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Single Family ResidenceResidential
$121,004$114 / 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 88How 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

401 KNOB CIR

DENISON, TX 75021
0
Baths
1,065 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
Year BuiltThe year the home was originally built, according to county records.

Valuation

$121K
$107K low$135K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,460 (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.$107,305 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$39,075
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$68,230
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$105,878
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$107,305

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.14 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
CountyGrayson
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.1985
Lot (acres)The size of the land the home sits on, from county records.0.17
HeatingThe type of heating system in the home.None
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 · 171 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
Lamar Elementary SchoolC+
Elementary · Grades PK–4 · 0.4 mi
M
Scott Middle SchoolC
Middle · Grades 7–8 · 0.8 mi
H
Denison High SchoolB
High · Grades 9–12 · 3.7 mi

District: Denison Independent School District

Neighborhood · ZIP 75021These 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.137
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.37

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.10,482
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.170 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$55,250
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$76,407
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.42 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

401 Knob Cir 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 93% of homes in Grayson County
  • Costs less per square foot than 88% of homes in Grayson County
  • Smaller than 85% of homes in Grayson County
  • Has a smaller lot than 78% of homes in Grayson County
  • Older than 78% of homes in Grayson County

What homes are worth in Denison 75021

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

This home
$69K$758K

This home is worth more than 16% of homes in Denison 75021.

How it measures up in Denison 75021

The dot is this home. The mark in the middle is the typical home in Denison 75021.

Estimated value$121,004
CheaperTypical $226,652Pricier

Pricier than 16% of homes nearby

Price per ft²$114
CheaperTypical $161Pricier

Pricier than 22% of homes nearby

Living area1,065 ft²
SmallerTypical 1,436 ft²Bigger

Bigger than 20% of homes nearby

Lot size0.17 ac
SmallerTypical 1 acBigger

Bigger than 25% of homes nearby

Year built1959
OlderTypical 1980Newer

Newer than 28% of homes nearby

How 401 Knob Cir ranks against every home in each area.
MeasureThis homeDenison 75021Grayson County
Estimated valuepricier than$121,00416% of homes7% of homes
Price per ft²pricier than$11422% of homes12% of homes
Living areabigger than1,065 ft²20% of homes15% of homes
Lot sizebigger than0.17 ac25% of homes22% of homes
Year builtnewer than195928% of homes22% of homes

About 401 Knob Cir

How much is 401 Knob Cir, Denison, TX worth?

The TopHap Estimate for 401 Knob Cir, Denison, TX is $121,004 as of Sep 24, 2026. The likely range is $106,648 to $135,360. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 401 Knob Cir, Denison, TX last sell?

401 Knob Cir, Denison, TX last sold on Nov 22, 2006, according to the county's recorded deed.

How big is 401 Knob Cir, Denison, TX?

401 Knob Cir, Denison, TX has 1,065 square feet of living space and a 0.17-acre lot.

When was 401 Knob Cir, Denison, TX built?

401 Knob Cir, Denison, TX was built in 1959, making it 67 years old.

What schools serve 401 Knob Cir, Denison, TX?

401 Knob Cir, Denison, TX is assigned to Lamar Elementary School (elementary), rated C+; Scott Middle School (middle), rated C; Denison High School (high), rated B. All sit in Denison Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 401 Knob Cir, Denison, TX compare to other homes in Denison 75021?

Among the 4,329 homes in Denison 75021, it is worth more than 16% of them ($121,004 against a typical $226,652), its price per square foot is higher than 22% of them ($114 against a typical $161), it is bigger than 20% of them (1,065 ft² against a typical 1,436 ft²), its lot is bigger than 25% of them (0.17 ac against a typical 1 ac) and it is newer than 28% of them (1959 against a typical 1980). Measured against all of Grayson County, it is worth more than 7% 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 401 Knob Cir, Denison, TX?

The 2024 property tax bill for 401 Knob Cir, Denison, TX was $2,460. The county assessed it at $107,305.

More homes on Knob Cir

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Assigned schools

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