 ft²Bigger

Bigger than 88% of homes nearby

Year built2006
OlderTypical 1999Newer

Newer than 84% of homes nearby

How 1621 Mammoth Dr ranks against every home in each area.
MeasureThis homeAllen 75002Collin County
Estimated valuepricier than$643,92773% of homes71% of homes
Price per ft²pricier than$153almost no homes5% of homes
Living areabigger than4,222 ft²88% of homes93% of homes
Year builtnewer than200684% of homes58% of homes

About 1621 Mammoth Dr

How much is 1621 Mammoth Dr, Allen, TX worth?

The TopHap Estimate for 1621 Mammoth Dr, Allen, TX is $643,927 as of Sep 24, 2026. The likely range is $618,312 to $669,542. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1621 Mammoth Dr, Allen, TX last sell?

1621 Mammoth Dr, Allen, TX last sold on Jun 8, 2023, according to the county's recorded deed.

How big is 1621 Mammoth Dr, Allen, TX?

1621 Mammoth Dr, Allen, TX has 6 bedrooms, 4 bathrooms and 4,222 square feet of living space.

When was 1621 Mammoth Dr, Allen, TX built?

1621 Mammoth Dr, Allen, TX was built in 2006, making it 20 years old. The building has 2 stories.

What schools serve 1621 Mammoth Dr, Allen, TX?

1621 Mammoth Dr, Allen, TX is assigned to Chandler Elementary School (elementary), rated A; Ford Middle School (middle), rated A; Allen High School (high), rated A. All sit in Allen Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1621 Mammoth Dr, Allen, TX compare to other homes in Allen 75002?

Among the 22,674 homes in Allen 75002, it is worth more than 73% of them ($643,927 against a typical $484,432), its price per square foot is higher than almost none of them ($153 against a typical $216), it is bigger than 88% of them (4,222 ft² against a typical 2,367 ft²) and it is newer than 84% of them (2006 against a typical 1999). Measured against all of Collin County, it is worth more than 71% 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 1621 Mammoth Dr, Allen, TX?

The 2024 property tax bill for 1621 Mammoth Dr, Allen, TX was $10,087. The county assessed it at $653,051.

More homes on Mammoth Dr

Closest homes

More homes in Allen 75002

Assigned schools

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