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Single Family ResidenceResidential
$674,438$273 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $426,300 on Jan 22, 2002

621 KNOX ST

HOUSTON, TX 77007
3
Beds
5 / 4
Baths
2,472 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.
2,500 ft²
Lot SizeThe size of the land the home sits on, from county records.
2001
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$674K
$620K low$729K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$426,300 · Jan 22, 2002

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,366 (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.$592,843 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$237,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$355,343
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$563,386
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$592,843

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.7 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.''

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.Townhouse
CountyHARRIS
Lot (acres)The size of the land the home sits on, from county records.0.06
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.Neighborhood
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 164 ft²

Transaction History(2)

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
Memorial Elementary SchoolA
Elementary · Grades EE–5 · 0.3 mi
H
Lamar High SchoolB-
High · Grades 9–12 · 1.9 mi
M
Hogg Middle SchoolA
Middle · Grades 6–8 · 2.6 mi

District: Houston Independent School District

Neighborhood · ZIP 77007These 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.152
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.19

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.44%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.9%
PopulationHow many people live in this area.45,712
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,015 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$143,495
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$174,007
Average tempThe average temperature here across a full year.69°F
Annual precipHow much rain and melted snow falls here in a typical year.51 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

621 Knox St 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 91% of homes in Harris County
  • Costs more per square foot than 91% of homes in Harris County
  • Bigger than 73% of homes in Harris County
  • Has a smaller lot than 94% of homes in Harris County
  • Older than 70% of homes in Houston 77007

What homes are worth in Houston 77007

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

This home
$293K$2.1M

This home is worth more than 76% of homes in Houston 77007.

How it measures up in Houston 77007

The dot is this home. The mark in the middle is the typical home in Houston 77007.

Estimated value$674,438
CheaperTypical $508,733Pricier

Pricier than 76% of homes nearby

Price per ft²$273
CheaperTypical $232Pricier

Pricier than 70% of homes nearby

Living area2,472 ft²
SmallerTypical 2,301 ft²Bigger

Bigger than 64% of homes nearby

Lot size2,500 ft²
SmallerTypical 2,352 ft²Bigger

Bigger than 60% of homes nearby

Year built2001
OlderTypical 2006Newer

Newer than 30% of homes nearby

How 621 Knox St ranks against every home in each area.
MeasureThis homeHouston 77007Harris County
Estimated valuepricier than$674,43876% of homes91% of homes
Price per ft²pricier than$27370% of homes91% of homes
Living areabigger than2,472 ft²64% of homes73% of homes
Lot sizebigger than2,500 ft²60% of homes6% of homes
Year builtnewer than200130% of homes63% of homes

About 621 Knox St

How much is 621 Knox St, Houston, TX worth?

The TopHap Estimate for 621 Knox St, Houston, TX is $674,438 as of Oct 21, 2026. The likely range is $619,798 to $729,078. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 621 Knox St, Houston, TX last sell?

621 Knox St, Houston, TX last sold on Jan 22, 2002 for $426,300, according to the county's recorded deed.

How big is 621 Knox St, Houston, TX?

621 Knox St, Houston, TX has 3 bedrooms, 5 bathrooms, 2,472 square feet of living space and a 0.06-acre lot.

When was 621 Knox St, Houston, TX built?

621 Knox St, Houston, TX was built in 2001, making it 25 years old. It is a townhouse home. The building has 1 story.

What schools serve 621 Knox St, Houston, TX?

621 Knox St, Houston, TX is assigned to Memorial Elementary School (elementary), rated A; Lamar High School (high), rated B-; Hogg Middle School (middle), rated A. All sit in Houston Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 621 Knox St, Houston, TX compare to other homes in Houston 77007?

Among the 14,935 homes in Houston 77007, it is worth more than 76% of them ($674,438 against a typical $508,733), its price per square foot is higher than 70% of them ($273 against a typical $232), it is bigger than 64% of them (2,472 ft² against a typical 2,301 ft²), its lot is bigger than 60% of them (2,500 ft² against a typical 2,352 ft²) and it is newer than 30% of them (2001 against a typical 2006). Measured against all of Harris County, it is worth more than 91% 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 621 Knox St, Houston, TX?

The 2025 property tax bill for 621 Knox St, Houston, TX was $8,366. The county assessed it at $592,843.

More homes on Knox St

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Assigned schools

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