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Single Family ResidenceResidential
$725,333$270 / 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

1801 KNOLL ST

HOUSTON, TX 77080
2
Beds
1
Baths
2,683 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.
0.46 ac
Lot SizeThe size of the land the home sits on, from county records.
1952
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$725K
$693K low$757K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,383 (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.$604,227 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$400,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$204,227
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$596,989
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$604,227

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.''

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
CountyHARRIS
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.1995
Lot (acres)The size of the land the home sits on, from county records.0.46
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Spring Branch Elementary SchoolC
Elementary · Grades KG–5 · 0.3 mi
M
Spring Woods Middle SchoolD-
Middle · Grades 6–8 · 1.5 mi
H
Northbrook High SchoolD-
High · Grades 9–12 · 1.5 mi

District: Spring Branch Independent School District

Neighborhood · ZIP 77080These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.23

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.20%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.48,530
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,567 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$59,917
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$82,902
Average tempThe average temperature here across a full year.69°F
Annual precipHow much rain and melted snow falls here in a typical year.50 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

1801 Knoll 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 97% of homes in Houston 77080
  • Costs more per square foot than 92% of homes in Houston 77080
  • Bigger than 92% of homes in Houston 77080
  • Has a bigger lot than 91% of homes in Houston 77080
  • Older than 96% of homes in Spring Branch Central

What homes are worth in Houston 77080

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

This home
$121K$809K

This home is worth more than 97% of homes in Houston 77080.

How it measures up in Houston 77080

The dot is this home. The mark in the middle is the typical home in Houston 77080.

Estimated value$725,333
CheaperTypical $358,423Pricier

Pricier than 97% of homes nearby

Price per ft²$270
CheaperTypical $199Pricier

Pricier than 92% of homes nearby

Living area2,683 ft²
SmallerTypical 1,820 ft²Bigger

Bigger than 92% of homes nearby

Lot size0.46 ac
SmallerTypical 0.17 acBigger

Bigger than 91% of homes nearby

Year built1952
OlderTypical 1970Newer

Newer than 4% of homes nearby

How 1801 Knoll St ranks against every home in each area.
MeasureThis homeSpring Branch CentralHouston 77080Harris County
Estimated valuepricier than$725,33391% of homes97% of homes92% of homes
Price per ft²pricier than$27085% of homes92% of homes91% of homes
Living areabigger than2,683 ft²86% of homes92% of homes79% of homes
Lot sizebigger than0.46 ac88% of homes91% of homes91% of homes
Year builtnewer than19524% of homes4% of homes10% of homes

About 1801 Knoll St

How much is 1801 Knoll St, Houston, TX worth?

The TopHap Estimate for 1801 Knoll St, Houston, TX is $725,333 as of Sep 24, 2026. The likely range is $693,288 to $757,378. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1801 Knoll St, Houston, TX last sell?

1801 Knoll St, Houston, TX last sold on Sep 16, 2022, according to the county's recorded deed.

How big is 1801 Knoll St, Houston, TX?

1801 Knoll St, Houston, TX has 2 bedrooms, 1 bathrooms, 2,683 square feet of living space and a 0.46-acre lot.

When was 1801 Knoll St, Houston, TX built?

1801 Knoll St, Houston, TX was built in 1952, making it 74 years old. The building has 1 story.

What schools serve 1801 Knoll St, Houston, TX?

1801 Knoll St, Houston, TX is assigned to Spring Branch Elementary School (elementary), rated C; Spring Woods Middle School (middle), rated D-; Northbrook High School (high), rated D-. All sit in Spring Branch Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1801 Knoll St, Houston, TX compare to other homes in Houston 77080?

Among the 10,900 homes in Houston 77080, it is worth more than 97% of them ($725,333 against a typical $358,423), its price per square foot is higher than 92% of them ($270 against a typical $199), it is bigger than 92% of them (2,683 ft² against a typical 1,820 ft²), its lot is bigger than 91% of them (0.46 ac against a typical 0.17 ac) and it is newer than 4% of them (1952 against a typical 1970). Measured against all of Harris County, it is worth more than 92% 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 1801 Knoll St, Houston, TX?

The 2025 property tax bill for 1801 Knoll St, Houston, TX was $13,383. The county assessed it at $604,227.

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