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Single Family ResidenceResidential
$930,548$165 / 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 80How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

18223 THEISS MAIL ROUTE RD

SPRING, TX 77379
5
Beds
6 / 2
Baths
5,655 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.
2.6 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$931K
$743K low$1.1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,291 (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.$1,100,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$156,903
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$943,097
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,100,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,100,000

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
StyleThe architectural style of the home, such as ranch or colonial.Traditional/Old
CountyHARRIS
Lot (acres)The size of the land the home sits on, from county records.2.60
ConstructionThe main material the home's frame and walls are built from.Brick
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.Yes
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.Tennis courtPorch · 101 ft²

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

M
Doerre Intermediate SchoolA
Middle · Grades 6–8 · 0.3 mi
E
Theiss Elementary SchoolA-
Elementary · Grades PK–5 · 0.5 mi
H
Klein High SchoolA-
High · Grades 9–12 · 1.5 mi

District: Klein Independent School District

Neighborhood · ZIP 77379These 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.41
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.20

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.89,405
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,451 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$110,226
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$135,997
Average tempThe average temperature here across a full year.68°F
Annual precipHow much rain and melted snow falls here in a typical year.49 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

18223 Theiss Mail Route Rd 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 98% of homes in Spring 77379
  • Costs more per square foot than 83% of homes in Spring 77379
  • Among the largest homes in Harris County
  • Has a bigger lot than 98% of homes in Spring 77379
  • Older than 65% of homes in Spring 77379

What homes are worth in Spring 77379

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

This home
$214K$983K

This home is worth more than 98% of homes in Spring 77379.

How it measures up in Spring 77379

The dot is this home. The mark in the middle is the typical home in Spring 77379.

Estimated value$930,548
CheaperTypical $374,801Pricier

Pricier than 98% of homes nearby

Price per ft²$165
CheaperTypical $141Pricier

Pricier than 83% of homes nearby

Living area5,655 ft²
SmallerTypical 2,728 ft²Bigger

Bigger than 98% of homes nearby

Lot size2.6 ac
SmallerTypical 0.21 acBigger

Bigger than 98% of homes nearby

Year built1986
OlderTypical 1997Newer

Newer than 35% of homes nearby

How 18223 Theiss Mail Route Rd ranks against every home in each area.
MeasureThis homeSpring 77379Harris County
Estimated valuepricier than$930,54898% of homes95% of homes
Price per ft²pricier than$16583% of homes62% of homes
Living areabigger than5,655 ft²98% of homesalmost all homes
Lot sizebigger than2.6 ac98% of homes96% of homes
Year builtnewer than198635% of homes50% of homes

About 18223 Theiss Mail Route Rd

How much is 18223 Theiss Mail Route Rd, Spring, TX worth?

The TopHap Estimate for 18223 Theiss Mail Route Rd, Spring, TX is $930,548 as of Aug 30, 2026. The likely range is $742,765 to $1,118,331. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18223 Theiss Mail Route Rd, Spring, TX last sell?

18223 Theiss Mail Route Rd, Spring, TX last sold on May 2, 1996, according to the county's recorded deed.

How big is 18223 Theiss Mail Route Rd, Spring, TX?

18223 Theiss Mail Route Rd, Spring, TX has 5 bedrooms, 6 bathrooms, 5,655 square feet of living space and a 2.60-acre lot.

When was 18223 Theiss Mail Route Rd, Spring, TX built?

18223 Theiss Mail Route Rd, Spring, TX was built in 1986, making it 40 years old. It is a traditional/old home. The building has 1 story.

What schools serve 18223 Theiss Mail Route Rd, Spring, TX?

18223 Theiss Mail Route Rd, Spring, TX is assigned to Doerre Intermediate School (middle), rated A; Theiss Elementary School (elementary), rated A-; Klein High School (high), rated A-. All sit in Klein Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18223 Theiss Mail Route Rd, Spring, TX compare to other homes in Spring 77379?

Among the 26,162 homes in Spring 77379, it is worth more than 98% of them ($930,548 against a typical $374,801), its price per square foot is higher than 83% of them ($165 against a typical $141), it is bigger than 98% of them (5,655 ft² against a typical 2,728 ft²), its lot is bigger than 98% of them (2.6 ac against a typical 0.21 ac) and it is newer than 35% of them (1986 against a typical 1997). Measured against all of Harris County, it is worth more than 95% 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 18223 Theiss Mail Route Rd, Spring, TX?

The 2025 property tax bill for 18223 Theiss Mail Route Rd, Spring, TX was $15,291. The county assessed it at $1,100,000.

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